chore(deps): update dependency openfeature to 2.7.0 (#144)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/pr-lint.yml

@@ -4,6 +4,7 @@ on:
     branches:
       - main
   pull_request:
+  merge_group:
 
 permissions:
   # Required: allow read access to the content for analysis.

.github/workflows/pr-test.yml

@@ -44,3 +44,22 @@ jobs:
             git diff
             exit 1
           fi
+
+  integration-tests:
+    name: 'Generator Integration Tests'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'go.mod'
+
+      - name: Run all integration tests with Dagger
+        uses: dagger/dagger-for-github@b81317a976cb7f7125469707321849737cd1b3bc # v7
+        with:
+          workdir: .
+          verb: run
+          args: go run ./test/integration/cmd/run.go
+          version: 'latest'

.gitignore

@@ -27,3 +27,10 @@ dist
 
 # openfeature cli config
 .openfeature.yaml
+
+.idea/
+
+node_modules/
+npm-debug.log*
+generated/
+*.log

.goreleaser.yaml

@@ -21,6 +21,7 @@ builds:
       - linux
       - windows
       - darwin
+    binary: ./cmd/openfeature
 
 archives:
   - formats: tar.gz
@@ -35,49 +36,49 @@ archives:
     # use zip for windows archives
     format_overrides:
       - goos: windows
-        formats: [ 'zip' ]
+        formats: ["zip"]
 
 checksum:
-  name_template: 'checksums.txt'
+  name_template: "checksums.txt"
 
 report_sizes: true
 
 dockers:
-- image_templates: ["ghcr.io/open-feature/cli:{{ .Version }}-amd64"]
+  - image_templates: ["ghcr.io/open-feature/cli:{{ .Version }}-amd64"]
-  dockerfile: Dockerfile
+    dockerfile: Dockerfile
-  use: buildx
+    use: buildx
-  build_flag_templates:
+    build_flag_templates:
-  - --platform=linux/amd64
+      - --platform=linux/amd64
-  - --label=org.opencontainers.image.title={{ .ProjectName }} cli
+      - --label=org.opencontainers.image.title={{ .ProjectName }} cli
-  - --label=org.opencontainers.image.url=https://github.com/open-feature/cli
+      - --label=org.opencontainers.image.url=https://github.com/open-feature/cli
-  - --label=org.opencontainers.image.source=https://github.com/open-feature/cli
+      - --label=org.opencontainers.image.source=https://github.com/open-feature/cli
-  - --label=org.opencontainers.image.version={{ .Version }}
+      - --label=org.opencontainers.image.version={{ .Version }}
-  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+      - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
-  - --label=org.opencontainers.image.description="OpenFeature’s official command-line tool"
+      - --label=org.opencontainers.image.description="OpenFeature’s official command-line tool"
-  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+      - --label=org.opencontainers.image.revision={{ .FullCommit }}
-  - --label=org.opencontainers.image.licenses=Apache-2.0
+      - --label=org.opencontainers.image.licenses=Apache-2.0
 
-- image_templates: ["ghcr.io/open-feature/cli:{{ .Version }}-arm64"]
+  - image_templates: ["ghcr.io/open-feature/cli:{{ .Version }}-arm64"]
-  goarch: arm64
+    goarch: arm64
-  dockerfile: Dockerfile
+    dockerfile: Dockerfile
-  use: buildx
+    use: buildx
-  build_flag_templates:
+    build_flag_templates:
-  - --platform=linux/arm64
+      - --platform=linux/arm64
-  - --label=org.opencontainers.image.title={{ .ProjectName }} cli
+      - --label=org.opencontainers.image.title={{ .ProjectName }} cli
-  - --label=org.opencontainers.image.url=https://github.com/open-feature/cli
+      - --label=org.opencontainers.image.url=https://github.com/open-feature/cli
-  - --label=org.opencontainers.image.source=https://github.com/open-feature/cli
+      - --label=org.opencontainers.image.source=https://github.com/open-feature/cli
-  - --label=org.opencontainers.image.version={{ .Version }}
+      - --label=org.opencontainers.image.version={{ .Version }}
-  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+      - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
-  - --label=org.opencontainers.image.description="OpenFeature’s official command-line tool"
+      - --label=org.opencontainers.image.description="OpenFeature’s official command-line tool"
-  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+      - --label=org.opencontainers.image.revision={{ .FullCommit }}
-  - --label=org.opencontainers.image.licenses=Apache-2.0
+      - --label=org.opencontainers.image.licenses=Apache-2.0
 
 docker_manifests:
-- name_template: ghcr.io/open-feature/cli:{{ .Version }}
+  - name_template: ghcr.io/open-feature/cli:{{ .Version }}
-  image_templates:
+    image_templates:
-  - ghcr.io/open-feature/cli:{{ .Version }}-amd64
+      - ghcr.io/open-feature/cli:{{ .Version }}-amd64
-  - ghcr.io/open-feature/cli:{{ .Version }}-arm64
+      - ghcr.io/open-feature/cli:{{ .Version }}-arm64
-- name_template: ghcr.io/open-feature/cli:latest
+  - name_template: ghcr.io/open-feature/cli:latest
-  image_templates:
+    image_templates:
-  - ghcr.io/open-feature/cli:{{ .Version }}-amd64
+      - ghcr.io/open-feature/cli:{{ .Version }}-amd64
-  - ghcr.io/open-feature/cli:{{ .Version }}-arm64
+      - ghcr.io/open-feature/cli:{{ .Version }}-arm64

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.3.2"
+  ".": "0.3.5"
 }

CHANGELOG.md

@@ -1,5 +1,40 @@
 # Changelog
 
+## [0.3.5](https://github.com/open-feature/cli/compare/v0.3.4...v0.3.5) (2025-05-20)
+
+
+### 🐛 Bug Fixes
+
+* Naming of generated java class ([#111](https://github.com/open-feature/cli/issues/111)) ([49e65c8](https://github.com/open-feature/cli/commit/49e65c828330abb732eb3b9cf85850bb5ac36531))
+
+## [0.3.4](https://github.com/open-feature/cli/compare/v0.3.3...v0.3.4) (2025-05-14)
+
+
+### ✨ New Features
+
+* add java generator ([#107](https://github.com/open-feature/cli/issues/107)) ([9a9f11f](https://github.com/open-feature/cli/commit/9a9f11fc6c6a8ffa38870e62ac26d9f8f679825b))
+* adds compare command ([#93](https://github.com/open-feature/cli/issues/93)) ([063cfca](https://github.com/open-feature/cli/commit/063cfca2d79c9f75e181422ec375e300e020e57f))
+* introduce dagger for integration testing and ci ([#100](https://github.com/open-feature/cli/issues/100)) ([96f4cde](https://github.com/open-feature/cli/commit/96f4cde0f87b8daf70e02c1d4ca3bcec018fee02))
+
+## [0.3.3](https://github.com/open-feature/cli/compare/v0.3.2...v0.3.3) (2025-04-18)
+
+
+### 🐛 Bug Fixes
+
+* use the correct json schema url in init command ([#96](https://github.com/open-feature/cli/issues/96)) ([412a117](https://github.com/open-feature/cli/commit/412a1174b5dfe9ba77e18ec57d5a761711067386))
+
+
+### ✨ New Features
+
+* add codegen for NestJS ([#99](https://github.com/open-feature/cli/issues/99)) ([5210429](https://github.com/open-feature/cli/commit/5210429e39c10c91482cb0a0a8b2f4431a0aa182))
+* **csharp:** added generator and integration tests ([#97](https://github.com/open-feature/cli/issues/97)) ([ae64581](https://github.com/open-feature/cli/commit/ae645813c48b5ef10d8557406e7ab5c96ce3df69))
+* Python generator ([#95](https://github.com/open-feature/cli/issues/95)) ([1f8f43a](https://github.com/open-feature/cli/commit/1f8f43ae049fcf7c4feba3edaa697329688f7343))
+
+
+### 🧹 Chore
+
+* automate project standards before push ([#94](https://github.com/open-feature/cli/issues/94)) ([e32547f](https://github.com/open-feature/cli/commit/e32547f73495a525ed4ef5e2cadd45642d6fb172))
+
 ## [0.3.2](https://github.com/open-feature/cli/compare/v0.3.1...v0.3.2) (2025-04-02)
 
 

CONTRIBUTING.md

@@ -1,3 +1,7 @@
+# Contributing to OpenFeature CLI
+
+Thank you for your interest in contributing to the OpenFeature CLI! This document provides guidelines and instructions to help you get started with contributing to the project. Whether you're fixing a bug, adding a new feature, or improving documentation, your contributions are greatly appreciated.
+
 ## Contributing New Generators
 
 We welcome contributions for new generators to extend the functionality of the OpenFeature CLI. Below are the steps to contribute a new generator:
@@ -32,6 +36,81 @@ We welcome contributions for new generators to extend the functionality of the O
 
 11. **Address Feedback**: Be responsive to feedback from the maintainers. Make any necessary changes and update your pull request as needed.
 
+### Testing
+
+The OpenFeature CLI includes both unit and integration tests to ensure quality and correctness.
+
+#### Unit Tests
+
+Run the unit tests with:
+
+```bash
+go test ./...
+```
+
+#### Integration Tests
+
+To verify that generated code compiles correctly, the project includes integration tests. The CLI uses a Dagger-based integration testing framework to test code generation for each supported language:
+
+```bash
+# Run all integration tests
+make test-integration
+
+# Run tests for a specific language
+make test-csharp-dagger
+```
+
+For more information on the integration testing framework, see [Integration Testing](./docs/integration-testing.md).
+
+## Setting Up Lefthook
+
+To streamline the setup of Git hooks for this project, we utilize [Lefthook](https://github.com/evilmartians/lefthook). Lefthook automates pre-commit and pre-push checks, ensuring consistent enforcement of best practices across the team. These checks include code formatting, documentation generation, and running tests.
+
+This tool is particularly helpful for new contributors or those returning to the project after some time, as it provides a seamless way to align with the project's standards. By catching issues early in your local development environment, Lefthook helps you address potential problems before opening a Pull Request, saving time and effort for both contributors and maintainers.
+
+### Installation
+
+1. Install Lefthook using Homebrew:
+
+   ```bash
+   brew install lefthook
+   ```
+
+2. Install the Lefthook configuration into your Git repository:
+
+   ```bash
+   lefthook install
+   ```
+
+### Pre-Commit Hook
+
+The pre-commit hook is configured to run the following check:
+
+1. **Code Formatting**: Ensures all files are properly formatted using `go fmt`. Any changes made by `go fmt` will be automatically staged.
+
+### Pre-Push Hook
+
+The pre-push hook is configured to run the following checks:
+
+1. **Documentation Generation**: Runs `make generate-docs` to ensure documentation is up-to-date. If any changes are detected, the push will be blocked until the changes are committed.
+2. **Tests**: Executes `make test` to verify that all tests pass. If any tests fail, the push will be blocked.
+
+### Running Hooks Manually
+
+You can manually run the hooks using the following commands:
+
+- Pre-commit hook:
+
+  ```bash
+  lefthook run pre-commit
+  ```
+
+- Pre-push hook:
+
+  ```bash
+  lefthook run pre-push
+  ```
+
 ## Templates
 
 ### Data

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.21
+FROM alpine:3.22
 
 COPY ./openfeature usr/local/bin/openfeature
 

Makefile

@@ -1,10 +1,30 @@
-
 .PHONY: test
 test: 
 	@echo "Running tests..."
 	@go test -v ./...
 	@echo "Tests passed successfully!"
 
+# Dagger-based integration tests
+.PHONY: test-integration-csharp
+test-integration-csharp:
+	@echo "Running C# integration test with Dagger..."
+	@go run ./test/integration/cmd/csharp/run.go
+
+.PHONY: test-integration-go
+test-integration-go:
+	@echo "Running Go integration test with Dagger..."
+	@go run ./test/integration/cmd/go/run.go
+
+.PHONY: test-integration-nodejs
+test-integration-nodejs:
+	@echo "Running NodeJS integration test with Dagger..."
+	@go run ./test/integration/cmd/nodejs/run.go
+
+.PHONY: test-integration
+test-integration:
+	@echo "Running all integration tests with Dagger..."
+	@go run ./test/integration/cmd/run.go
+
 generate-docs:
 	@echo "Generating documentation..."
 	@go run ./docs/generate-commands.go
@@ -14,3 +34,9 @@ generate-schema:
 	@echo "Generating schema..."
 	@go run ./schema/generate-schema.go
 	@echo "Schema generated successfully!"
+
+.PHONY: fmt
+fmt:
+	@echo "Running go fmt..."
+	@go fmt ./...
+	@echo "Code formatted successfully!"

README.md

@@ -58,7 +58,7 @@ docker run -it -v $(pwd):/local -w /local ghcr.io/open-feature/cli:latest
 If you have `Go >= 1.23` installed, you can install the CLI using the following command:
 
 ```bash
-go install github.com/open-feature/cli@latest
+go install github.com/open-feature/cli/cmd/openfeature@latest
 ```
 
 ### via pre-built binaries

cmd/generate.go

@@ -1,209 +0,0 @@
-package cmd
-
-import (
-	"strings"
-
-	"github.com/open-feature/cli/internal/config"
-	"github.com/open-feature/cli/internal/flagset"
-	"github.com/open-feature/cli/internal/generators"
-	"github.com/open-feature/cli/internal/generators/golang"
-	"github.com/open-feature/cli/internal/generators/nodejs"
-	"github.com/open-feature/cli/internal/generators/react"
-	"github.com/open-feature/cli/internal/logger"
-	"github.com/spf13/cobra"
-)
-
-// addStabilityInfo adds stability information to the command's help template before "Usage:"
-func addStabilityInfo(cmd *cobra.Command) {
-	// Only modify commands that have a stability annotation
-	if stability, ok := cmd.Annotations["stability"]; ok {
-		originalTemplate := cmd.UsageTemplate()
-
-		// Find the "Usage:" section and insert stability info before it
-		if strings.Contains(originalTemplate, "Usage:") {
-			customTemplate := strings.Replace(
-				originalTemplate,
-				"Usage:",
-				"Stability: "+stability+"\n\nUsage:",
-				1, // Replace only the first occurrence
-			)
-			cmd.SetUsageTemplate(customTemplate)
-		} else {
-			// Fallback if "Usage:" not found - prepend to the template
-			customTemplate := "Stability: " + stability + "\n\n" + originalTemplate
-			cmd.SetUsageTemplate(customTemplate)
-		}
-	}
-}
-
-func GetGenerateNodeJSCmd() *cobra.Command {
-	nodeJSCmd := &cobra.Command{
-		Use:   "nodejs",
-		Short: "Generate typesafe Node.js client.",
-		Long:  `Generate typesafe Node.js client compatible with the OpenFeature JavaScript Server SDK.`,
-		Annotations: map[string]string{
-			"stability": string(generators.Alpha),
-		},
-		PreRunE: func(cmd *cobra.Command, args []string) error {
-			return initializeConfig(cmd, "generate.nodejs")
-		},
-		RunE: func(cmd *cobra.Command, args []string) error {
-			manifestPath := config.GetManifestPath(cmd)
-			outputPath := config.GetOutputPath(cmd)
-
-			logger.Default.GenerationStarted("Node.js")
-
-			params := generators.Params[nodejs.Params]{
-				OutputPath: outputPath,
-				Custom:     nodejs.Params{},
-			}
-			flagset, err := flagset.Load(manifestPath)
-			if err != nil {
-				return err
-			}
-
-			generator := nodejs.NewGenerator(flagset)
-			logger.Default.Debug("Executing Node.js generator")
-			err = generator.Generate(&params)
-			if err != nil {
-				return err
-			}
-	
-			logger.Default.GenerationComplete("Node.js")
-			
-			return nil
-		},
-	}
-
-	addStabilityInfo(nodeJSCmd)
-
-	return nodeJSCmd
-}
-
-func GetGenerateReactCmd() *cobra.Command {
-	reactCmd := &cobra.Command{
-		Use:   "react",
-		Short: "Generate typesafe React Hooks.",
-		Long:  `Generate typesafe React Hooks compatible with the OpenFeature React SDK.`,
-		Annotations: map[string]string{
-			"stability": string(generators.Alpha),
-		},
-		PreRunE: func(cmd *cobra.Command, args []string) error {
-			return initializeConfig(cmd, "generate.react")
-		},
-		RunE: func(cmd *cobra.Command, args []string) error {
-			manifestPath := config.GetManifestPath(cmd)
-			outputPath := config.GetOutputPath(cmd)
-			
-			logger.Default.GenerationStarted("React")
-
-			params := generators.Params[react.Params]{
-				OutputPath: outputPath,
-				Custom:     react.Params{},
-			}
-			flagset, err := flagset.Load(manifestPath)
-			if err != nil {
-				return err
-			}
-
-			generator := react.NewGenerator(flagset)
-			logger.Default.Debug("Executing React generator")
-			err = generator.Generate(&params)
-			if err != nil {
-				return err
-			}
-			
-			logger.Default.GenerationComplete("React")
-			
-			return nil
-		},
-	}
-
-	addStabilityInfo(reactCmd)
-
-	return reactCmd
-}
-
-func GetGenerateGoCmd() *cobra.Command {
-	goCmd := &cobra.Command{
-		Use:   "go",
-		Short: "Generate typesafe accessors for OpenFeature.",
-		Long:  `Generate typesafe accessors compatible with the OpenFeature Go SDK.`,
-		Annotations: map[string]string{
-			"stability": string(generators.Alpha),
-		},
-		PreRunE: func(cmd *cobra.Command, args []string) error {
-			return initializeConfig(cmd, "generate.go")
-		},
-		RunE: func(cmd *cobra.Command, args []string) error {
-			goPackageName := config.GetGoPackageName(cmd)
-			manifestPath := config.GetManifestPath(cmd)
-			outputPath := config.GetOutputPath(cmd)
-			
-			logger.Default.GenerationStarted("Go")
-
-			params := generators.Params[golang.Params]{
-				OutputPath: outputPath,
-				Custom: golang.Params{
-					GoPackage: goPackageName,
-				},
-			}
-
-			flagset, err := flagset.Load(manifestPath)
-			if err != nil {
-				return err
-			}
-
-			generator := golang.NewGenerator(flagset)
-			logger.Default.Debug("Executing Go generator")
-			err = generator.Generate(&params)
-			if err != nil {
-				return err
-			}
-			
-			logger.Default.GenerationComplete("Go")
-			
-			return nil
-		},
-	}
-
-	// Add Go-specific flags
-	config.AddGoGenerateFlags(goCmd)
-
-	addStabilityInfo(goCmd)
-
-	return goCmd
-}
-
-func init() {
-	// Register generators with the manager
-	generators.DefaultManager.Register(GetGenerateReactCmd)
-	generators.DefaultManager.Register(GetGenerateGoCmd)
-	generators.DefaultManager.Register(GetGenerateNodeJSCmd)
-}
-
-func GetGenerateCmd() *cobra.Command {
-	generateCmd := &cobra.Command{
-		Use:   "generate",
-		Short: "Generate typesafe OpenFeature accessors.",
-		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
-			return initializeConfig(cmd, "generate")
-		},
-		RunE: func(cmd *cobra.Command, args []string) error {
-			cmd.Println("Available generators:")
-			return generators.DefaultManager.PrintGeneratorsTable()
-		},
-	}
-
-	// Add generate flags using the config package
-	config.AddGenerateFlags(generateCmd)
-
-	// Add all registered generator commands
-	for _, subCmd := range generators.DefaultManager.GetCommands() {
-		generateCmd.AddCommand(subCmd)
-	}
-	
-	addStabilityInfo(generateCmd)
-
-	return generateCmd
-}

cmd/openfeature/main.go

@@ -1,6 +1,6 @@
 package main
 
-import "github.com/open-feature/cli/cmd"
+import "github.com/open-feature/cli/internal/cmd"
 
 var (
 	// Overridden by Go Releaser at build time

docs/commands/openfeature.md

@@ -23,6 +23,7 @@ openfeature [flags]
 
 ### SEE ALSO
 
+* [openfeature compare](openfeature_compare.md)	 - Compare two feature flag manifests
 * [openfeature generate](openfeature_generate.md)	 - Generate typesafe OpenFeature accessors.
 * [openfeature init](openfeature_init.md)	 - Initialize a new project
 * [openfeature version](openfeature_version.md)	 - Print the version number of the OpenFeature CLI

docs/commands/openfeature_compare.md

@@ -0,0 +1,34 @@
+<!-- markdownlint-disable-file -->
+<!-- WARNING: THIS DOC IS AUTO-GENERATED. DO NOT EDIT! -->
+## openfeature compare
+
+Compare two feature flag manifests
+
+### Synopsis
+
+Compare two OpenFeature flag manifests and display the differences in a structured format.
+
+```
+openfeature compare [flags]
+```
+
+### Options
+
+```
+  -a, --against string   Path to the target manifest file to compare against
+  -h, --help             help for compare
+  -o, --output string    Output format. Valid formats: tree, flat, json, yaml (default "tree")
+```
+
+### Options inherited from parent commands
+
+```
+      --debug             Enable debug logging
+  -m, --manifest string   Path to the flag manifest (default "flags.json")
+      --no-input          Disable interactive prompts
+```
+
+### SEE ALSO
+
+* [openfeature](openfeature.md)	 - CLI for OpenFeature.
+

docs/commands/openfeature_generate.md

@@ -26,7 +26,11 @@ openfeature generate [flags]
 ### SEE ALSO
 
 * [openfeature](openfeature.md)	 - CLI for OpenFeature.
+* [openfeature generate csharp](openfeature_generate_csharp.md)	 - Generate typesafe C# client.
 * [openfeature generate go](openfeature_generate_go.md)	 - Generate typesafe accessors for OpenFeature.
+* [openfeature generate java](openfeature_generate_java.md)	 - Generate typesafe Java client.
+* [openfeature generate nestjs](openfeature_generate_nestjs.md)	 - Generate typesafe NestJS decorators.
 * [openfeature generate nodejs](openfeature_generate_nodejs.md)	 - Generate typesafe Node.js client.
+* [openfeature generate python](openfeature_generate_python.md)	 - Generate typesafe Python client.
 * [openfeature generate react](openfeature_generate_react.md)	 - Generate typesafe React Hooks.
 

docs/commands/openfeature_generate_csharp.md

@@ -0,0 +1,37 @@
+<!-- markdownlint-disable-file -->
+<!-- WARNING: THIS DOC IS AUTO-GENERATED. DO NOT EDIT! -->
+## openfeature generate csharp
+
+Generate typesafe C# client.
+
+
+> **Stability**: alpha
+
+### Synopsis
+
+Generate typesafe C# client compatible with the OpenFeature .NET SDK.
+
+```
+openfeature generate csharp [flags]
+```
+
+### Options
+
+```
+  -h, --help               help for csharp
+      --namespace string   Namespace for the generated C# code (default "OpenFeature")
+```
+
+### Options inherited from parent commands
+
+```
+      --debug             Enable debug logging
+  -m, --manifest string   Path to the flag manifest (default "flags.json")
+      --no-input          Disable interactive prompts
+  -o, --output string     Path to where the generated files should be saved
+```
+
+### SEE ALSO
+
+* [openfeature generate](openfeature_generate.md)	 - Generate typesafe OpenFeature accessors.
+

docs/commands/openfeature_generate_java.md

@@ -0,0 +1,37 @@
+<!-- markdownlint-disable-file -->
+<!-- WARNING: THIS DOC IS AUTO-GENERATED. DO NOT EDIT! -->
+## openfeature generate java
+
+Generate typesafe Java client.
+
+
+> **Stability**: alpha
+
+### Synopsis
+
+Generate typesafe Java client compatible with the OpenFeature Java SDK.
+
+```
+openfeature generate java [flags]
+```
+
+### Options
+
+```
+  -h, --help                  help for java
+      --package-name string   Name of the generated Java package (default "com.example.openfeature")
+```
+
+### Options inherited from parent commands
+
+```
+      --debug             Enable debug logging
+  -m, --manifest string   Path to the flag manifest (default "flags.json")
+      --no-input          Disable interactive prompts
+  -o, --output string     Path to where the generated files should be saved
+```
+
+### SEE ALSO
+
+* [openfeature generate](openfeature_generate.md)	 - Generate typesafe OpenFeature accessors.
+

docs/commands/openfeature_generate_nestjs.md

@@ -0,0 +1,36 @@
+<!-- markdownlint-disable-file -->
+<!-- WARNING: THIS DOC IS AUTO-GENERATED. DO NOT EDIT! -->
+## openfeature generate nestjs
+
+Generate typesafe NestJS decorators.
+
+
+> **Stability**: alpha
+
+### Synopsis
+
+Generate typesafe NestJS decorators compatible with the OpenFeature NestJS SDK.
+
+```
+openfeature generate nestjs [flags]
+```
+
+### Options
+
+```
+  -h, --help   help for nestjs
+```
+
+### Options inherited from parent commands
+
+```
+      --debug             Enable debug logging
+  -m, --manifest string   Path to the flag manifest (default "flags.json")
+      --no-input          Disable interactive prompts
+  -o, --output string     Path to where the generated files should be saved
+```
+
+### SEE ALSO
+
+* [openfeature generate](openfeature_generate.md)	 - Generate typesafe OpenFeature accessors.
+

docs/commands/openfeature_generate_python.md

@@ -0,0 +1,36 @@
+<!-- markdownlint-disable-file -->
+<!-- WARNING: THIS DOC IS AUTO-GENERATED. DO NOT EDIT! -->
+## openfeature generate python
+
+Generate typesafe Python client.
+
+
+> **Stability**: alpha
+
+### Synopsis
+
+Generate typesafe Python client compatible with the OpenFeature Python SDK.
+
+```
+openfeature generate python [flags]
+```
+
+### Options
+
+```
+  -h, --help   help for python
+```
+
+### Options inherited from parent commands
+
+```
+      --debug             Enable debug logging
+  -m, --manifest string   Path to the flag manifest (default "flags.json")
+      --no-input          Disable interactive prompts
+  -o, --output string     Path to where the generated files should be saved
+```
+
+### SEE ALSO
+
+* [openfeature generate](openfeature_generate.md)	 - Generate typesafe OpenFeature accessors.
+

docs/generate-commands.go

@@ -6,7 +6,7 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/open-feature/cli/cmd"
+	"github.com/open-feature/cli/internal/cmd"
 	"github.com/spf13/cobra"
 	"github.com/spf13/cobra/doc"
 )

go.mod

@@ -2,53 +2,85 @@ module github.com/open-feature/cli
 
 go 1.23.0
 
-toolchain go1.24.0
-
 require (
-	github.com/google/go-cmp v0.6.0
+	dagger.io/dagger v0.18.12
+	github.com/google/go-cmp v0.7.0
 	github.com/iancoleman/strcase v0.3.0
 	github.com/invopop/jsonschema v0.13.0
-	github.com/pterm/pterm v0.12.80
+	github.com/pterm/pterm v0.12.81
 	github.com/spf13/afero v1.14.0
-	github.com/spf13/cobra v1.8.1
+	github.com/spf13/cobra v1.9.1
 	github.com/spf13/pflag v1.0.6
-	github.com/spf13/viper v1.20.0
+	github.com/spf13/viper v1.20.1
 	github.com/stretchr/testify v1.10.0
 	github.com/xeipuuv/gojsonschema v1.2.0
-	golang.org/x/text v0.23.0
+	golang.org/x/text v0.26.0
+	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
 	atomicgo.dev/cursor v0.2.0 // indirect
 	atomicgo.dev/keyboard v0.2.9 // indirect
 	atomicgo.dev/schedule v0.1.0 // indirect
+	github.com/99designs/gqlgen v0.17.75 // indirect
+	github.com/Khan/genqlient v0.8.1 // indirect
+	github.com/adrg/xdg v0.5.3 // indirect
 	github.com/bahlo/generic-list-go v0.2.0 // indirect
 	github.com/buger/jsonparser v1.1.1 // indirect
-	github.com/containerd/console v1.0.3 // indirect
+	github.com/cenkalti/backoff/v5 v5.0.2 // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.4 // indirect
+	github.com/containerd/console v1.0.5 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gookit/color v1.5.4 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/lithammer/fuzzysearch v1.1.8 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/sagikazarmark/locafero v0.8.0 // indirect
+	github.com/sagikazarmark/locafero v0.9.0 // indirect
+	github.com/sosodev/duration v1.3.1 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
-	github.com/spf13/cast v1.7.1 // indirect
+	github.com/spf13/cast v1.8.0 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/vektah/gqlparser/v2 v2.5.28 // indirect
 	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
-	github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f // indirect
+	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/otel v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.12.2 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.12.2 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.36.0 // indirect
+	go.opentelemetry.io/otel/log v0.12.2 // indirect
+	go.opentelemetry.io/otel/metric v1.36.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.36.0 // indirect
+	go.opentelemetry.io/otel/sdk/log v0.12.2 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.36.0 // indirect
+	go.opentelemetry.io/otel/trace v1.36.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.7.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
+	golang.org/x/exp v0.0.0-20250530174510-65e920069ea6 // indirect
-	golang.org/x/sys v0.31.0 // indirect
+	golang.org/x/net v0.41.0 // indirect
-	golang.org/x/term v0.30.0 // indirect
+	golang.org/x/sync v0.15.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/term v0.32.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250528174236-200df99c418a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a // indirect
+	google.golang.org/grpc v1.73.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
 )

go.sum

@@ -6,6 +6,18 @@ atomicgo.dev/keyboard v0.2.9 h1:tOsIid3nlPLZ3lwgG8KZMp/SFmr7P0ssEN5JUsm78K8=
 atomicgo.dev/keyboard v0.2.9/go.mod h1:BC4w9g00XkxH/f1HXhW2sXmJFOCWbKn9xrOunSFtExQ=
 atomicgo.dev/schedule v0.1.0 h1:nTthAbhZS5YZmgYbb2+DH8uQIZcTlIrd4eYr3UQxEjs=
 atomicgo.dev/schedule v0.1.0/go.mod h1:xeUa3oAkiuHYh8bKiQBRojqAMq3PXXbJujjb0hw8pEU=
+dagger.io/dagger v0.18.10 h1:Ibyz5LqxjjEHfLMlaU9PJ3xt3ju7p29RWy0lVfvSNU0=
+dagger.io/dagger v0.18.10/go.mod h1:VSj+2HMd/EnaCVt7gTY70p8LBW+oQDYjA1XTadr8vBE=
+dagger.io/dagger v0.18.11 h1:6lSfemlbGM2HmdOjhgevrX2+orMDGKU/xTaBMZ+otyY=
+dagger.io/dagger v0.18.11/go.mod h1:azlZ24m2br95t0jQHUBpL5SiafeqtVDLl1Itlq6GO+4=
+dagger.io/dagger v0.18.12 h1:s7v8aHlzDUogZ/jW92lHC+gljCNRML+0mosfh13R4vs=
+dagger.io/dagger v0.18.12/go.mod h1:azlZ24m2br95t0jQHUBpL5SiafeqtVDLl1Itlq6GO+4=
+github.com/99designs/gqlgen v0.17.74 h1:1FuVtkXxOc87xpKio3f6sohREmec+Jvy86PcYOuwgWo=
+github.com/99designs/gqlgen v0.17.74/go.mod h1:a+iR6mfRLNRp++kDpooFHiPWYiWX3Yu1BIilQRHgh10=
+github.com/99designs/gqlgen v0.17.75 h1:GwHJsptXWLHeY7JO8b7YueUI4w9Pom6wJTICosDtQuI=
+github.com/99designs/gqlgen v0.17.75/go.mod h1:p7gbTpdnHyl70hmSpM8XG8GiKwmCv+T5zkdY8U8bLog=
+github.com/Khan/genqlient v0.8.1 h1:wtOCc8N9rNynRLXN3k3CnfzheCUNKBcvXmVv5zt6WCs=
+github.com/Khan/genqlient v0.8.1/go.mod h1:R2G6DzjBvCbhjsEajfRjbWdVglSH/73kSivC9TLWVjU=
 github.com/MarvinJWendt/testza v0.1.0/go.mod h1:7AxNvlfeHP7Z/hDQ5JtE3OKYT3XFUeLCDE2DQninSqs=
 github.com/MarvinJWendt/testza v0.2.1/go.mod h1:God7bhG8n6uQxwdScay+gjm9/LnO4D3kkcZX4hv9Rp8=
 github.com/MarvinJWendt/testza v0.2.8/go.mod h1:nwIcjmr0Zz+Rcwfh3/4UhBp7ePKVhuBExvZqnKYWlII=
@@ -15,38 +27,56 @@ github.com/MarvinJWendt/testza v0.3.0/go.mod h1:eFcL4I0idjtIx8P9C6KkAuLgATNKpX4/
 github.com/MarvinJWendt/testza v0.4.2/go.mod h1:mSdhXiKH8sg/gQehJ63bINcCKp7RtYewEjXsvsVUPbE=
 github.com/MarvinJWendt/testza v0.5.2 h1:53KDo64C1z/h/d/stCYCPY69bt/OSwjq5KpFNwi+zB4=
 github.com/MarvinJWendt/testza v0.5.2/go.mod h1:xu53QFE5sCdjtMCKk8YMQ2MnymimEctc4n3EjyIYvEY=
+github.com/adrg/xdg v0.5.3 h1:xRnxJXne7+oWDatRhR1JLnvuccuIeCoBu2rtuLqQB78=
+github.com/adrg/xdg v0.5.3/go.mod h1:nlTsY+NNiCBGCK2tpm09vRqfVzrc2fLmXGpBLF0zlTQ=
+github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ=
+github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/atomicgo/cursor v0.0.1/go.mod h1:cBON2QmmrysudxNBFthvMtN32r3jxVRIvzkUiF/RuIk=
 github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
 github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
 github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMUs=
 github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
-github.com/containerd/console v1.0.3 h1:lIr7SlA5PxZyMV30bDW0MGbiOPXwc63yRuCP0ARubLw=
+github.com/cenkalti/backoff/v5 v5.0.2 h1:rIfFVxEf1QsI7E1ZHfp/B4DF/6QBAUhmgkxc0H7Zss8=
+github.com/cenkalti/backoff/v5 v5.0.2/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
 github.com/containerd/console v1.0.3/go.mod h1:7LqA/THxQ86k76b8c/EMSiaJ3h1eZkMkXar0TQ1gf3U=
-github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/containerd/console v1.0.5 h1:R0ymNeydRqH2DmakFNdmjR2k0t7UPuiOV/N/27/qqsc=
-github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/containerd/console v1.0.5/go.mod h1:YynlIjWYF8myEu6sdkwKIvGQq+cOckRm6So2avqoYAk=
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/cpuguy83/go-md2man/v2 v2.0.7 h1:zbFlGlXEAKlwXpmvle3d8Oe3YnkKIK4xSRTd3sHPnBo=
+github.com/cpuguy83/go-md2man/v2 v2.0.7/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
-github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
+github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
-github.com/fsnotify/fsnotify v1.8.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
+github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-viper/mapstructure/v2 v2.2.1 h1:ZAaOCxANMuZx5RCeg0mBdEZk7DZasvvZIxtHqx8aGss=
 github.com/go-viper/mapstructure/v2 v2.2.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
-github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gookit/color v1.4.2/go.mod h1:fqRyamkC1W8uxl+lxCQxOT09l/vYfZ+QeiX3rKQHCoQ=
 github.com/gookit/color v1.5.0/go.mod h1:43aQb+Zerm/BWh2GnrgOQm7ffz7tvQXEKV6BFMl7wAo=
 github.com/gookit/color v1.5.4 h1:FZmqs7XOyGgCAxmWyPslpiok1k05wmY3SJTytgvYFs0=
 github.com/gookit/color v1.5.4/go.mod h1:pZJOeOS8DM43rXbp4AZo1n9zCU2qjpcRko0b6/QJi9w=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 h1:5ZPtiqj0JL5oKWmcsq4VMaAW5ukBEgSGXEN89zeH1Jo=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3/go.mod h1:ndYquD05frm2vACXE1nsccT4oJzjhw2arTS2cpUD1PI=
 github.com/iancoleman/strcase v0.3.0 h1:nTXanmYxhfFAMjZL34Ov6gkzEsSJZ5DbhxWjvSASxEI=
 github.com/iancoleman/strcase v0.3.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/invopop/jsonschema v0.13.0 h1:KvpoAJWEjR3uD9Kbm2HWJmqsEaHt8lBUpd0qHcIi21E=
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 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 h1:vr/HnozRka3pE4EsMEg1lgkXJkTFJCVUX+S/ZT6wYzM=
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 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
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 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.15.0 h1:KWH3jNZsfyT6xfAfKiz6MRNmd46ByHDYaZ7KSkCtdW8=
+golang.org/x/sync v0.15.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -149,31 +228,41 @@ golang.org/x/sys v0.0.0-20211013075003-97ac67df715c/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
-golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.30.0 h1:PQ39fJZ+mfadBm0y5WlL4vlM7Sx1Hgf13sMIY2+QS9Y=
+golang.org/x/term v0.32.0 h1:DR4lr0TjUs3epypdhTOkMmuF5CDFJ/8pOnbzMZPQ7bg=
-golang.org/x/term v0.30.0/go.mod h1:NYYFdzHoI5wRh/h5tDMdMqCqPJZEuNqVR5xJLd/n67g=
+golang.org/x/term v0.32.0/go.mod h1:uZG1FhGx848Sqfsq4/DlJr3xGGsYMu/L5GW4abiaEPQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
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-golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
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internal/cmd/compare.go

@@ -0,0 +1,268 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/open-feature/cli/internal/config"
+	"github.com/open-feature/cli/internal/manifest"
+	"github.com/pterm/pterm"
+	"github.com/spf13/cobra"
+	"gopkg.in/yaml.v3"
+)
+
+func GetCompareCmd() *cobra.Command {
+	compareCmd := &cobra.Command{
+		Use:   "compare",
+		Short: "Compare two feature flag manifests",
+		Long:  "Compare two OpenFeature flag manifests and display the differences in a structured format.",
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "compare")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// Get flags
+			sourcePath := config.GetManifestPath(cmd)
+			targetPath, _ := cmd.Flags().GetString("against")
+			outputFormat, _ := cmd.Flags().GetString("output")
+
+			// Validate flags
+			if sourcePath == "" || targetPath == "" {
+				return fmt.Errorf("both source (--manifest) and target (--against) paths are required")
+			}
+
+			// Validate output format
+			if !manifest.IsValidOutputFormat(outputFormat) {
+				return fmt.Errorf("invalid output format: %s. Valid formats are: %s",
+					outputFormat, strings.Join(manifest.GetValidOutputFormats(), ", "))
+			}
+
+			// Load manifests
+			sourceManifest, err := loadManifest(sourcePath)
+			if err != nil {
+				return fmt.Errorf("error loading source manifest: %w", err)
+			}
+
+			targetManifest, err := loadManifest(targetPath)
+			if err != nil {
+				return fmt.Errorf("error loading target manifest: %w", err)
+			}
+
+			// Compare manifests
+			changes, err := manifest.Compare(sourceManifest, targetManifest)
+			if err != nil {
+				return fmt.Errorf("error comparing manifests: %w", err)
+			}
+
+			// No changes
+			if len(changes) == 0 {
+				pterm.Success.Println("No differences found between the manifests.")
+				return nil
+			}
+
+			// Render differences based on the output format
+			switch manifest.OutputFormat(outputFormat) {
+			case manifest.OutputFormatFlat:
+				return renderFlatDiff(changes, cmd)
+			case manifest.OutputFormatJSON:
+				return renderJSONDiff(changes, cmd)
+			case manifest.OutputFormatYAML:
+				return renderYAMLDiff(changes, cmd)
+			default:
+				return renderTreeDiff(changes, cmd)
+			}
+		},
+	}
+
+	// Add flags specific to compare command
+	compareCmd.Flags().StringP("against", "a", "", "Path to the target manifest file to compare against")
+	compareCmd.Flags().StringP("output", "o", string(manifest.OutputFormatTree),
+		fmt.Sprintf("Output format. Valid formats: %s", strings.Join(manifest.GetValidOutputFormats(), ", ")))
+
+	// Mark required flags
+	_ = compareCmd.MarkFlagRequired("against")
+
+	return compareCmd
+}
+
+// loadManifest loads and unmarshals a manifest file from the given path
+func loadManifest(path string) (*manifest.Manifest, error) {
+	// Read file
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("error reading file: %w", err)
+	}
+
+	// Unmarshal JSON
+	var m manifest.Manifest
+	if err := json.Unmarshal(data, &m); err != nil {
+		return nil, fmt.Errorf("error unmarshaling JSON: %w", err)
+	}
+
+	return &m, nil
+}
+
+// renderTreeDiff renders changes with tree-structured inline differences
+func renderTreeDiff(changes []manifest.Change, cmd *cobra.Command) error {
+	pterm.Info.Printf("Found %d difference(s) between manifests:\n\n", len(changes))
+
+	// Group changes by type for easier reading
+	var (
+		additions     []manifest.Change
+		removals      []manifest.Change
+		modifications []manifest.Change
+	)
+
+	for _, change := range changes {
+		switch change.Type {
+		case "add":
+			additions = append(additions, change)
+		case "remove":
+			removals = append(removals, change)
+		case "change":
+			modifications = append(modifications, change)
+		}
+	}
+
+	// Print additions
+	if len(additions) > 0 {
+		pterm.FgGreen.Println("◆ Additions:")
+		for _, change := range additions {
+			flagName := strings.TrimPrefix(change.Path, "flags.")
+			pterm.FgGreen.Printf("  + %s\n", flagName)
+			valueJSON, _ := json.MarshalIndent(change.NewValue, "    ", "  ")
+			fmt.Printf("    %s\n", valueJSON)
+		}
+		fmt.Println()
+	}
+
+	// Print removals
+	if len(removals) > 0 {
+		pterm.FgRed.Println("◆ Removals:")
+		for _, change := range removals {
+			flagName := strings.TrimPrefix(change.Path, "flags.")
+			pterm.FgRed.Printf("  - %s\n", flagName)
+			valueJSON, _ := json.MarshalIndent(change.OldValue, "    ", "  ")
+			fmt.Printf("    %s\n", valueJSON)
+		}
+		fmt.Println()
+	}
+
+	// Print modifications
+	if len(modifications) > 0 {
+		pterm.FgYellow.Println("◆ Modifications:")
+		for _, change := range modifications {
+			flagName := strings.TrimPrefix(change.Path, "flags.")
+			pterm.FgYellow.Printf("  ~ %s\n", flagName)
+
+			// Marshall the values
+			oldJSON, _ := json.MarshalIndent(change.OldValue, "", "  ")
+			newJSON, _ := json.MarshalIndent(change.NewValue, "", "  ")
+
+			// Print the diff
+			fmt.Println("    Before:")
+			for _, line := range strings.Split(string(oldJSON), "\n") {
+				fmt.Printf("      %s\n", line)
+			}
+
+			fmt.Println("    After:")
+			for _, line := range strings.Split(string(newJSON), "\n") {
+				fmt.Printf("      %s\n", line)
+			}
+		}
+	}
+
+	return nil
+}
+
+// renderFlatDiff renders changes in a flat format
+func renderFlatDiff(changes []manifest.Change, cmd *cobra.Command) error {
+	pterm.Info.Printf("Found %d difference(s) between manifests:\n\n", len(changes))
+
+	for _, change := range changes {
+		flagName := strings.TrimPrefix(change.Path, "flags.")
+		switch change.Type {
+		case "add":
+			pterm.FgGreen.Printf("+ %s\n", flagName)
+		case "remove":
+			pterm.FgRed.Printf("- %s\n", flagName)
+		case "change":
+			pterm.FgYellow.Printf("~ %s\n", flagName)
+		}
+	}
+
+	return nil
+}
+
+// renderJSONDiff renders changes in JSON format
+func renderJSONDiff(changes []manifest.Change, cmd *cobra.Command) error {
+	// Create a structured response that can be easily consumed by tools
+	type structuredOutput struct {
+		TotalChanges  int               `json:"totalChanges" yaml:"totalChanges"`
+		Additions     []manifest.Change `json:"additions" yaml:"additions"`
+		Removals      []manifest.Change `json:"removals" yaml:"removals"`
+		Modifications []manifest.Change `json:"modifications" yaml:"modifications"`
+	}
+
+	// Group changes by type
+	var output structuredOutput
+	output.TotalChanges = len(changes)
+
+	for _, change := range changes {
+		switch change.Type {
+		case "add":
+			output.Additions = append(output.Additions, change)
+		case "remove":
+			output.Removals = append(output.Removals, change)
+		case "change":
+			output.Modifications = append(output.Modifications, change)
+		}
+	}
+
+	// Convert to JSON
+	jsonBytes, err := json.MarshalIndent(output, "", "  ")
+	if err != nil {
+		return fmt.Errorf("error marshaling JSON output: %w", err)
+	}
+
+	// Print the JSON
+	fmt.Println(string(jsonBytes))
+	return nil
+}
+
+// renderYAMLDiff renders changes in YAML format
+func renderYAMLDiff(changes []manifest.Change, cmd *cobra.Command) error {
+	// Use the same structured output type as JSON but with YAML tags
+	type structuredOutput struct {
+		TotalChanges  int               `json:"totalChanges" yaml:"totalChanges"`
+		Additions     []manifest.Change `json:"additions" yaml:"additions"`
+		Removals      []manifest.Change `json:"removals" yaml:"removals"`
+		Modifications []manifest.Change `json:"modifications" yaml:"modifications"`
+	}
+
+	// Group changes by type
+	var output structuredOutput
+	output.TotalChanges = len(changes)
+
+	for _, change := range changes {
+		switch change.Type {
+		case "add":
+			output.Additions = append(output.Additions, change)
+		case "remove":
+			output.Removals = append(output.Removals, change)
+		case "change":
+			output.Modifications = append(output.Modifications, change)
+		}
+	}
+
+	// Convert to YAML
+	yamlBytes, err := yaml.Marshal(output)
+	if err != nil {
+		return fmt.Errorf("error marshaling YAML output: %w", err)
+	}
+
+	// Print the YAML
+	fmt.Println(string(yamlBytes))
+	return nil
+}

internal/cmd/compare_test.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetCompareCmd(t *testing.T) {
+	cmd := GetCompareCmd()
+
+	assert.Equal(t, "compare", cmd.Use)
+	assert.Equal(t, "Compare two feature flag manifests", cmd.Short)
+
+	// Verify flags exist
+	againstFlag := cmd.Flag("against")
+	assert.NotNil(t, againstFlag)
+
+	// Verify output flag
+	outputFlag := cmd.Flag("output")
+	assert.NotNil(t, outputFlag)
+	assert.Equal(t, "tree", outputFlag.DefValue)
+}
+
+func TestCompareManifests(t *testing.T) {
+	// This test mainly verifies the command executes without errors
+	// with each of the supported output formats
+
+	formats := []string{"tree", "flat", "json", "yaml"}
+
+	for _, format := range formats {
+		t.Run(fmt.Sprintf("output_format_%s", format), func(t *testing.T) {
+			// Need to use the root command to properly inherit the manifest flag
+			rootCmd := GetRootCmd()
+
+			// Setup command line arguments
+			rootCmd.SetArgs([]string{
+				"compare",
+				"--manifest", "testdata/source_manifest.json",
+				"--against", "testdata/target_manifest.json",
+				"--output", format,
+			})
+
+			// Execute command
+			err := rootCmd.Execute()
+			assert.NoError(t, err, "Command should execute without errors with output format: "+format)
+		})
+	}
+}

internal/cmd/config.go

@@ -32,7 +32,6 @@ func initializeConfig(cmd *cobra.Command, bindPrefix string) error {
 		logger.Default.Debug(fmt.Sprintf("Using config file: %s", v.ConfigFileUsed()))
 	}
 
-
 	// Track which flags were set directly via command line
 	cmdLineFlags := make(map[string]bool)
 	cmd.Flags().Visit(func(f *pflag.Flag) {
@@ -53,7 +52,7 @@ func initializeConfig(cmd *cobra.Command, bindPrefix string) error {
 
 		// Check the most specific path (e.g., generate.go.package-name)
 		if bindPrefix != "" {
-			configPaths = append(configPaths, bindPrefix + "." + f.Name)
+			configPaths = append(configPaths, bindPrefix+"."+f.Name)
 
 			// Check parent paths (e.g., generate.package-name)
 			parts := strings.Split(bindPrefix, ".")

internal/cmd/generate.go

@@ -0,0 +1,414 @@
+package cmd
+
+import (
+	"strings"
+
+	"github.com/open-feature/cli/internal/config"
+	"github.com/open-feature/cli/internal/flagset"
+	"github.com/open-feature/cli/internal/generators"
+	"github.com/open-feature/cli/internal/generators/csharp"
+	"github.com/open-feature/cli/internal/generators/golang"
+	"github.com/open-feature/cli/internal/generators/java"
+	"github.com/open-feature/cli/internal/generators/nestjs"
+	"github.com/open-feature/cli/internal/generators/nodejs"
+	"github.com/open-feature/cli/internal/generators/python"
+	"github.com/open-feature/cli/internal/generators/react"
+	"github.com/open-feature/cli/internal/logger"
+	"github.com/spf13/cobra"
+)
+
+func GetGenerateCmd() *cobra.Command {
+	generateCmd := &cobra.Command{
+		Use:   "generate",
+		Short: "Generate typesafe OpenFeature accessors.",
+		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cmd.Println("Available generators:")
+			return generators.DefaultManager.PrintGeneratorsTable()
+		},
+	}
+
+	// Add generate flags using the config package
+	config.AddGenerateFlags(generateCmd)
+
+	// Add all registered generator commands
+	for _, subCmd := range generators.DefaultManager.GetCommands() {
+		generateCmd.AddCommand(subCmd)
+	}
+
+	addStabilityInfo(generateCmd)
+
+	return generateCmd
+}
+
+// addStabilityInfo adds stability information to the command's help template before "Usage:"
+func addStabilityInfo(cmd *cobra.Command) {
+	// Only modify commands that have a stability annotation
+	if stability, ok := cmd.Annotations["stability"]; ok {
+		originalTemplate := cmd.UsageTemplate()
+
+		// Find the "Usage:" section and insert stability info before it
+		if strings.Contains(originalTemplate, "Usage:") {
+			customTemplate := strings.Replace(
+				originalTemplate,
+				"Usage:",
+				"Stability: "+stability+"\n\nUsage:",
+				1, // Replace only the first occurrence
+			)
+			cmd.SetUsageTemplate(customTemplate)
+		} else {
+			// Fallback if "Usage:" not found - prepend to the template
+			customTemplate := "Stability: " + stability + "\n\n" + originalTemplate
+			cmd.SetUsageTemplate(customTemplate)
+		}
+	}
+}
+
+func getGenerateNodeJSCmd() *cobra.Command {
+	nodeJSCmd := &cobra.Command{
+		Use:   "nodejs",
+		Short: "Generate typesafe Node.js client.",
+		Long:  `Generate typesafe Node.js client compatible with the OpenFeature JavaScript Server SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.nodejs")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("Node.js")
+
+			params := generators.Params[nodejs.Params]{
+				OutputPath: outputPath,
+				Custom:     nodejs.Params{},
+			}
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := nodejs.NewGenerator(flagset)
+			logger.Default.Debug("Executing Node.js generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("Node.js")
+
+			return nil
+		},
+	}
+
+	addStabilityInfo(nodeJSCmd)
+
+	return nodeJSCmd
+}
+
+func getGenerateReactCmd() *cobra.Command {
+	reactCmd := &cobra.Command{
+		Use:   "react",
+		Short: "Generate typesafe React Hooks.",
+		Long:  `Generate typesafe React Hooks compatible with the OpenFeature React SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.react")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("React")
+
+			params := generators.Params[react.Params]{
+				OutputPath: outputPath,
+				Custom:     react.Params{},
+			}
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := react.NewGenerator(flagset)
+			logger.Default.Debug("Executing React generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("React")
+
+			return nil
+		},
+	}
+
+	addStabilityInfo(reactCmd)
+
+	return reactCmd
+}
+
+func GetGenerateNestJsCmd() *cobra.Command {
+	nestJsCmd := &cobra.Command{
+		Use:   "nestjs",
+		Short: "Generate typesafe NestJS decorators.",
+		Long:  `Generate typesafe NestJS decorators compatible with the OpenFeature NestJS SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.nestjs")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("NestJS")
+
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			nestjsParams := generators.Params[nestjs.Params]{
+				OutputPath: outputPath,
+				Custom:     nestjs.Params{},
+			}
+			nestjsGenerator := nestjs.NewGenerator(flagset)
+			logger.Default.Debug("Executing NestJS generator")
+			err = nestjsGenerator.Generate(&nestjsParams)
+			if err != nil {
+				return err
+			}
+
+			nodejsParams := generators.Params[nodejs.Params]{
+				OutputPath: outputPath,
+				Custom:     nodejs.Params{},
+			}
+			nodeGenerator := nodejs.NewGenerator(flagset)
+			err = nodeGenerator.Generate(&nodejsParams)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("NestJS")
+
+			return nil
+		},
+	}
+
+	addStabilityInfo(nestJsCmd)
+
+	return nestJsCmd
+}
+
+func getGenerateCSharpCmd() *cobra.Command {
+	csharpCmd := &cobra.Command{
+		Use:   "csharp",
+		Short: "Generate typesafe C# client.",
+		Long:  `Generate typesafe C# client compatible with the OpenFeature .NET SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.csharp")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			namespace := config.GetCSharpNamespace(cmd)
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("C#")
+
+			params := generators.Params[csharp.Params]{
+				OutputPath: outputPath,
+				Custom: csharp.Params{
+					Namespace: namespace,
+				},
+			}
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := csharp.NewGenerator(flagset)
+			logger.Default.Debug("Executing C# generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("C#")
+
+			return nil
+		},
+	}
+
+	// Add C#-specific flags
+	config.AddCSharpGenerateFlags(csharpCmd)
+
+	addStabilityInfo(csharpCmd)
+
+	return csharpCmd
+}
+
+func getGenerateJavaCmd() *cobra.Command {
+	javaCmd := &cobra.Command{
+		Use:   "java",
+		Short: "Generate typesafe Java client.",
+		Long:  `Generate typesafe Java client compatible with the OpenFeature Java SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.java")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			manifestPath := config.GetManifestPath(cmd)
+			javaPackageName := config.GetJavaPackageName(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("Java")
+
+			params := generators.Params[java.Params]{
+				OutputPath: outputPath,
+				Custom: java.Params{
+					JavaPackage: javaPackageName,
+				},
+			}
+
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := java.NewGenerator(flagset)
+			logger.Default.Debug("Executing Java generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("Java")
+
+			return nil
+
+		},
+	}
+
+	// Add Java specific flags
+	config.AddJavaGenerateFlags(javaCmd)
+
+	addStabilityInfo(javaCmd)
+
+	return javaCmd
+}
+
+func getGenerateGoCmd() *cobra.Command {
+	goCmd := &cobra.Command{
+		Use:   "go",
+		Short: "Generate typesafe accessors for OpenFeature.",
+		Long:  `Generate typesafe accessors compatible with the OpenFeature Go SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return initializeConfig(cmd, "generate.go")
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			goPackageName := config.GetGoPackageName(cmd)
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("Go")
+
+			params := generators.Params[golang.Params]{
+				OutputPath: outputPath,
+				Custom: golang.Params{
+					GoPackage: goPackageName,
+				},
+			}
+
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := golang.NewGenerator(flagset)
+			logger.Default.Debug("Executing Go generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("Go")
+
+			return nil
+		},
+	}
+
+	// Add Go-specific flags
+	config.AddGoGenerateFlags(goCmd)
+
+	addStabilityInfo(goCmd)
+
+	return goCmd
+}
+
+func getGeneratePythonCmd() *cobra.Command {
+	pythonCmd := &cobra.Command{
+		Use:   "python",
+		Short: "Generate typesafe Python client.",
+		Long:  `Generate typesafe Python client compatible with the OpenFeature Python SDK.`,
+		Annotations: map[string]string{
+			"stability": string(generators.Alpha),
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			manifestPath := config.GetManifestPath(cmd)
+			outputPath := config.GetOutputPath(cmd)
+
+			logger.Default.GenerationStarted("Python")
+
+			params := generators.Params[python.Params]{
+				OutputPath: outputPath,
+				Custom:     python.Params{},
+			}
+			flagset, err := flagset.Load(manifestPath)
+			if err != nil {
+				return err
+			}
+
+			generator := python.NewGenerator(flagset)
+			logger.Default.Debug("Executing Python generator")
+			err = generator.Generate(&params)
+			if err != nil {
+				return err
+			}
+
+			logger.Default.GenerationComplete("Python")
+
+			return nil
+		},
+	}
+
+	addStabilityInfo(pythonCmd)
+
+	return pythonCmd
+}
+
+func init() {
+	// Register generators with the manager
+	generators.DefaultManager.Register(getGenerateReactCmd)
+	generators.DefaultManager.Register(getGenerateGoCmd)
+	generators.DefaultManager.Register(getGenerateNodeJSCmd)
+	generators.DefaultManager.Register(getGeneratePythonCmd)
+	generators.DefaultManager.Register(getGenerateCSharpCmd)
+	generators.DefaultManager.Register(GetGenerateNestJsCmd)
+	generators.DefaultManager.Register(getGenerateJavaCmd)
+}

internal/cmd/generate_test.go

@@ -21,7 +21,7 @@ type generateTestCase struct {
 	outputGolden   string // path to the golden output file
 	outputPath     string // output directory (optional, defaults to "output")
 	outputFile     string // output file name
-	packageName    string // optional, only used for Go
+	packageName    string // optional, used for Go (package-name), Java (package-name) and C# (namespace)
 }
 
 func TestGenerate(t *testing.T) {
@@ -48,6 +48,36 @@ func TestGenerate(t *testing.T) {
 			outputGolden:   "testdata/success_nodejs.golden",
 			outputFile:     "openfeature.ts",
 		},
+		{
+			name:           "NestJS generation success",
+			command:        "nestjs",
+			manifestGolden: "testdata/success_manifest.golden",
+			outputGolden:   "testdata/success_nestjs.golden",
+			outputFile:     "openfeature-decorators.ts",
+		},
+		{
+			name:           "Python generation success",
+			command:        "python",
+			manifestGolden: "testdata/success_manifest.golden",
+			outputGolden:   "testdata/success_python.golden",
+			outputFile:     "openfeature.py",
+		},
+		{
+			name:           "CSharp generation success",
+			command:        "csharp",
+			manifestGolden: "testdata/success_manifest.golden",
+			outputGolden:   "testdata/success_csharp.golden",
+			outputFile:     "OpenFeature.g.cs",
+			packageName:    "TestNamespace", // Using packageName field for namespace
+		},
+		{
+			name:           "Java generation success",
+			command:        "java",
+			manifestGolden: "testdata/success_manifest.golden",
+			outputGolden:   "testdata/success_java.golden",
+			outputFile:     "OpenFeature.java",
+			packageName:    "com.example.openfeature",
+		},
 		// Add more test cases here as needed
 	}
 
@@ -79,9 +109,15 @@ func TestGenerate(t *testing.T) {
 				"--output", outputPath,
 			}
 
-			// Add package name if provided (for Go)
+			// Add parameters specific to each generator
 			if tc.packageName != "" {
-				args = append(args, "--package-name", tc.packageName)
+				if tc.command == "csharp" {
+					args = append(args, "--namespace", tc.packageName)
+				} else if tc.command == "go" {
+					args = append(args, "--package-name", tc.packageName)
+				} else if tc.command == "java" {
+					args = append(args, "--package-name", tc.packageName)
+				}
 			}
 
 			cmd.SetArgs(args)
@@ -100,7 +136,7 @@ func TestGenerate(t *testing.T) {
 
 func readOsFileAndWriteToMemMap(t *testing.T, inputPath string, memPath string, memFs afero.Fs) {
 	data, err := os.ReadFile(inputPath)
-	if (err != nil) {
+	if err != nil {
 		t.Fatalf("error reading file %q: %v", inputPath, err)
 	}
 	if err := memFs.MkdirAll(filepath.Dir(memPath), os.ModePerm); err != nil {
@@ -120,6 +156,17 @@ func readOsFileAndWriteToMemMap(t *testing.T, inputPath string, memPath string,
 	}
 }
 
+// normalizeLines trims trailing whitespace and carriage returns from each line.
+// This helps ensure consistent comparison by ignoring formatting differences like indentation or line endings.
+func normalizeLines(input []string) []string {
+	normalized := make([]string, len(input))
+	for i, line := range input {
+		// Trim right whitespace and convert \r\n or \r to \n
+		normalized[i] = strings.TrimRight(line, " \t\r")
+	}
+	return normalized
+}
+
 func compareOutput(t *testing.T, testFile, memoryOutputPath string, fs afero.Fs) {
 	want, err := os.ReadFile(testFile)
 	if err != nil {
@@ -132,8 +179,8 @@ func compareOutput(t *testing.T, testFile, memoryOutputPath string, fs afero.Fs)
 	}
 
 	// Convert to string arrays by splitting on newlines
-	wantLines := strings.Split(string(want), "\n")
+	wantLines := normalizeLines(strings.Split(string(want), "\n"))
-	gotLines := strings.Split(string(got), "\n")
+	gotLines := normalizeLines(strings.Split(string(got), "\n"))
 
 	if diff := cmp.Diff(wantLines, gotLines); diff != "" {
 		t.Errorf("output mismatch (-want +got):\n%s", diff)

internal/cmd/init_test.go

@@ -0,0 +1,28 @@
+package cmd
+
+import (
+	"testing"
+
+	"github.com/open-feature/cli/internal/config"
+	"github.com/open-feature/cli/internal/filesystem"
+	"github.com/spf13/afero"
+)
+
+func TestInitCmd(t *testing.T) {
+	fs := afero.NewMemMapFs()
+	filesystem.SetFileSystem(fs)
+	outputFile := "flags-test.json"
+	cmd := GetInitCmd()
+	// global flag exists on root only.
+	config.AddRootFlags(cmd)
+
+	cmd.SetArgs([]string{
+		"-m",
+		outputFile,
+	})
+	err := cmd.Execute()
+	if err != nil {
+		t.Error(err)
+	}
+	compareOutput(t, "testdata/success_init.golden", outputFile, fs)
+}

internal/cmd/root.go

@@ -44,7 +44,7 @@ func GetRootCmd() *cobra.Command {
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			printBanner()
-			logger.Default.Println("");
+			logger.Default.Println("")
 			logger.Default.Println("To see all the options, try 'openfeature --help'")
 			return nil
 		},
@@ -62,6 +62,7 @@ func GetRootCmd() *cobra.Command {
 	rootCmd.AddCommand(GetVersionCmd())
 	rootCmd.AddCommand(GetInitCmd())
 	rootCmd.AddCommand(GetGenerateCmd())
+	rootCmd.AddCommand(GetCompareCmd())
 
 	// Add a custom error handler after the command is created
 	rootCmd.SetFlagErrorFunc(func(cmd *cobra.Command, err error) error {

internal/cmd/testdata/source_manifest.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "https://raw.githubusercontent.com/open-feature/cli/refs/heads/main/schema/v0/flag_manifest.json",
+  "flags": {
+    "darkMode": {
+      "flagType": "boolean",
+      "description": "Enable dark mode",
+      "defaultValue": false
+    },
+    "backgroundColor": {
+      "flagType": "string",
+      "description": "Background color for the application",
+      "defaultValue": "white"
+    },
+    "maxItems": {
+      "flagType": "integer",
+      "description": "Maximum number of items to display",
+      "defaultValue": 10
+    }
+  }
+}

internal/cmd/testdata/success_csharp.golden

@@ -0,0 +1,251 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
+using OpenFeature;
+using OpenFeature.Model;
+
+namespace TestNamespace
+{
+    /// <summary>
+    /// Service collection extensions for OpenFeature
+    /// </summary>
+    public static class OpenFeatureServiceExtensions
+    {
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient())
+                .AddSingleton<GeneratedClient>();
+        }
+
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client for a specific domain
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services, string domain)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient(domain))
+                .AddSingleton<GeneratedClient>();
+        }
+    }
+
+    /// <summary>
+    /// Generated OpenFeature client for typesafe flag access
+    /// </summary>
+    public class GeneratedClient
+    {
+        private readonly IFeatureClient _client;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneratedClient"/> class.
+        /// </summary>
+        /// <param name="client">The OpenFeature client to use for flag evaluations.</param>
+        public GeneratedClient(IFeatureClient client)
+        {
+            _client = client ?? throw new ArgumentNullException(nameof(client));
+        }
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<double> DiscountPercentageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleValueAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<double>> DiscountPercentageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleDetailsAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<bool> EnableFeatureAAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanValueAsync("enableFeatureA", false, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<bool>> EnableFeatureADetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanDetailsAsync("enableFeatureA", false, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<string> GreetingMessageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringValueAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<string>> GreetingMessageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringDetailsAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<Value> ThemeCustomizationAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectValueAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<Value>> ThemeCustomizationDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectDetailsAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<int> UsernameMaxLengthAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerValueAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<int>> UsernameMaxLengthDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerDetailsAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+        
+
+        /// <summary>
+        /// Creates a new GeneratedClient using the default OpenFeature client
+        /// </summary>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient()
+        {
+            return new GeneratedClient(Api.Instance.GetClient());
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client with context
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <param name="evaluationContext">Default context to use for evaluations</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain, EvaluationContext? evaluationContext = null)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+    }
+}

internal/cmd/testdata/success_go.golden

@@ -14,6 +14,8 @@ type IntProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext
 type IntProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.IntEvaluationDetails, error)
 type StringProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext) (string, error)
 type StringProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.StringEvaluationDetails, error)
+type ObjectProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext) (any, error)
+type ObjectProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.InterfaceEvaluationDetails, error)
 
 var client openfeature.IClient = nil
 // Discount percentage applied to purchases.
@@ -67,6 +69,23 @@ var GreetingMessage = struct {
         return client.StringValueDetails(ctx, "greetingMessage", "Hello there!", evalCtx)
     },
 }
+// Allows customization of theme colors.
+var ThemeCustomization = struct {
+    // Value returns the value of the flag ThemeCustomization,
+    // as well as the evaluation error, if present.
+    Value ObjectProvider
+
+    // ValueWithDetails returns the value of the flag ThemeCustomization,
+    // the evaluation error, if any, and the evaluation details.
+    ValueWithDetails ObjectProviderDetails
+}{
+    Value: func(ctx context.Context, evalCtx openfeature.EvaluationContext) (any, error) {
+        return client.ObjectValue(ctx, "themeCustomization", map[string]any{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}, evalCtx)
+    },
+    ValueWithDetails: func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.InterfaceEvaluationDetails, error){
+        return client.ObjectValueDetails(ctx, "themeCustomization", map[string]any{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}, evalCtx)
+    },
+}
 // Maximum allowed length for usernames.
 var UsernameMaxLength = struct {
     // Value returns the value of the flag UsernameMaxLength,

internal/cmd/testdata/success_init.golden

@@ -0,0 +1,4 @@
+{
+  "$schema": "https://raw.githubusercontent.com/open-feature/cli/main/schema/v0/flag-manifest.json",
+  "flags": {}
+}

internal/cmd/testdata/success_java.golden

@@ -0,0 +1,184 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+package com.example.openfeature;
+
+import dev.openfeature.sdk.Client;
+import dev.openfeature.sdk.EvaluationContext;
+import dev.openfeature.sdk.FlagEvaluationDetails;
+import dev.openfeature.sdk.OpenFeatureAPI;
+
+public final class OpenFeature {
+
+    private OpenFeature() {} // prevent instantiation
+
+    public interface GeneratedClient {
+
+        /**
+         * Discount percentage applied to purchases.
+         * Details:
+         * - Flag key: discountPercentage
+         * - Type: Double
+         * - Default value: 0.15
+         * Returns the flag value
+         */
+        Double discountPercentage(EvaluationContext ctx);
+
+        /**
+         * Discount percentage applied to purchases.
+         * Details:
+         * - Flag key: discountPercentage
+         * - Type: Double
+         * - Default value: 0.15
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<Double> discountPercentageDetails(EvaluationContext ctx);
+
+        /**
+         * Controls whether Feature A is enabled.
+         * Details:
+         * - Flag key: enableFeatureA
+         * - Type: Boolean
+         * - Default value: false
+         * Returns the flag value
+         */
+        Boolean enableFeatureA(EvaluationContext ctx);
+
+        /**
+         * Controls whether Feature A is enabled.
+         * Details:
+         * - Flag key: enableFeatureA
+         * - Type: Boolean
+         * - Default value: false
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<Boolean> enableFeatureADetails(EvaluationContext ctx);
+
+        /**
+         * The message to use for greeting users.
+         * Details:
+         * - Flag key: greetingMessage
+         * - Type: String
+         * - Default value: Hello there!
+         * Returns the flag value
+         */
+        String greetingMessage(EvaluationContext ctx);
+
+        /**
+         * The message to use for greeting users.
+         * Details:
+         * - Flag key: greetingMessage
+         * - Type: String
+         * - Default value: Hello there!
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<String> greetingMessageDetails(EvaluationContext ctx);
+        
+        /**
+         * Allows customization of theme colors.
+         * Details:
+         * - Flag key: themeCustomization
+         * - Type: Object
+         * - Default value: Map.of("primaryColor", "#007bff", "secondaryColor", "#6c757d")
+         * Returns the flag value
+         */
+        Object themeCustomization(EvaluationContext ctx);
+
+        /**
+         * Allows customization of theme colors.
+         * Details:
+         * - Flag key: themeCustomization
+         * - Type: Object
+         * - Default value: Map.of("primaryColor", "#007bff", "secondaryColor", "#6c757d")
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<Object> themeCustomizationDetails(EvaluationContext ctx);
+        
+        /**
+         * Maximum allowed length for usernames.
+         * Details:
+         * - Flag key: usernameMaxLength
+         * - Type: Integer
+         * - Default value: 50
+         * Returns the flag value
+         */
+        Integer usernameMaxLength(EvaluationContext ctx);
+
+        /**
+         * Maximum allowed length for usernames.
+         * Details:
+         * - Flag key: usernameMaxLength
+         * - Type: Integer
+         * - Default value: 50
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<Integer> usernameMaxLengthDetails(EvaluationContext ctx);
+
+    }
+
+    private static final class OpenFeatureGeneratedClient implements GeneratedClient {
+        private final Client client;
+
+        private OpenFeatureGeneratedClient(Client client) {
+            this.client = client;
+        }
+
+
+        @Override
+        public Double discountPercentage(EvaluationContext ctx) {
+            return client.getDoubleValue("discountPercentage", 0.15, ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<Double> discountPercentageDetails(EvaluationContext ctx) {
+            return client.getDoubleDetails("discountPercentage", 0.15, ctx);
+        }
+
+        @Override
+        public Boolean enableFeatureA(EvaluationContext ctx) {
+            return client.getBooleanValue("enableFeatureA", false, ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<Boolean> enableFeatureADetails(EvaluationContext ctx) {
+            return client.getBooleanDetails("enableFeatureA", false, ctx);
+        }
+
+        @Override
+        public String greetingMessage(EvaluationContext ctx) {
+            return client.getStringValue("greetingMessage", "Hello there!", ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<String> greetingMessageDetails(EvaluationContext ctx) {
+            return client.getStringDetails("greetingMessage", "Hello there!", ctx);
+        }
+        
+        @Override
+        public Object themeCustomization(EvaluationContext ctx) {
+            return client.getObjectValue("themeCustomization", Map.of("primaryColor", "#007bff", "secondaryColor", "#6c757d"), ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<Object> themeCustomizationDetails(EvaluationContext ctx) {
+            return client.getObjectDetails("themeCustomization", Map.of("primaryColor", "#007bff", "secondaryColor", "#6c757d"), ctx);
+        }
+        
+        @Override
+        public Integer usernameMaxLength(EvaluationContext ctx) {
+            return client.getIntegerValue("usernameMaxLength", 50, ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<Integer> usernameMaxLengthDetails(EvaluationContext ctx) {
+            return client.getIntegerDetails("usernameMaxLength", 50, ctx);
+        }
+
+    }
+
+    public static GeneratedClient getClient() {
+        return new OpenFeatureGeneratedClient(OpenFeatureAPI.getInstance().getClient());
+    }
+
+    public static GeneratedClient getClient(String domain) {
+        return new OpenFeatureGeneratedClient(OpenFeatureAPI.getInstance().getClient(domain));
+    }
+}

internal/cmd/testdata/success_nestjs.golden

@@ -0,0 +1,220 @@
+import type { DynamicModule, FactoryProvider as NestFactoryProvider } from "@nestjs/common";
+import { Inject, Module } from "@nestjs/common";
+import type { Observable } from "rxjs";
+
+import type {
+  OpenFeature,
+  Client,
+  EvaluationContext,
+  EvaluationDetails,
+  OpenFeatureModuleOptions,
+  JsonValue
+} from "@openfeature/nestjs-sdk";
+import { OpenFeatureModule, BooleanFeatureFlag, StringFeatureFlag, NumberFeatureFlag, ObjectFeatureFlag } from "@openfeature/nestjs-sdk";
+
+import type { GeneratedClient } from "./openfeature";
+import { getGeneratedClient } from "./openfeature";
+
+/**
+ * Returns an injection token for a (domain scoped) generated OpenFeature client.
+ * @param {string} domain The domain of the generated OpenFeature client.
+ * @returns {string} The injection token.
+ */
+export function getOpenFeatureGeneratedClientToken(domain?: string): string {
+  return domain ? `OpenFeatureGeneratedClient_${domain}` : "OpenFeatureGeneratedClient_default";
+}
+
+/**
+ * Options for injecting an OpenFeature client into a constructor.
+ */
+interface FeatureClientProps {
+  /**
+   * The domain of the OpenFeature client, if a domain scoped client should be used.
+   * @see {@link Client.getBooleanDetails}
+   */
+  domain?: string;
+}
+
+/**
+ * Injects a generated typesafe feature client into a constructor or property of a class.
+ * @param {FeatureClientProps} [props] The options for injecting the client.
+ * @returns {PropertyDecorator & ParameterDecorator} The decorator function.
+ */
+export const GeneratedOpenFeatureClient = (props?: FeatureClientProps): PropertyDecorator & ParameterDecorator =>
+  Inject(getOpenFeatureGeneratedClientToken(props?.domain));
+
+/**
+ * GeneratedOpenFeatureModule is a generated typesafe NestJS wrapper for OpenFeature Server-SDK.
+ */
+@Module({})
+export class GeneratedOpenFeatureModule extends OpenFeatureModule {
+  static override forRoot({ useGlobalInterceptor = true, ...options }: OpenFeatureModuleOptions): DynamicModule {
+    const module = super.forRoot({ useGlobalInterceptor, ...options });
+
+    const clientValueProviders: NestFactoryProvider<GeneratedClient>[] = [
+      {
+        provide: getOpenFeatureGeneratedClientToken(),
+        useFactory: () => getGeneratedClient(),
+      },
+    ];
+
+    if (options?.providers) {
+      const domainClientProviders: NestFactoryProvider<GeneratedClient>[] = Object.keys(options.providers).map(
+        (domain) => ({
+          provide: getOpenFeatureGeneratedClientToken(domain),
+          useFactory: () => getGeneratedClient(domain),
+        }),
+      );
+
+      clientValueProviders.push(...domainClientProviders);
+    }
+
+    return {
+      ...module,
+      providers: module.providers ? [...module.providers, ...clientValueProviders] : clientValueProviders,
+      exports: module.exports ? [...module.exports, ...clientValueProviders] : clientValueProviders,
+    };
+  }
+}
+
+/**
+ * Options for injecting a typed feature flag into a route handler.
+ */
+interface TypedFeatureProps {
+  /**
+   * The domain of the OpenFeature client, if a domain scoped client should be used.
+   * @see {@link OpenFeature#getClient}
+   */
+  domain?: string;
+  /**
+   * The {@link EvaluationContext} for evaluating the feature flag.
+   * @see {@link OpenFeature#getClient}
+   */
+  context?: EvaluationContext;
+}
+
+
+/**
+ * Gets the {@link EvaluationDetails} for `discountPercentage` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `discountPercentage`
+ * - description: `Discount percentage applied to purchases.`
+ * - default value: `0.15`
+ * - type: `number`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @DiscountPercentage()
+ *     discountPercentage: Observable<EvaluationDetails<number>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function DiscountPercentage(props?: TypedFeatureProps): ParameterDecorator {
+  return NumberFeatureFlag({ flagKey: "discountPercentage", defaultValue: 0.15, ...props });
+}
+
+/**
+ * Gets the {@link EvaluationDetails} for `enableFeatureA` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `enableFeatureA`
+ * - description: `Controls whether Feature A is enabled.`
+ * - default value: `false`
+ * - type: `boolean`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @EnableFeatureA()
+ *     enableFeatureA: Observable<EvaluationDetails<boolean>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function EnableFeatureA(props?: TypedFeatureProps): ParameterDecorator {
+  return BooleanFeatureFlag({ flagKey: "enableFeatureA", defaultValue: false, ...props });
+}
+
+/**
+ * Gets the {@link EvaluationDetails} for `greetingMessage` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `greetingMessage`
+ * - description: `The message to use for greeting users.`
+ * - default value: `Hello there!`
+ * - type: `string`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @GreetingMessage()
+ *     greetingMessage: Observable<EvaluationDetails<string>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function GreetingMessage(props?: TypedFeatureProps): ParameterDecorator {
+  return StringFeatureFlag({ flagKey: "greetingMessage", defaultValue: "Hello there!", ...props });
+}
+
+/**
+ * Gets the {@link EvaluationDetails} for `themeCustomization` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `themeCustomization`
+ * - description: `Allows customization of theme colors.`
+ * - default value: `{"primaryColor":"#007bff","secondaryColor":"#6c757d"}`
+ * - type: `JsonValue`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @ThemeCustomization()
+ *     themeCustomization: Observable<EvaluationDetails<JsonValue>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function ThemeCustomization(props?: TypedFeatureProps): ParameterDecorator {
+  return ObjectFeatureFlag({ flagKey: "themeCustomization", defaultValue: {"primaryColor":"#007bff","secondaryColor":"#6c757d"}, ...props });
+}
+
+/**
+ * Gets the {@link EvaluationDetails} for `usernameMaxLength` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `usernameMaxLength`
+ * - description: `Maximum allowed length for usernames.`
+ * - default value: `50`
+ * - type: `number`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @UsernameMaxLength()
+ *     usernameMaxLength: Observable<EvaluationDetails<number>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function UsernameMaxLength(props?: TypedFeatureProps): ParameterDecorator {
+  return NumberFeatureFlag({ flagKey: "usernameMaxLength", defaultValue: 50, ...props });
+}

internal/cmd/testdata/success_nodejs.golden

@@ -3,6 +3,7 @@ import {
   OpenFeature,
   stringOrUndefined,
   objectOrUndefined,
+  JsonValue,
 } from "@openfeature/server-sdk";
 import type {
   EvaluationContext,
@@ -101,6 +102,36 @@ export interface GeneratedClient {
   */
   greetingMessageDetails(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<string>>;
 
+  /**
+  * Allows customization of theme colors.
+  * 
+  * **Details:**
+  * - flag key: `themeCustomization`
+  * - default value: `{"primaryColor":"#007bff","secondaryColor":"#6c757d"}`
+  * - type: `JsonValue`
+  * 
+  * Performs a flag evaluation that returns a object.
+  * @param {EvaluationContext} context The evaluation context used on an individual flag evaluation
+  * @param {FlagEvaluationOptions} options Additional flag evaluation options
+  * @returns {Promise<JsonValue>} Flag evaluation response
+  */
+  themeCustomization(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<JsonValue>;
+
+  /**
+  * Allows customization of theme colors.
+  * 
+  * **Details:**
+  * - flag key: `themeCustomization`
+  * - default value: `{"primaryColor":"#007bff","secondaryColor":"#6c757d"}`
+  * - type: `JsonValue`
+  * 
+  * Performs a flag evaluation that a returns an evaluation details object.
+  * @param {EvaluationContext} context The evaluation context used on an individual flag evaluation
+  * @param {FlagEvaluationOptions} options Additional flag evaluation options
+  * @returns {Promise<EvaluationDetails<JsonValue>>} Flag evaluation details response
+  */
+  themeCustomizationDetails(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<JsonValue>>;
+
   /**
   * Maximum allowed length for usernames.
   * 
@@ -185,6 +216,14 @@ export function getGeneratedClient(domainOrContext?: string | EvaluationContext,
       return client.getStringDetails("greetingMessage", "Hello there!", context, options);
     },
 
+    themeCustomization: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<JsonValue> => {
+      return client.getObjectValue("themeCustomization", {"primaryColor":"#007bff","secondaryColor":"#6c757d"}, context, options);
+    },
+
+    themeCustomizationDetails: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<JsonValue>> => {
+      return client.getObjectDetails("themeCustomization", {"primaryColor":"#007bff","secondaryColor":"#6c757d"}, context, options);
+    },
+
     usernameMaxLength: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<number> => {
       return client.getNumberValue("usernameMaxLength", 50, context, options);
     },

internal/cmd/testdata/success_python.golden

@@ -0,0 +1,472 @@
+# AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+from typing import Optional
+
+from openfeature.client import OpenFeatureClient
+from openfeature.evaluation_context import EvaluationContext 
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagEvaluationOptions
+from openfeature.hook import Hook
+
+
+class GeneratedClient:
+    def __init__(
+        self,
+        client: OpenFeatureClient,
+    ) -> None:
+        self.client = client
+
+    def discount_percentage(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> float:
+        """
+        Discount percentage applied to purchases.
+
+        **Details:**
+        - flag key: `discountPercentage`
+        - default value: `0.15`
+        - type: `float`
+        
+        Performs a flag evaluation that returns a `float`.
+        """
+        return self.client.get_float_value(
+            flag_key="discountPercentage",
+            default_value=0.15,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def discount_percentage_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Discount percentage applied to purchases.
+
+        **Details:**
+        - flag key: `discountPercentage`
+        - default value: `0.15`
+        - type: `float`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.get_float_details(
+            flag_key="discountPercentage",
+            default_value=0.15,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def discount_percentage_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> float:
+        """
+        Discount percentage applied to purchases.
+
+        **Details:**
+        - flag key: `discountPercentage`
+        - default value: `0.15`
+        - type: `float`
+        
+        Performs a flag evaluation asynchronously and returns a `float`.
+        """
+        return await self.client.get_float_value_async(
+            flag_key="discountPercentage",
+            default_value=0.15,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def discount_percentage_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Discount percentage applied to purchases.
+
+        **Details:**
+        - flag key: `discountPercentage`
+        - default value: `0.15`
+        - type: `float`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.get_float_details_async(
+            flag_key="discountPercentage",
+            default_value=0.15,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+
+    def enable_feature_a(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> bool:
+        """
+        Controls whether Feature A is enabled.
+
+        **Details:**
+        - flag key: `enableFeatureA`
+        - default value: `False`
+        - type: `bool`
+        
+        Performs a flag evaluation that returns a `bool`.
+        """
+        return self.client.get_boolean_value(
+            flag_key="enableFeatureA",
+            default_value=False,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def enable_feature_a_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Controls whether Feature A is enabled.
+
+        **Details:**
+        - flag key: `enableFeatureA`
+        - default value: `False`
+        - type: `bool`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.get_boolean_details(
+            flag_key="enableFeatureA",
+            default_value=False,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def enable_feature_a_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> bool:
+        """
+        Controls whether Feature A is enabled.
+
+        **Details:**
+        - flag key: `enableFeatureA`
+        - default value: `False`
+        - type: `bool`
+        
+        Performs a flag evaluation asynchronously and returns a `bool`.
+        """
+        return await self.client.get_boolean_value_async(
+            flag_key="enableFeatureA",
+            default_value=False,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def enable_feature_a_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Controls whether Feature A is enabled.
+
+        **Details:**
+        - flag key: `enableFeatureA`
+        - default value: `False`
+        - type: `bool`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.get_boolean_details_async(
+            flag_key="enableFeatureA",
+            default_value=False,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+
+    def greeting_message(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> str:
+        """
+        The message to use for greeting users.
+
+        **Details:**
+        - flag key: `greetingMessage`
+        - default value: `Hello there!`
+        - type: `str`
+        
+        Performs a flag evaluation that returns a `str`.
+        """
+        return self.client.get_string_value(
+            flag_key="greetingMessage",
+            default_value="Hello there!",
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def greeting_message_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        The message to use for greeting users.
+
+        **Details:**
+        - flag key: `greetingMessage`
+        - default value: `Hello there!`
+        - type: `str`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.get_string_details(
+            flag_key="greetingMessage",
+            default_value="Hello there!",
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def greeting_message_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> str:
+        """
+        The message to use for greeting users.
+
+        **Details:**
+        - flag key: `greetingMessage`
+        - default value: `Hello there!`
+        - type: `str`
+        
+        Performs a flag evaluation asynchronously and returns a `str`.
+        """
+        return await self.client.get_string_value_async(
+            flag_key="greetingMessage",
+            default_value="Hello there!",
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def greeting_message_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        The message to use for greeting users.
+
+        **Details:**
+        - flag key: `greetingMessage`
+        - default value: `Hello there!`
+        - type: `str`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.get_string_details_async(
+            flag_key="greetingMessage",
+            default_value="Hello there!",
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+
+    def theme_customization(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> object:
+        """
+        Allows customization of theme colors.
+
+        **Details:**
+        - flag key: `themeCustomization`
+        - default value: `{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}`
+        - type: `object`
+        
+        Performs a flag evaluation that returns a `object`.
+        """
+        return self.client.get_object_value(
+            flag_key="themeCustomization",
+            default_value={"primaryColor": "#007bff", "secondaryColor": "#6c757d"},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def theme_customization_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Allows customization of theme colors.
+
+        **Details:**
+        - flag key: `themeCustomization`
+        - default value: `{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}`
+        - type: `object`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.get_object_details(
+            flag_key="themeCustomization",
+            default_value={"primaryColor": "#007bff", "secondaryColor": "#6c757d"},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def theme_customization_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> object:
+        """
+        Allows customization of theme colors.
+
+        **Details:**
+        - flag key: `themeCustomization`
+        - default value: `{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}`
+        - type: `object`
+        
+        Performs a flag evaluation asynchronously and returns a `object`.
+        """
+        return await self.client.get_object_value_async(
+            flag_key="themeCustomization",
+            default_value={"primaryColor": "#007bff", "secondaryColor": "#6c757d"},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def theme_customization_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Allows customization of theme colors.
+
+        **Details:**
+        - flag key: `themeCustomization`
+        - default value: `{"primaryColor": "#007bff", "secondaryColor": "#6c757d"}`
+        - type: `object`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.get_object_details_async(
+            flag_key="themeCustomization",
+            default_value={"primaryColor": "#007bff", "secondaryColor": "#6c757d"},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+
+    def username_max_length(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> int:
+        """
+        Maximum allowed length for usernames.
+
+        **Details:**
+        - flag key: `usernameMaxLength`
+        - default value: `50`
+        - type: `int`
+        
+        Performs a flag evaluation that returns a `int`.
+        """
+        return self.client.get_integer_value(
+            flag_key="usernameMaxLength",
+            default_value=50,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def username_max_length_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Maximum allowed length for usernames.
+
+        **Details:**
+        - flag key: `usernameMaxLength`
+        - default value: `50`
+        - type: `int`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.get_integer_details(
+            flag_key="usernameMaxLength",
+            default_value=50,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def username_max_length_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> int:
+        """
+        Maximum allowed length for usernames.
+
+        **Details:**
+        - flag key: `usernameMaxLength`
+        - default value: `50`
+        - type: `int`
+        
+        Performs a flag evaluation asynchronously and returns a `int`.
+        """
+        return await self.client.get_integer_value_async(
+            flag_key="usernameMaxLength",
+            default_value=50,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def username_max_length_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        Maximum allowed length for usernames.
+
+        **Details:**
+        - flag key: `usernameMaxLength`
+        - default value: `50`
+        - type: `int`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.get_integer_details_async(
+            flag_key="usernameMaxLength",
+            default_value=50,
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+
+
+def get_generated_client(
+    client: Optional[OpenFeatureClient] = None,
+    domain: Optional[str] = None,
+    version: Optional[str] = None,
+    context: Optional[EvaluationContext] = None,
+    hooks: Optional[list[Hook]] = None,
+) -> GeneratedClient:
+    if not client:
+        client = OpenFeatureClient(
+            domain=domain,
+            version=version,
+            context=context,
+            hooks=hooks,
+        )
+    return GeneratedClient(client)

internal/cmd/testdata/success_react.golden

@@ -5,6 +5,7 @@ import {
   type ReactFlagEvaluationNoSuspenseOptions,
   useFlag,
   useSuspenseFlag,
+  JsonValue
 } from "@openfeature/react-sdk";
 
 /**
@@ -88,6 +89,33 @@ export const useSuspenseGreetingMessage = (options?: ReactFlagEvaluationNoSuspen
   return useSuspenseFlag("greetingMessage", "Hello there!", options);
 };
 
+/**
+* Allows customization of theme colors.
+* 
+* **Details:**
+* - flag key: `themeCustomization`
+* - default value: `{"primaryColor":"#007bff","secondaryColor":"#6c757d"}`
+* - type: `JsonValue`
+*/
+export const useThemeCustomization = (options?: ReactFlagEvaluationOptions) => {
+  return useFlag("themeCustomization", {"primaryColor":"#007bff","secondaryColor":"#6c757d"}, options);
+};
+
+/**
+* Allows customization of theme colors.
+* 
+* **Details:**
+* - flag key: `themeCustomization`
+* - default value: `{"primaryColor":"#007bff","secondaryColor":"#6c757d"}`
+* - type: `JsonValue`
+*
+* Equivalent to useFlag with options: `{ suspend: true }`
+* @experimental — Suspense is an experimental feature subject to change in future versions.
+*/
+export const useSuspenseThemeCustomization = (options?: ReactFlagEvaluationNoSuspenseOptions) => {
+  return useSuspenseFlag("themeCustomization", {"primaryColor":"#007bff","secondaryColor":"#6c757d"}, options);
+};
+
 /**
 * Maximum allowed length for usernames.
 * 

internal/cmd/testdata/target_manifest.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "https://raw.githubusercontent.com/open-feature/cli/refs/heads/main/schema/v0/flag_manifest.json",
+  "flags": {
+    "darkMode": {
+      "flagType": "boolean",
+      "description": "Enable dark mode for the application",
+      "defaultValue": true
+    },
+    "backgroundColor": {
+      "flagType": "string",
+      "description": "Background color for the application",
+      "defaultValue": "black"
+    },
+    "welcomeMessage": {
+      "flagType": "string",
+      "description": "Welcome message to display",
+      "defaultValue": "Hello, Welcome to OpenFeature!"
+    }
+  }
+}

internal/config/flags.go

@@ -6,19 +6,23 @@ import (
 
 // Flag name constants to avoid duplication
 const (
-	DebugFlagName     = "debug"
+	DebugFlagName       = "debug"
-	ManifestFlagName  = "manifest"
+	ManifestFlagName    = "manifest"
-	OutputFlagName    = "output"
+	OutputFlagName      = "output"
-	NoInputFlagName   = "no-input"
+	NoInputFlagName     = "no-input"
-	GoPackageFlagName = "package-name"
+	GoPackageFlagName   = "package-name"
-	OverrideFlagName  = "override"
+	CSharpNamespaceName = "namespace"
+	OverrideFlagName    = "override"
+	JavaPackageFlagName = "package-name"
 )
 
 // Default values for flags
 const (
-	DefaultManifestPath  = "flags.json"
+	DefaultManifestPath    = "flags.json"
-	DefaultOutputPath    = ""
+	DefaultOutputPath      = ""
-	DefaultGoPackageName = "openfeature"
+	DefaultGoPackageName   = "openfeature"
+	DefaultCSharpNamespace = "OpenFeature"
+	DefaultJavaPackageName = "com.example.openfeature"
 )
 
 // AddRootFlags adds the common flags to the given command
@@ -38,6 +42,16 @@ func AddGoGenerateFlags(cmd *cobra.Command) {
 	cmd.Flags().String(GoPackageFlagName, DefaultGoPackageName, "Name of the generated Go package")
 }
 
+// AddCSharpGenerateFlags adds the C# generator specific flags to the given command
+func AddCSharpGenerateFlags(cmd *cobra.Command) {
+	cmd.Flags().String(CSharpNamespaceName, DefaultCSharpNamespace, "Namespace for the generated C# code")
+}
+
+// AddJavaGenerateFlags adds the Java generator specific flags to the given command
+func AddJavaGenerateFlags(cmd *cobra.Command) {
+	cmd.Flags().String(JavaPackageFlagName, DefaultJavaPackageName, "Name of the generated Java package")
+}
+
 // AddInitFlags adds the init command specific flags
 func AddInitFlags(cmd *cobra.Command) {
 	cmd.Flags().Bool(OverrideFlagName, false, "Override an existing configuration")
@@ -61,6 +75,18 @@ func GetGoPackageName(cmd *cobra.Command) string {
 	return goPackageName
 }
 
+// GetCSharpNamespace gets the C# namespace from the given command
+func GetCSharpNamespace(cmd *cobra.Command) string {
+	namespace, _ := cmd.Flags().GetString(CSharpNamespaceName)
+	return namespace
+}
+
+// GetJavaPackageName gets the Java package name from the given command
+func GetJavaPackageName(cmd *cobra.Command) string {
+	javaPackageName, _ := cmd.Flags().GetString(JavaPackageFlagName)
+	return javaPackageName
+}
+
 // GetNoInput gets the no-input flag from the given command
 func GetNoInput(cmd *cobra.Command) bool {
 	noInput, _ := cmd.Flags().GetBool(NoInputFlagName)

internal/flagset/flagset.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"sort"
+	"strings"
 
 	"github.com/open-feature/cli/internal/filesystem"
 	"github.com/open-feature/cli/internal/manifest"
@@ -27,24 +28,24 @@ const (
 func (f FlagType) String() string {
 	switch f {
 	case IntType:
-			return "int"
+		return "int"
 	case FloatType:
-			return "float"
+		return "float"
 	case BoolType:
-			return "bool"
+		return "bool"
 	case StringType:
-			return "string"
+		return "string"
 	case ObjectType:
-			return "object"
+		return "object"
 	default:
-			return "unknown"
+		return "unknown"
 	}
 }
 
 type Flag struct {
-	Key string
+	Key          string
-	Type FlagType
+	Type         FlagType
-	Description string
+	Description  string
 	DefaultValue any
 }
 
@@ -64,7 +65,7 @@ func Load(manifestPath string) (*Flagset, error) {
 	if err != nil {
 		return nil, err
 	} else if len(validationErrors) > 0 {
-		return nil, fmt.Errorf("validation failed: %v", validationErrors)
+		return nil, errors.New(FormatValidationError(validationErrors))
 	}
 
 	var flagset Flagset
@@ -90,9 +91,9 @@ func (fs *Flagset) Filter(unsupportedFlagTypes map[FlagType]bool) *Flagset {
 func (fs *Flagset) UnmarshalJSON(data []byte) error {
 	var manifest struct {
 		Flags map[string]struct {
-			FlagType     string      `json:"flagType"`
+			FlagType     string `json:"flagType"`
-			Description  string      `json:"description"`
+			Description  string `json:"description"`
-			DefaultValue any         `json:"defaultValue"`
+			DefaultValue any    `json:"defaultValue"`
 		} `json:"flags"`
 	}
 
@@ -132,3 +133,43 @@ func (fs *Flagset) UnmarshalJSON(data []byte) error {
 
 	return nil
 }
+func FormatValidationError(issues []manifest.ValidationError) string {
+	var sb strings.Builder
+	sb.WriteString("flag manifest validation failed:\n\n")
+
+	// Group messages by flag path
+	grouped := make(map[string]struct {
+		flagType string
+		messages []string
+	})
+
+	for _, issue := range issues {
+		entry := grouped[issue.Path]
+		entry.flagType = issue.Type
+		entry.messages = append(entry.messages, issue.Message)
+		grouped[issue.Path] = entry
+	}
+
+	// Sort paths for consistent output
+	paths := make([]string, 0, len(grouped))
+	for path := range grouped {
+		paths = append(paths, path)
+	}
+	sort.Strings(paths)
+
+	// Format each row
+	for _, path := range paths {
+		entry := grouped[path]
+		flagType := entry.flagType
+		if flagType == "" {
+			flagType = "missing"
+		}
+		sb.WriteString(fmt.Sprintf(
+			"- flagType: %s\n  flagPath: %s\n  errors:\n    ~ %s\n  \tSuggestions:\n      \t- flagType: boolean\n      \t- defaultValue: true\n\n",
+			flagType,
+			path,
+			strings.Join(entry.messages, "\n    ~ "),
+		))
+	}
+	return sb.String()
+}

internal/flagset/flagset_test.go

@@ -0,0 +1,29 @@
+package flagset
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/open-feature/cli/internal/manifest"
+)
+
+// Sample test for FormatValidationError
+func TestFormatValidationError_SortsByPath(t *testing.T) {
+	issues := []manifest.ValidationError{
+		{Path: "zeta.flag", Type: "boolean", Message: "must not be empty"},
+		{Path: "alpha.flag", Type: "string", Message: "invalid value"},
+		{Path: "beta.flag", Type: "number", Message: "must be greater than zero"},
+	}
+
+	output := FormatValidationError(issues)
+
+	// The output should mention 'alpha.flag' before 'beta.flag', and 'beta.flag' before 'zeta.flag'
+	alphaIdx := strings.Index(output, "flagPath: alpha.flag")
+	betaIdx := strings.Index(output, "flagPath: beta.flag")
+	zetaIdx := strings.Index(output, "flagPath: zeta.flag")
+
+	if !(alphaIdx < betaIdx && betaIdx < zetaIdx) {
+		t.Errorf("flag paths are not sorted: alphaIdx=%d, betaIdx=%d, zetaIdx=%d\nOutput:\n%s",
+			alphaIdx, betaIdx, zetaIdx, output)
+	}
+}

internal/generators/csharp/csharp.go

@@ -0,0 +1,144 @@
+package csharp
+
+import (
+	_ "embed"
+	"fmt"
+	"maps"
+	"slices"
+	"strings"
+	"text/template"
+
+	"github.com/open-feature/cli/internal/flagset"
+	"github.com/open-feature/cli/internal/generators"
+)
+
+type CsharpGenerator struct {
+	generators.CommonGenerator
+}
+
+type Params struct {
+	// Add C# specific parameters here if needed
+	Namespace string
+}
+
+//go:embed csharp.tmpl
+var csharpTmpl string
+
+func openFeatureType(t flagset.FlagType) string {
+	switch t {
+	case flagset.IntType:
+		return "int"
+	case flagset.FloatType:
+		return "double" // .NET uses double, not float
+	case flagset.BoolType:
+		return "bool"
+	case flagset.StringType:
+		return "string"
+	case flagset.ObjectType:
+		return "object"
+	default:
+		return ""
+	}
+}
+
+func formatDefaultValue(flag flagset.Flag) string {
+	switch flag.Type {
+	case flagset.StringType:
+		return fmt.Sprintf("\"%s\"", flag.DefaultValue)
+	case flagset.BoolType:
+		if flag.DefaultValue == true {
+			return "true"
+		}
+		return "false"
+	default:
+		return fmt.Sprintf("%v", flag.DefaultValue)
+	}
+}
+
+func toCSharpDict(value any) string {
+	assertedMap, ok := value.(map[string]any)
+	if !ok {
+		return "null"
+	}
+
+	keys := slices.Sorted(maps.Keys(assertedMap))
+
+	var builder strings.Builder
+	builder.WriteString("new Value(Structure.Builder()")
+
+	for _, key := range keys {
+		val := assertedMap[key]
+
+		builder.WriteString(fmt.Sprintf(".Set(%q, %s)", key, formatNestedValue(val)))
+	}
+	builder.WriteString(".Build())")
+
+	return builder.String()
+}
+
+func formatNestedValue(value any) string {
+	switch val := value.(type) {
+	case string:
+		flag := flagset.Flag{
+			Type:         flagset.StringType,
+			DefaultValue: val,
+		}
+		return formatDefaultValue(flag)
+	case bool:
+		flag := flagset.Flag{
+			Type:         flagset.BoolType,
+			DefaultValue: val,
+		}
+		return formatDefaultValue(flag)
+	case int, int64:
+		flag := flagset.Flag{
+			Type:         flagset.IntType,
+			DefaultValue: val,
+		}
+		return formatDefaultValue(flag)
+	case float64:
+		flag := flagset.Flag{
+			Type:         flagset.FloatType,
+			DefaultValue: val,
+		}
+		return formatDefaultValue(flag)
+	case map[string]any:
+		return toCSharpDict(val)
+	case []any:
+		var sliceBuilder strings.Builder
+		sliceBuilder.WriteString("new Value(new List<Value>{")
+		for index, elem := range val {
+			if index > 0 {
+				sliceBuilder.WriteString(", ")
+			}
+
+			sliceBuilder.WriteString(formatNestedValue(elem))
+		}
+		sliceBuilder.WriteString("})")
+		return sliceBuilder.String()
+	default:
+		return fmt.Sprintf("new Value(%s)", val)
+	}
+}
+
+func (g *CsharpGenerator) Generate(params *generators.Params[Params]) error {
+	funcs := template.FuncMap{
+		"OpenFeatureType":    openFeatureType,
+		"FormatDefaultValue": formatDefaultValue,
+		"ToCSharpDict":       toCSharpDict,
+	}
+
+	newParams := &generators.Params[any]{
+		OutputPath: params.OutputPath,
+		Custom:     params.Custom,
+	}
+
+	return g.GenerateFile(funcs, csharpTmpl, newParams, "OpenFeature.g.cs")
+}
+
+// NewGenerator creates a generator for C#.
+func NewGenerator(fs *flagset.Flagset) *CsharpGenerator {
+	return &CsharpGenerator{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
+	}
+}

internal/generators/csharp/csharp.tmpl

@@ -0,0 +1,149 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
+using OpenFeature;
+using OpenFeature.Model;
+
+namespace {{ if .Params.Custom.Namespace }}{{ .Params.Custom.Namespace }}{{ else }}OpenFeatureGenerated{{ end }}
+{
+    /// <summary>
+    /// Service collection extensions for OpenFeature
+    /// </summary>
+    public static class OpenFeatureServiceExtensions
+    {
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient())
+                .AddSingleton<GeneratedClient>();
+        }
+
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client for a specific domain
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services, string domain)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient(domain))
+                .AddSingleton<GeneratedClient>();
+        }
+    }
+
+    /// <summary>
+    /// Generated OpenFeature client for typesafe flag access
+    /// </summary>
+    public class GeneratedClient
+    {
+        private readonly IFeatureClient _client;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneratedClient"/> class.
+        /// </summary>
+        /// <param name="client">The OpenFeature client to use for flag evaluations.</param>
+        public GeneratedClient(IFeatureClient client)
+        {
+            _client = client ?? throw new ArgumentNullException(nameof(client));
+        }
+
+        {{- range .Flagset.Flags }}
+        /// <summary>
+        /// {{ .Description }}
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: {{ .Key }}</para>
+        /// <para>Default value: {{ if eq (.Type | OpenFeatureType) "object" }}{{ .DefaultValue | ToCSharpDict }}{{ else }}{{ .DefaultValue }}{{ end }}</para>
+        /// <para>Type: {{ .Type | OpenFeatureType }}</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<{{ if eq (.Type | OpenFeatureType) "object" }}Value{{ else }}{{ .Type | OpenFeatureType }}{{ end }}> {{ .Key | ToPascal }}Async(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            {{- if eq .Type 1 }}
+            return await _client.GetIntegerValueAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 2 }}
+            return await _client.GetDoubleValueAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 3 }}
+            return await _client.GetBooleanValueAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 4 }}
+            return await _client.GetStringValueAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 5 }}
+            return await _client.GetObjectValueAsync("{{ .Key }}", {{ if eq (.Type | OpenFeatureType) "object" }}{{ .DefaultValue | ToCSharpDict }}{{ else }}{{ . | FormatDefaultValue }}{{ end }}, evaluationContext, options);
+            {{- else }}
+            throw new NotSupportedException("Unsupported flag type");
+            {{- end }}
+        }
+
+        /// <summary>
+        /// {{ .Description }}
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: {{ .Key }}</para>
+        /// <para>Default value: {{ if eq (.Type | OpenFeatureType) "object" }}{{ .DefaultValue | ToCSharpDict }}{{ else }}{{ .DefaultValue }}{{ end }}</para>
+        /// <para>Type: {{ .Type | OpenFeatureType }}</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<{{ if eq (.Type | OpenFeatureType) "object" }}Value{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>> {{ .Key | ToPascal }}DetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            {{- if eq .Type 1 }}
+            return await _client.GetIntegerDetailsAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 2 }}
+            return await _client.GetDoubleDetailsAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 3 }}
+            return await _client.GetBooleanDetailsAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 4 }}
+            return await _client.GetStringDetailsAsync("{{ .Key }}", {{ . | FormatDefaultValue }}, evaluationContext, options);
+            {{- else if eq .Type 5 }}
+            return await _client.GetObjectDetailsAsync("{{ .Key }}", {{ if eq (.Type | OpenFeatureType) "object" }}{{ .DefaultValue | ToCSharpDict }}{{ else }}{{ . | FormatDefaultValue }}{{ end }}, evaluationContext, options);
+            {{- else }}
+            throw new NotSupportedException("Unsupported flag type");
+            {{- end }}
+        }
+        {{ end }}
+
+        /// <summary>
+        /// Creates a new GeneratedClient using the default OpenFeature client
+        /// </summary>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient()
+        {
+            return new GeneratedClient(Api.Instance.GetClient());
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client with context
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <param name="evaluationContext">Default context to use for evaluations</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain, EvaluationContext? evaluationContext = null)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+    }
+}

internal/generators/func.go

@@ -17,16 +17,16 @@ func defaultFuncs() template.FuncMap {
 		"ToPascal": strcase.ToCamel,
 		// Remapping ToLowerCamel to ToCamel to match the expected behavior
 		// Ref: See above
-		"ToCamel": strcase.ToLowerCamel,
+		"ToCamel":          strcase.ToLowerCamel,
-		"ToKebab": strcase.ToKebab,
+		"ToKebab":          strcase.ToKebab,
 		"ToScreamingKebab": strcase.ToScreamingKebab,
-		"ToSnake": strcase.ToSnake,
+		"ToSnake":          strcase.ToSnake,
 		"ToScreamingSnake": strcase.ToScreamingSnake,
-		"ToUpper": strings.ToUpper,
+		"ToUpper":          strings.ToUpper,
-		"ToLower": strings.ToLower,
+		"ToLower":          strings.ToLower,
-		"Title": cases.Title,
+		"Title":            cases.Title,
-		"Quote": strconv.Quote,
+		"Quote":            strconv.Quote,
-		"QuoteString": func (input any) any {
+		"QuoteString": func(input any) any {
 			if str, ok := input.(string); ok {
 				return strconv.Quote(str)
 			}

internal/generators/golang/golang.go

@@ -2,7 +2,12 @@ package golang
 
 import (
 	_ "embed"
+	"encoding/json"
+	"fmt"
+	"maps"
+	"slices"
 	"sort"
+	"strings"
 	"text/template"
 
 	"github.com/open-feature/cli/internal/flagset"
@@ -30,6 +35,8 @@ func openFeatureType(t flagset.FlagType) string {
 		return "Boolean"
 	case flagset.StringType:
 		return "String"
+	case flagset.ObjectType:
+		return "Object"
 	default:
 		return ""
 	}
@@ -45,6 +52,8 @@ func typeString(flagType flagset.FlagType) string {
 		return "bool"
 	case flagset.FloatType:
 		return "float64"
+	case flagset.ObjectType:
+		return "map[string]any"
 	default:
 		return ""
 	}
@@ -60,11 +69,68 @@ func supportImports(flags []flagset.Flag) []string {
 	return res
 }
 
+func toMapLiteral(value any) string {
+	assertedMap, ok := value.(map[string]any)
+	if !ok {
+		return "nil"
+	}
+
+	// To have a determined order of the object for comparison
+	keys := slices.Sorted(maps.Keys(assertedMap))
+
+	var builder strings.Builder
+	builder.WriteString("map[string]any{")
+
+	for index, key := range keys {
+		if index > 0 {
+			builder.WriteString(", ")
+		}
+		val := assertedMap[key]
+
+		builder.WriteString(fmt.Sprintf(`%q: %s`, key, formatNestedValue(val)))
+	}
+
+	builder.WriteString("}")
+	return builder.String()
+}
+
+func formatNestedValue(value any) string {
+	switch val := value.(type) {
+	case string:
+		return fmt.Sprintf("%q", val)
+	case bool:
+		return fmt.Sprintf("%t", val)
+	case int, int64, float64:
+		return fmt.Sprintf("%v", val)
+	case map[string]any:
+		return toMapLiteral(val)
+	case []any:
+		var sliceBuilder strings.Builder
+		sliceBuilder.WriteString("[]any{")
+		for index, elem := range val {
+			if index > 0 {
+				sliceBuilder.WriteString(", ")
+			}
+
+			sliceBuilder.WriteString(formatNestedValue(elem))
+		}
+		sliceBuilder.WriteString("}")
+		return sliceBuilder.String()
+	default:
+		jsonBytes, err := json.Marshal(val)
+		if err != nil {
+			return "nil"
+		}
+		return fmt.Sprintf("%q", string(jsonBytes))
+	}
+}
+
 func (g *GolangGenerator) Generate(params *generators.Params[Params]) error {
 	funcs := template.FuncMap{
 		"SupportImports":  supportImports,
 		"OpenFeatureType": openFeatureType,
 		"TypeString":      typeString,
+		"ToMapLiteral":    toMapLiteral,
 	}
 
 	newParams := &generators.Params[any]{
@@ -80,8 +146,6 @@ func (g *GolangGenerator) Generate(params *generators.Params[Params]) error {
 // NewGenerator creates a generator for Go.
 func NewGenerator(fs *flagset.Flagset) *GolangGenerator {
 	return &GolangGenerator{
-		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
-			flagset.ObjectType: true,
-		}),
 	}
 }

internal/generators/golang/golang.tmpl

@@ -15,6 +15,8 @@ type IntProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext
 type IntProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.IntEvaluationDetails, error)
 type StringProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext) (string, error)
 type StringProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.StringEvaluationDetails, error)
+type ObjectProvider func(ctx context.Context, evalCtx openfeature.EvaluationContext) (any, error)
+type ObjectProviderDetails func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.InterfaceEvaluationDetails, error)
 
 var client openfeature.IClient = nil
 
@@ -29,11 +31,11 @@ var {{ .Key | ToPascal }} = struct {
     // the evaluation error, if any, and the evaluation details.
     ValueWithDetails {{ .Type | OpenFeatureType }}ProviderDetails
 }{
-    Value: func(ctx context.Context, evalCtx openfeature.EvaluationContext) ({{ .Type | TypeString }}, error) {
+    Value: func(ctx context.Context, evalCtx openfeature.EvaluationContext) ({{- if eq (.Type | OpenFeatureType)  "Object"}}any{{- else}}{{ .Type | TypeString }}{{- end}}, error) {
-        return client.{{ .Type | OpenFeatureType }}Value(ctx, {{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, evalCtx)
+        return client.{{ .Type | OpenFeatureType }}Value(ctx, {{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType)  "Object" }}{{.DefaultValue | ToMapLiteral }}{{- else }}{{ .DefaultValue | QuoteString }}{{- end}}, evalCtx)
     },
-    ValueWithDetails: func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.{{ .Type | OpenFeatureType }}EvaluationDetails, error){
+    ValueWithDetails: func(ctx context.Context, evalCtx openfeature.EvaluationContext) (openfeature.{{- if eq (.Type | OpenFeatureType)  "Object"}}Interface{{- else }}{{ .Type | OpenFeatureType }}{{- end}}EvaluationDetails, error){
-        return client.{{ .Type | OpenFeatureType }}ValueDetails(ctx, {{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, evalCtx)
+        return client.{{ .Type | OpenFeatureType }}ValueDetails(ctx, {{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType)  "Object" }}{{.DefaultValue | ToMapLiteral }}{{- else }}{{ .DefaultValue | QuoteString }}{{- end}}, evalCtx)
     },
 }
 {{- end}}

internal/generators/java/java.go

@@ -0,0 +1,152 @@
+package java
+
+import (
+	_ "embed"
+	"encoding/json"
+	"fmt"
+	"maps"
+	"slices"
+	"strings"
+	"text/template"
+
+	"github.com/open-feature/cli/internal/flagset"
+	"github.com/open-feature/cli/internal/generators"
+)
+
+type JavaGenerator struct {
+	generators.CommonGenerator
+}
+
+type Params struct {
+	// Add Java parameters here if needed
+	JavaPackage string
+}
+
+//go:embed java.tmpl
+var javaTmpl string
+
+func openFeatureType(t flagset.FlagType) string {
+	switch t {
+	case flagset.IntType:
+		return "Integer"
+	case flagset.FloatType:
+		return "Double" //using Double as per openfeature Java-SDK
+	case flagset.BoolType:
+		return "Boolean"
+	case flagset.StringType:
+		return "String"
+	case flagset.ObjectType:
+		return "Object"
+	default:
+		return ""
+	}
+}
+
+func formatDefaultValueForJava(flag flagset.Flag) string {
+	switch flag.Type {
+	case flagset.StringType:
+		return fmt.Sprintf("\"%s\"", flag.DefaultValue)
+	case flagset.BoolType:
+		if flag.DefaultValue == true {
+			return "true"
+		}
+		return "false"
+	default:
+		return fmt.Sprintf("%v", flag.DefaultValue)
+	}
+}
+
+func toMapLiteral(value any) string {
+	assertedMap, ok := value.(map[string]any)
+	if !ok {
+		return "null"
+	}
+
+	keys := slices.Sorted(maps.Keys(assertedMap))
+
+	var builder strings.Builder
+	builder.WriteString("Map.of(")
+
+	for index, key := range keys {
+		if index > 0 {
+			builder.WriteString(", ")
+		}
+		val := assertedMap[key]
+
+		builder.WriteString(fmt.Sprintf("%q, %s", key, formatNestedValue(val)))
+	}
+	builder.WriteString(")")
+
+	return builder.String()
+}
+
+func formatNestedValue(value any) string {
+	switch val := value.(type) {
+	case string:
+		flag := flagset.Flag{
+			Type:         flagset.StringType,
+			DefaultValue: val,
+		}
+		return formatDefaultValueForJava(flag)
+	case bool:
+		flag := flagset.Flag{
+			Type:         flagset.BoolType,
+			DefaultValue: val,
+		}
+		return formatDefaultValueForJava(flag)
+	case int, int64:
+		flag := flagset.Flag{
+			Type:         flagset.IntType,
+			DefaultValue: val,
+		}
+		return formatDefaultValueForJava(flag)
+	case float64:
+		flag := flagset.Flag{
+			Type:         flagset.FloatType,
+			DefaultValue: val,
+		}
+		return formatDefaultValueForJava(flag)
+	case map[string]any:
+		return toMapLiteral(val)
+	case []any:
+		var sliceBuilder strings.Builder
+		sliceBuilder.WriteString("List.of(")
+		for index, elem := range val {
+			if index > 0 {
+				sliceBuilder.WriteString(", ")
+			}
+
+			sliceBuilder.WriteString(formatNestedValue(elem))
+		}
+		sliceBuilder.WriteString(")")
+		return sliceBuilder.String()
+	default:
+		jsonBytes, err := json.Marshal(val)
+		if err != nil {
+			return "null"
+		}
+		return fmt.Sprintf("%q", string(jsonBytes))
+	}
+}
+
+func (g *JavaGenerator) Generate(params *generators.Params[Params]) error {
+	funcs := template.FuncMap{
+		"OpenFeatureType":    openFeatureType,
+		"FormatDefaultValue": formatDefaultValueForJava,
+		"ToMapLiteral":       toMapLiteral,
+	}
+
+	newParams := &generators.Params[any]{
+		OutputPath: params.OutputPath,
+		Custom:     params.Custom,
+	}
+
+	return g.GenerateFile(funcs, javaTmpl, newParams, "OpenFeature.java")
+}
+
+// NewGenerator creates a generator for Java.
+func NewGenerator(fs *flagset.Flagset) *JavaGenerator {
+	return &JavaGenerator{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
+	}
+}

internal/generators/java/java.tmpl

@@ -0,0 +1,64 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+package {{ .Params.Custom.JavaPackage }};
+
+import dev.openfeature.sdk.Client;
+import dev.openfeature.sdk.EvaluationContext;
+import dev.openfeature.sdk.FlagEvaluationDetails;
+import dev.openfeature.sdk.OpenFeatureAPI;
+
+public final class OpenFeature {
+
+    private OpenFeature() {} // prevent instantiation
+
+    public interface GeneratedClient {
+        {{ range .Flagset.Flags }}
+        /**
+         * {{ .Description }}
+         * Details:
+         * - Flag key: {{ .Key }}
+         * - Type: {{ .Type | OpenFeatureType }}
+         * - Default value: {{ if eq (.Type | OpenFeatureType) "Object" }}{{ .DefaultValue | ToMapLiteral }}{{ else }}{{ .DefaultValue }}{{ end }}
+         * Returns the flag value
+         */
+        {{ .Type | OpenFeatureType }} {{ .Key | ToCamel }}(EvaluationContext ctx);
+
+        /**
+         * {{ .Description }}
+         * Details:
+         * - Flag key: {{ .Key }}
+         * - Type: {{ .Type | OpenFeatureType }}
+         * - Default value: {{ if eq (.Type | OpenFeatureType) "Object" }}{{ .DefaultValue | ToMapLiteral }}{{ else }}{{ .DefaultValue }}{{ end }}
+         * Returns the evaluation details containing the flag value and metadata
+         */
+        FlagEvaluationDetails<{{ .Type | OpenFeatureType }}> {{ .Key | ToCamel }}Details(EvaluationContext ctx);
+        {{ end }}
+    }
+
+    private static final class OpenFeatureGeneratedClient implements GeneratedClient {
+        private final Client client;
+
+        private OpenFeatureGeneratedClient(Client client) {
+            this.client = client;
+        }
+
+        {{ range .Flagset.Flags }}
+        @Override
+        public {{ .Type | OpenFeatureType }} {{ .Key | ToCamel }}(EvaluationContext ctx) {
+            return client.get{{ .Type | OpenFeatureType | ToPascal }}Value("{{ .Key }}", {{ if eq (.Type | OpenFeatureType) "Object" }}{{ .DefaultValue | ToMapLiteral }}{{ else }}{{ . | FormatDefaultValue }}{{ end }}, ctx);
+        }
+
+        @Override
+        public FlagEvaluationDetails<{{ .Type | OpenFeatureType }}> {{ .Key | ToCamel }}Details(EvaluationContext ctx) {
+            return client.get{{ .Type | OpenFeatureType | ToPascal }}Details("{{ .Key }}", {{ if eq (.Type | OpenFeatureType) "Object" }}{{ .DefaultValue | ToMapLiteral }}{{ else }}{{ . | FormatDefaultValue }}{{ end }}, ctx);
+        }
+        {{ end }}
+    }
+
+    public static GeneratedClient getClient() {
+        return new OpenFeatureGeneratedClient(OpenFeatureAPI.getInstance().getClient());
+    }
+
+    public static GeneratedClient getClient(String domain) {
+        return new OpenFeatureGeneratedClient(OpenFeatureAPI.getInstance().getClient(domain));
+    }
+}

internal/generators/manager.go

@@ -12,10 +12,10 @@ type GeneratorCreator func() *cobra.Command
 
 // GeneratorInfo contains metadata about a generator
 type GeneratorInfo struct {
-	Name             string
+	Name        string
-	Description      string
+	Description string
-	Stability        Stability
+	Stability   Stability
-	Creator          GeneratorCreator
+	Creator     GeneratorCreator
 }
 
 // GeneratorManager maintains a registry of available generators
@@ -34,10 +34,10 @@ func NewGeneratorManager() *GeneratorManager {
 func (m *GeneratorManager) Register(cmdCreator func() *cobra.Command) {
 	cmd := cmdCreator()
 	m.generators[cmd.Use] = GeneratorInfo{
-		Name:             cmd.Use,
+		Name:        cmd.Use,
-		Description:      cmd.Short,
+		Description: cmd.Short,
-		Stability:        Stability(cmd.Annotations["stability"]),
+		Stability:   Stability(cmd.Annotations["stability"]),
-		Creator:          cmdCreator,
+		Creator:     cmdCreator,
 	}
 }
 

internal/generators/nestjs/nestjs.go

@@ -0,0 +1,66 @@
+package nestjs
+
+import (
+	_ "embed"
+	"encoding/json"
+	"text/template"
+
+	"github.com/open-feature/cli/internal/flagset"
+	"github.com/open-feature/cli/internal/generators"
+)
+
+type NestJsGenerator struct {
+	generators.CommonGenerator
+}
+
+type Params struct {
+}
+
+//go:embed nestjs.tmpl
+var nestJsTmpl string
+
+func openFeatureType(t flagset.FlagType) string {
+	switch t {
+	case flagset.IntType:
+		fallthrough
+	case flagset.FloatType:
+		return "number"
+	case flagset.BoolType:
+		return "boolean"
+	case flagset.StringType:
+		return "string"
+	case flagset.ObjectType:
+		return "object"
+	default:
+		return ""
+	}
+}
+
+func toJSONString(value any) string {
+	bytes, err := json.Marshal(value)
+	if err != nil {
+		return "{}"
+	}
+	return string(bytes)
+}
+
+func (g *NestJsGenerator) Generate(params *generators.Params[Params]) error {
+	funcs := template.FuncMap{
+		"OpenFeatureType": openFeatureType,
+		"ToJSONString":    toJSONString,
+	}
+
+	newParams := &generators.Params[any]{
+		OutputPath: params.OutputPath,
+		Custom:     Params{},
+	}
+
+	return g.GenerateFile(funcs, nestJsTmpl, newParams, "openfeature-decorators.ts")
+}
+
+// NewGenerator creates a generator for NestJS.
+func NewGenerator(fs *flagset.Flagset) *NestJsGenerator {
+	return &NestJsGenerator{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
+	}
+}

internal/generators/nestjs/nestjs.tmpl

@@ -0,0 +1,121 @@
+import type { DynamicModule, FactoryProvider as NestFactoryProvider } from "@nestjs/common";
+import { Inject, Module } from "@nestjs/common";
+import type { Observable } from "rxjs";
+
+import type {
+  OpenFeature,
+  Client,
+  EvaluationContext,
+  EvaluationDetails,
+  OpenFeatureModuleOptions,
+  JsonValue
+} from "@openfeature/nestjs-sdk";
+import { OpenFeatureModule, BooleanFeatureFlag, StringFeatureFlag, NumberFeatureFlag, ObjectFeatureFlag } from "@openfeature/nestjs-sdk";
+
+import type { GeneratedClient } from "./openfeature";
+import { getGeneratedClient } from "./openfeature";
+
+/**
+ * Returns an injection token for a (domain scoped) generated OpenFeature client.
+ * @param {string} domain The domain of the generated OpenFeature client.
+ * @returns {string} The injection token.
+ */
+export function getOpenFeatureGeneratedClientToken(domain?: string): string {
+  return domain ? `OpenFeatureGeneratedClient_${domain}` : "OpenFeatureGeneratedClient_default";
+}
+
+/**
+ * Options for injecting an OpenFeature client into a constructor.
+ */
+interface FeatureClientProps {
+  /**
+   * The domain of the OpenFeature client, if a domain scoped client should be used.
+   * @see {@link Client.getBooleanDetails}
+   */
+  domain?: string;
+}
+
+/**
+ * Injects a generated typesafe feature client into a constructor or property of a class.
+ * @param {FeatureClientProps} [props] The options for injecting the client.
+ * @returns {PropertyDecorator & ParameterDecorator} The decorator function.
+ */
+export const GeneratedOpenFeatureClient = (props?: FeatureClientProps): PropertyDecorator & ParameterDecorator =>
+  Inject(getOpenFeatureGeneratedClientToken(props?.domain));
+
+/**
+ * GeneratedOpenFeatureModule is a generated typesafe NestJS wrapper for OpenFeature Server-SDK.
+ */
+@Module({})
+export class GeneratedOpenFeatureModule extends OpenFeatureModule {
+  static override forRoot({ useGlobalInterceptor = true, ...options }: OpenFeatureModuleOptions): DynamicModule {
+    const module = super.forRoot({ useGlobalInterceptor, ...options });
+
+    const clientValueProviders: NestFactoryProvider<GeneratedClient>[] = [
+      {
+        provide: getOpenFeatureGeneratedClientToken(),
+        useFactory: () => getGeneratedClient(),
+      },
+    ];
+
+    if (options?.providers) {
+      const domainClientProviders: NestFactoryProvider<GeneratedClient>[] = Object.keys(options.providers).map(
+        (domain) => ({
+          provide: getOpenFeatureGeneratedClientToken(domain),
+          useFactory: () => getGeneratedClient(domain),
+        }),
+      );
+
+      clientValueProviders.push(...domainClientProviders);
+    }
+
+    return {
+      ...module,
+      providers: module.providers ? [...module.providers, ...clientValueProviders] : clientValueProviders,
+      exports: module.exports ? [...module.exports, ...clientValueProviders] : clientValueProviders,
+    };
+  }
+}
+
+/**
+ * Options for injecting a typed feature flag into a route handler.
+ */
+interface TypedFeatureProps {
+  /**
+   * The domain of the OpenFeature client, if a domain scoped client should be used.
+   * @see {@link OpenFeature#getClient}
+   */
+  domain?: string;
+  /**
+   * The {@link EvaluationContext} for evaluating the feature flag.
+   * @see {@link OpenFeature#getClient}
+   */
+  context?: EvaluationContext;
+}
+
+{{ range .Flagset.Flags }}
+/**
+ * Gets the {@link EvaluationDetails} for `{{ .Key }}` from a domain scoped or the default OpenFeature
+ * client and populates the annotated parameter with the {@link EvaluationDetails} wrapped in an {@link Observable}.
+ *
+ * **Details:**
+ * - flag key: `{{ .Key }}`
+ * - description: `{{ .Description }}`
+ * - default value: `{{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue }}{{ end }}`
+ * - type: `{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}`
+ *
+ * Usage:
+ * ```typescript
+ * @Get("/")
+ * public async handleRequest(
+ *     @{{ .Key | ToPascal }}()
+ *     {{ .Key | ToCamel }}: Observable<EvaluationDetails<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>>,
+ * )
+ * ```
+ * @param {TypedFeatureProps} props The options for injecting the feature flag.
+ * @returns {ParameterDecorator} The decorator function.
+ */
+export function {{ .Key | ToPascal }}(props?: TypedFeatureProps): ParameterDecorator {
+  return {{ .Type | OpenFeatureType | ToPascal }}FeatureFlag({ flagKey: {{ .Key | Quote }}, defaultValue: {{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue | QuoteString }}{{ end }}, ...props });
+}
+{{ end -}}

internal/generators/nodejs/nodejs.go

@@ -2,6 +2,7 @@ package nodejs
 
 import (
 	_ "embed"
+	"encoding/json"
 	"text/template"
 
 	"github.com/open-feature/cli/internal/flagset"
@@ -28,14 +29,25 @@ func openFeatureType(t flagset.FlagType) string {
 		return "boolean"
 	case flagset.StringType:
 		return "string"
+	case flagset.ObjectType:
+		return "object"
 	default:
 		return ""
 	}
 }
 
+func toJSONString(value any) string {
+	bytes, err := json.Marshal(value)
+	if err != nil {
+		return "{}"
+	}
+	return string(bytes)
+}
+
 func (g *NodejsGenerator) Generate(params *generators.Params[Params]) error {
 	funcs := template.FuncMap{
 		"OpenFeatureType": openFeatureType,
+		"ToJSONString":    toJSONString,
 	}
 
 	newParams := &generators.Params[any]{
@@ -49,8 +61,6 @@ func (g *NodejsGenerator) Generate(params *generators.Params[Params]) error {
 // NewGenerator creates a generator for NodeJS.
 func NewGenerator(fs *flagset.Flagset) *NodejsGenerator {
 	return &NodejsGenerator{
-		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
-			flagset.ObjectType: true,
-		}),
 	}
 }

internal/generators/nodejs/nodejs.tmpl

@@ -3,6 +3,7 @@ import {
   OpenFeature,
   stringOrUndefined,
   objectOrUndefined,
+  JsonValue,
 } from "@openfeature/server-sdk";
 import type {
   EvaluationContext,
@@ -17,30 +18,30 @@ export interface GeneratedClient {
   * 
   * **Details:**
   * - flag key: `{{ .Key }}`
-  * - default value: `{{ .DefaultValue }}`
+  * - default value: `{{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue }}{{ end }}`
-  * - type: `{{ .Type | OpenFeatureType }}`
+  * - type: `{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}`
   * 
   * Performs a flag evaluation that returns a {{ .Type | OpenFeatureType }}.
   * @param {EvaluationContext} context The evaluation context used on an individual flag evaluation
   * @param {FlagEvaluationOptions} options Additional flag evaluation options
-  * @returns {Promise<{{ .Type | OpenFeatureType }}>} Flag evaluation response
+  * @returns {Promise<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>} Flag evaluation response
   */
-  {{ .Key | ToCamel }}(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<{{ .Type | OpenFeatureType }}>;
+  {{ .Key | ToCamel }}(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>;
 
   /**
   * {{ .Description }}
   * 
   * **Details:**
   * - flag key: `{{ .Key }}`
-  * - default value: `{{ .DefaultValue }}`
+  * - default value: `{{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue }}{{ end }}`
-  * - type: `{{ .Type | OpenFeatureType }}`
+  * - type: `{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}`
   * 
   * Performs a flag evaluation that a returns an evaluation details object.
   * @param {EvaluationContext} context The evaluation context used on an individual flag evaluation
   * @param {FlagEvaluationOptions} options Additional flag evaluation options
-  * @returns {Promise<EvaluationDetails<{{ .Type | OpenFeatureType }}>>} Flag evaluation details response
+  * @returns {Promise<EvaluationDetails<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>>} Flag evaluation details response
   */
-  {{ .Key | ToCamel }}Details(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<{{ .Type | OpenFeatureType }}>>;
+  {{ .Key | ToCamel }}Details(context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>>;
 {{ end -}}
 }
 
@@ -74,12 +75,12 @@ export function getGeneratedClient(domainOrContext?: string | EvaluationContext,
 
   return {
 {{- range .Flagset.Flags }}
-    {{ .Key | ToCamel }}: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<{{ .Type | OpenFeatureType }}> => {
+    {{ .Key | ToCamel }}: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}> => {
-      return client.get{{ .Type | OpenFeatureType | ToPascal }}Value({{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, context, options);
+      return client.get{{ .Type | OpenFeatureType | ToPascal }}Value({{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue | QuoteString }}{{ end }}, context, options);
     },
 
-    {{ .Key | ToCamel }}Details: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<{{ .Type | OpenFeatureType }}>> => {
+    {{ .Key | ToCamel }}Details: (context?: EvaluationContext, options?: FlagEvaluationOptions): Promise<EvaluationDetails<{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}>> => {
-      return client.get{{ .Type | OpenFeatureType | ToPascal }}Details({{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, context, options);
+      return client.get{{ .Type | OpenFeatureType | ToPascal }}Details({{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue | QuoteString }}{{ end }}, context, options);
     },
 {{ end -}}
 {{ printf "  " }}}

internal/generators/python/python.go

@@ -0,0 +1,165 @@
+package python
+
+import (
+	_ "embed"
+	"encoding/json"
+	"fmt"
+	"maps"
+	"slices"
+	"strings"
+	"text/template"
+
+	"github.com/open-feature/cli/internal/flagset"
+	"github.com/open-feature/cli/internal/generators"
+)
+
+type PythonGenerator struct {
+	generators.CommonGenerator
+}
+
+type Params struct {
+}
+
+//go:embed python.tmpl
+var pythonTmpl string
+
+func openFeatureType(t flagset.FlagType) string {
+	switch t {
+	case flagset.IntType:
+		return "int"
+	case flagset.FloatType:
+		return "float"
+	case flagset.BoolType:
+		return "bool"
+	case flagset.StringType:
+		return "str"
+	default:
+		return "object"
+	}
+}
+
+func methodType(flagType flagset.FlagType) string {
+	switch flagType {
+	case flagset.StringType:
+		return "string"
+	case flagset.IntType:
+		return "integer"
+	case flagset.BoolType:
+		return "boolean"
+	case flagset.FloatType:
+		return "float"
+	case flagset.ObjectType:
+		return "object"
+	default:
+		panic("unsupported flag type")
+	}
+}
+
+func typedGetMethodSync(flagType flagset.FlagType) string {
+	return "get_" + methodType(flagType) + "_value"
+}
+
+func typedGetMethodAsync(flagType flagset.FlagType) string {
+	return "get_" + methodType(flagType) + "_value_async"
+}
+
+func typedDetailsMethodSync(flagType flagset.FlagType) string {
+	return "get_" + methodType(flagType) + "_details"
+}
+
+func typedDetailsMethodAsync(flagType flagset.FlagType) string {
+	return "get_" + methodType(flagType) + "_details_async"
+}
+
+func pythonBoolLiteral(value any) any {
+	if v, ok := value.(bool); ok {
+		if v {
+			return "True"
+		}
+		return "False"
+	}
+	return value
+}
+
+func toPythonDict(value any) string {
+	assertedMap, ok := value.(map[string]any)
+	if !ok {
+		return "None"
+	}
+
+	// To have a determined order of the object for comparison
+	keys := slices.Sorted(maps.Keys(assertedMap))
+
+	var builder strings.Builder
+	builder.WriteString("{")
+
+	for index, key := range keys {
+		if index != 0 {
+			builder.WriteString(", ")
+		}
+		val := assertedMap[key]
+
+		builder.WriteString(fmt.Sprintf(`%q: %s`, key, formatNestedValue(val)))
+	}
+
+	builder.WriteString("}")
+	return builder.String()
+}
+
+func formatNestedValue(value any) string {
+	switch val := value.(type) {
+	case string:
+		return fmt.Sprintf("%q", val)
+	case bool:
+		return fmt.Sprintf(pythonBoolLiteral(val).(string))
+	case int, int64, float64:
+		return fmt.Sprintf("%v", val)
+	case map[string]any:
+		return toPythonDict(val)
+	case []any:
+		var sliceBuilder strings.Builder
+		sliceBuilder.WriteString("[")
+		for index, elem := range val {
+			if index > 0 {
+				sliceBuilder.WriteString(", ")
+			}
+
+			sliceBuilder.WriteString(formatNestedValue(elem))
+		}
+		sliceBuilder.WriteString("]")
+		return sliceBuilder.String()
+	default:
+		jsonBytes, err := json.Marshal(val)
+		if err != nil {
+			return "None"
+		}
+		return strings.ReplaceAll(string(jsonBytes), "null", "None")
+	}
+
+}
+
+func (g *PythonGenerator) Generate(params *generators.Params[Params]) error {
+	funcs := template.FuncMap{
+		"OpenFeatureType":         openFeatureType,
+		"TypedGetMethodSync":      typedGetMethodSync,
+		"TypedGetMethodAsync":     typedGetMethodAsync,
+		"TypedDetailsMethodSync":  typedDetailsMethodSync,
+		"TypedDetailsMethodAsync": typedDetailsMethodAsync,
+		"PythonBoolLiteral":       pythonBoolLiteral,
+		"ToPythonDict":            toPythonDict,
+	}
+
+	newParams := &generators.Params[any]{
+		OutputPath: params.OutputPath,
+		Custom:     Params{},
+	}
+
+	return g.GenerateFile(funcs, pythonTmpl, newParams, "openfeature.py")
+}
+
+// NewGenerator creates a generator for Python.
+func NewGenerator(fs *flagset.Flagset) *PythonGenerator {
+	return &PythonGenerator{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
+	}
+}

internal/generators/python/python.tmpl

@@ -0,0 +1,121 @@
+# AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+from typing import Optional
+
+from openfeature.client import OpenFeatureClient
+from openfeature.evaluation_context import EvaluationContext 
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagEvaluationOptions
+from openfeature.hook import Hook
+
+
+class GeneratedClient:
+    def __init__(
+        self,
+        client: OpenFeatureClient,
+    ) -> None:
+        self.client = client
+{{ printf "" }}
+{{- range .Flagset.Flags }}
+    def {{ .Key | ToSnake }}(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> {{ .Type | OpenFeatureType }}:
+        """
+        {{ .Description }}
+
+        **Details:**
+        - flag key: `{{ .Key }}`
+        - default value: `{{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | PythonBoolLiteral }}{{- end }}`
+        - type: `{{ .Type | OpenFeatureType }}`
+        
+        Performs a flag evaluation that returns a `{{ .Type | OpenFeatureType }}`.
+        """
+        return self.client.{{ .Type | TypedGetMethodSync }}(
+            flag_key={{ .Key | Quote }},
+            default_value={{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | QuoteString | PythonBoolLiteral }}{{- end }},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    def {{ .Key | ToSnake }}_details(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        {{ .Description }}
+
+        **Details:**
+        - flag key: `{{ .Key }}`
+        - default value: `{{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | PythonBoolLiteral }}{{- end }}`
+        - type: `{{ .Type | OpenFeatureType }}`
+        
+        Performs a flag evaluation that returns a `FlagEvaluationDetails` instance.
+        """
+        return self.client.{{ .Type | TypedDetailsMethodSync }}(
+            flag_key={{ .Key | Quote }},
+            default_value={{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | QuoteString | PythonBoolLiteral }}{{- end }},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def {{ .Key | ToSnake }}_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> {{ .Type | OpenFeatureType }}:
+        """
+        {{ .Description }}
+
+        **Details:**
+        - flag key: `{{ .Key }}`
+        - default value: `{{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | PythonBoolLiteral }}{{- end }}`
+        - type: `{{ .Type | OpenFeatureType }}`
+        
+        Performs a flag evaluation asynchronously and returns a `{{ .Type | OpenFeatureType }}`.
+        """
+        return await self.client.{{ .Type | TypedGetMethodAsync }}(
+            flag_key={{ .Key | Quote }},
+            default_value={{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | QuoteString | PythonBoolLiteral }}{{- end }},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+    
+    async def {{ .Key | ToSnake }}_details_async(
+        self,
+        evaluation_context: Optional[EvaluationContext] = None,
+        flag_evaluation_options: Optional[FlagEvaluationOptions] = None,
+    ) -> FlagEvaluationDetails:
+        """
+        {{ .Description }}
+
+        **Details:**
+        - flag key: `{{ .Key }}`
+        - default value: `{{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | PythonBoolLiteral }}{{- end }}`
+        - type: `{{ .Type | OpenFeatureType }}`
+        
+        Performs a flag evaluation asynchronously and returns a `FlagEvaluationDetails` instance.
+        """
+        return await self.client.{{ .Type | TypedDetailsMethodAsync }}(
+            flag_key={{ .Key | Quote }},
+            default_value={{- if eq (.Type | OpenFeatureType) "object"}}{{.DefaultValue | ToPythonDict }}{{- else }}{{ .DefaultValue | QuoteString | PythonBoolLiteral }}{{- end }},
+            evaluation_context=evaluation_context,
+            flag_evaluation_options=flag_evaluation_options,
+        )
+{{ end -}}
+{{ printf "\n" }}
+def get_generated_client(
+    client: Optional[OpenFeatureClient] = None,
+    domain: Optional[str] = None,
+    version: Optional[str] = None,
+    context: Optional[EvaluationContext] = None,
+    hooks: Optional[list[Hook]] = None,
+) -> GeneratedClient:
+    if not client:
+        client = OpenFeatureClient(
+            domain=domain,
+            version=version,
+            context=context,
+            hooks=hooks,
+        )
+    return GeneratedClient(client)

internal/generators/react/react.go

@@ -2,6 +2,7 @@ package react
 
 import (
 	_ "embed"
+	"encoding/json"
 	"text/template"
 
 	"github.com/open-feature/cli/internal/flagset"
@@ -28,14 +29,25 @@ func openFeatureType(t flagset.FlagType) string {
 		return "boolean"
 	case flagset.StringType:
 		return "string"
+	case flagset.ObjectType:
+		return "object"
 	default:
 		return ""
 	}
 }
 
+func toJSONString(value any) string {
+	bytes, err := json.Marshal(value)
+	if err != nil {
+		return "{}"
+	}
+	return string(bytes)
+}
+
 func (g *ReactGenerator) Generate(params *generators.Params[Params]) error {
 	funcs := template.FuncMap{
 		"OpenFeatureType": openFeatureType,
+		"ToJSONString":    toJSONString,
 	}
 
 	newParams := &generators.Params[any]{
@@ -49,8 +61,6 @@ func (g *ReactGenerator) Generate(params *generators.Params[Params]) error {
 // NewGenerator creates a generator for React.
 func NewGenerator(fs *flagset.Flagset) *ReactGenerator {
 	return &ReactGenerator{
-		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{
+		CommonGenerator: *generators.NewGenerator(fs, map[flagset.FlagType]bool{}),
-			flagset.ObjectType: true,
-		}),
 	}
 }

internal/generators/react/react.tmpl

@@ -5,6 +5,7 @@ import {
   type ReactFlagEvaluationNoSuspenseOptions,
   useFlag,
   useSuspenseFlag,
+  JsonValue
 } from "@openfeature/react-sdk";
 {{ range .Flagset.Flags }}
 /**
@@ -12,11 +13,11 @@ import {
 * 
 * **Details:**
 * - flag key: `{{ .Key }}`
-* - default value: `{{ .DefaultValue }}`
+* - default value: `{{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue }}{{ end }}`
-* - type: `{{ .Type | OpenFeatureType }}`
+* - type: `{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}`
 */
 export const use{{ .Key | ToPascal }} = (options?: ReactFlagEvaluationOptions) => {
-  return useFlag({{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, options);
+  return useFlag({{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue | QuoteString }}{{ end }}, options);
 };
 
 /**
@@ -24,13 +25,13 @@ export const use{{ .Key | ToPascal }} = (options?: ReactFlagEvaluationOptions) =
 * 
 * **Details:**
 * - flag key: `{{ .Key }}`
-* - default value: `{{ .DefaultValue }}`
+* - default value: `{{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue }}{{ end }}`
-* - type: `{{ .Type | OpenFeatureType }}`
+* - type: `{{ if eq (.Type | OpenFeatureType) "object" }}JsonValue{{ else }}{{ .Type | OpenFeatureType }}{{ end }}`
 *
 * Equivalent to useFlag with options: `{ suspend: true }`
 * @experimental — Suspense is an experimental feature subject to change in future versions.
 */
 export const useSuspense{{ .Key | ToPascal }} = (options?: ReactFlagEvaluationNoSuspenseOptions) => {
-  return useSuspenseFlag({{ .Key | Quote }}, {{ .DefaultValue | QuoteString }}, options);
+  return useSuspenseFlag({{ .Key | Quote }}, {{ if eq (.Type | OpenFeatureType) "object"}}{{ .DefaultValue | ToJSONString }}{{ else }}{{ .DefaultValue | QuoteString }}{{ end }}, options);
 };
 {{ end}}

internal/manifest/compare_test.go

@@ -0,0 +1,65 @@
+package manifest
+
+import (
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestCompareDifferentManifests(t *testing.T) {
+	oldManifest := &Manifest{
+		Flags: map[string]any{
+			"flag1": "value1",
+			"flag2": "value2",
+		},
+	}
+
+	newManifest := &Manifest{
+		Flags: map[string]any{
+			"flag1": "value1",
+			"flag2": "newValue2",
+			"flag3": "value3",
+		},
+	}
+
+	changes, err := Compare(oldManifest, newManifest)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	expectedChanges := []Change{
+		{Type: "change", Path: "flags.flag2", OldValue: "value2", NewValue: "newValue2"},
+		{Type: "add", Path: "flags.flag3", NewValue: "value3"},
+	}
+
+	sortChanges(changes)
+	sortChanges(expectedChanges)
+
+	if !reflect.DeepEqual(changes, expectedChanges) {
+		t.Errorf("expected %v, got %v", expectedChanges, changes)
+	}
+}
+
+func TestCompareIdenticalManifests(t *testing.T) {
+	manifest := &Manifest{
+		Flags: map[string]any{
+			"flag1": "value1",
+			"flag2": "value2",
+		},
+	}
+
+	changes, err := Compare(manifest, manifest)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(changes) != 0 {
+		t.Errorf("expected no changes, got %v", changes)
+	}
+}
+
+func sortChanges(changes []Change) {
+	sort.Slice(changes, func(i, j int) bool {
+		return changes[i].Path < changes[j].Path
+	})
+}

internal/manifest/json-schema.go

@@ -63,9 +63,9 @@ type Manifest struct {
 // Converts the Manifest struct to a JSON schema.
 func ToJSONSchema() *jsonschema.Schema {
 	reflector := &jsonschema.Reflector{
-		ExpandedStruct: true,
+		ExpandedStruct:            true,
 		AllowAdditionalProperties: true,
-		BaseSchemaID: "openfeature-cli",
+		BaseSchemaID:              "openfeature-cli",
 	}
 
 	if err := reflector.AddGoComments("github.com/open-feature/cli", "./internal/manifest"); err != nil {

internal/manifest/manage.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 
 	"github.com/open-feature/cli/internal/filesystem"
+	"github.com/spf13/afero"
 )
 
 type initManifest struct {
@@ -14,7 +15,7 @@ type initManifest struct {
 // Create creates a new manifest file at the given path.
 func Create(path string) error {
 	m := &initManifest{
-		Schema:  "https://raw.githubusercontent.com/open-feature/cli/refs/heads/main/schema/v0/flag_manifest.json",
+		Schema: "https://raw.githubusercontent.com/open-feature/cli/main/schema/v0/flag-manifest.json",
 		Manifest: Manifest{
 			Flags: map[string]any{},
 		},
@@ -25,3 +26,19 @@ func Create(path string) error {
 	}
 	return filesystem.WriteFile(path, formattedInitManifest)
 }
+
+// Load loads a manifest from a JSON file, unmarshals it, and returns a Manifest object.
+func Load(path string) (*Manifest, error) {
+	fs := filesystem.FileSystem()
+	data, err := afero.ReadFile(fs, path)
+	if err != nil {
+		return nil, err
+	}
+
+	var m Manifest
+	if err := json.Unmarshal(data, &m); err != nil {
+		return nil, err
+	}
+
+	return &m, nil
+}

internal/manifest/output.go

@@ -0,0 +1,35 @@
+package manifest
+
+// OutputFormat represents the available output formats for the compare command
+type OutputFormat string
+
+const (
+	// OutputFormatTree represents the tree output format (default)
+	OutputFormatTree OutputFormat = "tree"
+	// OutputFormatFlat represents the flat output format
+	OutputFormatFlat OutputFormat = "flat"
+	// OutputFormatJSON represents the JSON output format
+	OutputFormatJSON OutputFormat = "json"
+	// OutputFormatYAML represents the YAML output format
+	OutputFormatYAML OutputFormat = "yaml"
+)
+
+// IsValidOutputFormat checks if the given format is a valid output format
+func IsValidOutputFormat(format string) bool {
+	switch OutputFormat(format) {
+	case OutputFormatTree, OutputFormatFlat, OutputFormatJSON, OutputFormatYAML:
+		return true
+	default:
+		return false
+	}
+}
+
+// GetValidOutputFormats returns a list of all valid output formats
+func GetValidOutputFormats() []string {
+	return []string{
+		string(OutputFormatTree),
+		string(OutputFormatFlat),
+		string(OutputFormatJSON),
+		string(OutputFormatYAML),
+	}
+}

lefthook.yml

@@ -0,0 +1,21 @@
+# This file configures Lefthook, a Git hooks manager, for the project.
+# For detailed instructions on how to contribute and set up Lefthook,
+# please refer to the relevant section in the contributing documentation (CONTRIBUTING.md).
+pre-commit:
+  commands:
+    go-fmt:
+      run: go fmt ./...
+      stage_fixed: true
+pre-push:
+  commands:
+    generate-docs:
+      run: |
+        make generate-docs
+        if ! git diff --quiet; then
+          echo "Documentation is outdated. Please run 'make generate-docs' and commit the changes."
+          exit 1
+        fi
+      skip: false
+    tests:
+      run: make test
+      skip: false

renovate.json

@@ -0,0 +1,4 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["github>open-feature/community-tooling"]
+}

schema/generate-schema.go

@@ -29,7 +29,7 @@ func main() {
 	defer file.Close()
 
 	if _, err := file.Write(data); err != nil {
-		log.Fatal(fmt.Errorf("failed to write JSON schema to file: %w", err));
+		log.Fatal(fmt.Errorf("failed to write JSON schema to file: %w", err))
 	}
 
 	fmt.Println("JSON schema generated successfully at " + schemaPath)

schema/v0/schema_test.go

@@ -49,11 +49,11 @@ func walkPath(shouldPass bool, root string) error {
 		schemaLoader := gojsonschema.NewStringLoader(SchemaFile)
 		manifestLoader := gojsonschema.NewGoLoader(v)
 		result, err := gojsonschema.Validate(schemaLoader, manifestLoader)
-		if (err != nil) {
+		if err != nil {
 			return fmt.Errorf("Error validating json schema: %v", err)
 		}
 
-		if (len(result.Errors()) >= 1 && shouldPass == true) {
+		if len(result.Errors()) >= 1 && shouldPass == true {
 			var errorMessage strings.Builder
 
 			errorMessage.WriteString("file " + path + " should be valid, but had the following issues:\n")
@@ -63,7 +63,7 @@ func walkPath(shouldPass bool, root string) error {
 			return fmt.Errorf("%s", errorMessage.String())
 		}
 
-		if (len(result.Errors()) == 0 && shouldPass == false) {
+		if len(result.Errors()) == 0 && shouldPass == false {
 			return fmt.Errorf("file %s should be invalid, but no issues were detected", path)
 		}
 

test/README.md

@@ -0,0 +1,65 @@
+# OpenFeature CLI Integration Testing
+
+This directory contains integration tests for validating the OpenFeature CLI generators.
+
+## Integration Test Structure
+
+The integration tests use [Dagger](https://dagger.io/) to create reproducible test environments without needing to install dependencies locally.
+
+Each integration test:
+
+1. Builds the CLI from source
+2. Generates code using a sample manifest file
+3. Compiles and tests the generated code in a language-specific container
+4. Reports success or failure
+
+## Running Tests
+
+### Run all integration tests
+
+```bash
+make test-integration
+```
+
+### Run a specific integration test
+
+```bash
+# For C# tests
+make test-csharp-dagger
+```
+
+## Adding a New Integration Test
+
+To add an integration test for a new generator:
+
+1. Create a combined implementation and runner file in `test/integration/cmd/<language>/run.go`
+2. Update the main runner in `test/integration/cmd/run.go` to execute your new test
+3. Add a Makefile target for running your test individually
+
+See the step-by-step guide in [new-language.md](new-language.md) for detailed instructions.
+
+## How It Works
+
+The testing framework uses the following components:
+
+- `test/integration/integration.go`: Defines the `Test` interface and common utilities
+- `test/integration/cmd/run.go`: Runner for all integration tests that executes each language-specific test
+- `test/integration/cmd/<language>/run.go`: Combined implementation and runner for each language
+- `test/<language>-integration/`: Contains language-specific test files (code samples, project files)
+
+Each integration test uses Dagger to:
+
+1. Build the CLI in a clean environment
+2. Generate code using a sample manifest
+3. Compile and test the generated code in a language-specific container
+4. Report success or failure
+
+## Benefits Over Shell Scripts
+
+Using Dagger for integration tests provides several advantages:
+
+1. **Reproducibility**: Tests run in containerized environments that are identical locally and in CI
+2. **Language Support**: Easy to add new language tests with the same pattern
+3. **Improved Debugging**: Clear separation of build, generate, and test steps
+4. **Parallelization**: Tests can run in parallel when executed in different containers
+5. **No Dependencies**: No need to install language-specific tooling locally

test/csharp-integration/CompileTest.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.6" />
+    <PackageReference Include="OpenFeature" Version="2.7.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="generated\*.cs" />
+  </ItemGroup>
+
+</Project>

test/csharp-integration/Dockerfile

@@ -0,0 +1,17 @@
+FROM mcr.microsoft.com/dotnet/sdk:8.0
+
+WORKDIR /app
+
+# Copy necessary files
+COPY expected/OpenFeature.cs /app/
+COPY CompileTest.csproj /app/
+COPY Program.cs /app/
+
+# Restore dependencies
+RUN dotnet restore
+
+# Build the project
+RUN dotnet build
+
+# The image will be used to validate C# compilation only
+ENTRYPOINT ["dotnet", "run"]

test/csharp-integration/OpenFeature.cs

@@ -0,0 +1,208 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using OpenFeature;
+using OpenFeature.Model;
+
+namespace OpenFeature
+{
+    /// <summary>
+    /// Generated OpenFeature client for typesafe flag access
+    /// </summary>
+    public class GeneratedClient
+    {
+        private readonly IFeatureClient _client;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneratedClient"/> class.
+        /// </summary>
+        /// <param name="client">The OpenFeature client to use for flag evaluations.</param>
+        public GeneratedClient(IFeatureClient client)
+        {
+            _client = client ?? throw new ArgumentNullException(nameof(client));
+        }
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: float</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<float> DiscountPercentageAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetFloatValueAsync("discountPercentage", 0.15, evaluationContext);
+        }
+
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: float</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<EvaluationDetails<float>> DiscountPercentageDetailsAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetFloatDetailsAsync("discountPercentage", 0.15, evaluationContext);
+        }
+        
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<bool> EnableFeatureAAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetBoolValueAsync("enableFeatureA", false, evaluationContext);
+        }
+
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<EvaluationDetails<bool>> EnableFeatureADetailsAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetBoolDetailsAsync("enableFeatureA", false, evaluationContext);
+        }
+        
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<string> GreetingMessageAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetStringValueAsync("greetingMessage", "Hello there!", evaluationContext);
+        }
+
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<EvaluationDetails<string>> GreetingMessageDetailsAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetStringDetailsAsync("greetingMessage", "Hello there!", evaluationContext);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<Value> ThemeCustomizationAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectValueAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<Value>> ThemeCustomizationDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectDetailsAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<int> UsernameMaxLengthAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetIntValueAsync("usernameMaxLength", 50, evaluationContext);
+        }
+
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<EvaluationDetails<int>> UsernameMaxLengthDetailsAsync(EvaluationContext evaluationContext = null)
+        {
+            return await _client.GetIntDetailsAsync("usernameMaxLength", 50, evaluationContext);
+        }
+        
+
+        /// <summary>
+        /// Creates a new GeneratedClient using the default OpenFeature client
+        /// </summary>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient()
+        {
+            return new GeneratedClient(Api.GetClient());
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain)
+        {
+            return new GeneratedClient(Api.GetClient(domain));
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client with context
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <param name="evaluationContext">Default context to use for evaluations</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain, EvaluationContext evaluationContext)
+        {
+            return new GeneratedClient(Api.GetClient(domain, evaluationContext));
+        }
+    }
+}

test/csharp-integration/Program.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using OpenFeature;
+using OpenFeature.Model;
+using TestNamespace;
+
+// This program just validates that the generated OpenFeature C# client code compiles
+// We don't need to run the code since the goal is to test compilation only
+namespace CompileTest
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Testing compilation of generated OpenFeature client...");
+            
+            // Test DI initialization
+            var services = new ServiceCollection();
+            // Register OpenFeature services manually for the test
+            services.AddSingleton(_ => Api.Instance);
+            services.AddSingleton<IFeatureClient>(_ => Api.Instance.GetClient());
+            services.AddSingleton<GeneratedClient>();
+            var serviceProvider = services.BuildServiceProvider();
+            
+            // Test client retrieval from DI
+            var client = serviceProvider.GetRequiredService<GeneratedClient>();
+            
+            // Also test the traditional factory method
+            var clientFromFactory = GeneratedClient.CreateClient();
+            
+            // Success!
+            Console.WriteLine("Generated C# code compiles successfully!");
+        }
+    }
+}

test/csharp-integration/README.md

@@ -0,0 +1,43 @@
+# C# Integration Testing
+
+This directory contains integration tests for the C# code generator.
+
+## Running the tests
+
+Run the C# integration tests with Dagger:
+
+```bash
+make test-csharp-dagger
+```
+
+This will:
+1. Build the OpenFeature CLI
+2. Generate C# client code using the sample manifest
+3. Run the C# compilation test in an isolated environment
+4. Report success or failure
+
+## What the test does
+
+The integration test:
+1. Builds the OpenFeature CLI inside a container
+2. Generates C# client code using a sample manifest
+3. Compiles the generated code with a sample program
+4. Runs the compiled program to verify it works correctly
+
+## Test Files
+
+- `CompileTest.csproj`: .NET project file for compilation testing
+- `Program.cs`: Test program that uses the generated code
+- `expected/`: Directory containing expected output files (used for verification)
+
+## Implementation
+
+The C# integration test uses Dagger to create a reproducible test environment:
+
+1. It builds the CLI in a Go container
+2. Generates C# code using the CLI
+3. Tests the generated code in a .NET container
+
+The implementation is located in `test/integration/cmd/csharp/run.go`.
+
+For more implementation details, see the main [test/README.md](../README.md) file.

test/csharp-integration/expected/OpenFeature.cs

@@ -0,0 +1,252 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
+using OpenFeature;
+using OpenFeature.Model;
+
+
+namespace TestNamespace
+{
+    /// <summary>
+    /// Service collection extensions for OpenFeature
+    /// </summary>
+    public static class OpenFeatureServiceExtensions
+    {
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient())
+                .AddSingleton<GeneratedClient>();
+        }
+
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client for a specific domain
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services, string domain)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient(domain))
+                .AddSingleton<GeneratedClient>();
+        }
+    }
+
+    /// <summary>
+    /// Generated OpenFeature client for typesafe flag access
+    /// </summary>
+    public class GeneratedClient
+    {
+        private readonly IFeatureClient _client;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneratedClient"/> class.
+        /// </summary>
+        /// <param name="client">The OpenFeature client to use for flag evaluations.</param>
+        public GeneratedClient(IFeatureClient client)
+        {
+            _client = client ?? throw new ArgumentNullException(nameof(client));
+        }
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<double> DiscountPercentageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleValueAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<double>> DiscountPercentageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleDetailsAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<bool> EnableFeatureAAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanValueAsync("enableFeatureA", false, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<bool>> EnableFeatureADetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanDetailsAsync("enableFeatureA", false, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<string> GreetingMessageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringValueAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<string>> GreetingMessageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringDetailsAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<Value> ThemeCustomizationAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectValueAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<Value>> ThemeCustomizationDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectDetailsAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<int> UsernameMaxLengthAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerValueAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<int>> UsernameMaxLengthDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerDetailsAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+        
+
+        /// <summary>
+        /// Creates a new GeneratedClient using the default OpenFeature client
+        /// </summary>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient()
+        {
+            return new GeneratedClient(Api.Instance.GetClient());
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client with context
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <param name="evaluationContext">Default context to use for evaluations</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain, EvaluationContext? evaluationContext = null)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+    }
+}

test/csharp-integration/expected/OpenFeature.g.cs

@@ -0,0 +1,251 @@
+// AUTOMATICALLY GENERATED BY OPENFEATURE CLI, DO NOT EDIT.
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
+using OpenFeature;
+using OpenFeature.Model;
+
+namespace TestNamespace
+{
+    /// <summary>
+    /// Service collection extensions for OpenFeature
+    /// </summary>
+    public static class OpenFeatureServiceExtensions
+    {
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient())
+                .AddSingleton<GeneratedClient>();
+        }
+
+        /// <summary>
+        /// Adds OpenFeature services to the service collection with the generated client for a specific domain
+        /// </summary>
+        /// <param name="services">The service collection to add services to</param>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>The service collection for chaining</returns>
+        public static IServiceCollection AddOpenFeature(this IServiceCollection services, string domain)
+        {
+            return services
+                .AddSingleton(_ => Api.Instance)
+                .AddSingleton(provider => provider.GetRequiredService<Api>().GetClient(domain))
+                .AddSingleton<GeneratedClient>();
+        }
+    }
+
+    /// <summary>
+    /// Generated OpenFeature client for typesafe flag access
+    /// </summary>
+    public class GeneratedClient
+    {
+        private readonly IFeatureClient _client;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneratedClient"/> class.
+        /// </summary>
+        /// <param name="client">The OpenFeature client to use for flag evaluations.</param>
+        public GeneratedClient(IFeatureClient client)
+        {
+            _client = client ?? throw new ArgumentNullException(nameof(client));
+        }
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<double> DiscountPercentageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleValueAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Discount percentage applied to purchases.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: discountPercentage</para>
+        /// <para>Default value: 0.15</para>
+        /// <para>Type: double</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<double>> DiscountPercentageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetDoubleDetailsAsync("discountPercentage", 0.15, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<bool> EnableFeatureAAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanValueAsync("enableFeatureA", false, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Controls whether Feature A is enabled.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: enableFeatureA</para>
+        /// <para>Default value: false</para>
+        /// <para>Type: bool</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<bool>> EnableFeatureADetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetBooleanDetailsAsync("enableFeatureA", false, evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<string> GreetingMessageAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringValueAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+
+        /// <summary>
+        /// The message to use for greeting users.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: greetingMessage</para>
+        /// <para>Default value: Hello there!</para>
+        /// <para>Type: string</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<string>> GreetingMessageDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetStringDetailsAsync("greetingMessage", "Hello there!", evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<Value> ThemeCustomizationAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectValueAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Allows customization of theme colors.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: themeCustomization</para>
+        /// <para>Default value: new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build())</para>
+        /// <para>Type: object</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<Value>> ThemeCustomizationDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetObjectDetailsAsync("themeCustomization", new Value(Structure.Builder().Set("primaryColor", "#007bff").Set("secondaryColor", "#6c757d").Build()), evaluationContext, options);
+        }
+        
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The flag value</returns>
+        public async Task<int> UsernameMaxLengthAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerValueAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+
+        /// <summary>
+        /// Maximum allowed length for usernames.
+        /// </summary>
+        /// <remarks>
+        /// <para>Flag key: usernameMaxLength</para>
+        /// <para>Default value: 50</para>
+        /// <para>Type: int</para>
+        /// </remarks>
+        /// <param name="evaluationContext">Optional context for the flag evaluation</param>
+        /// <param name="options">Options for flag evaluation</param>
+        /// <returns>The evaluation details containing the flag value and metadata</returns>
+        public async Task<FlagEvaluationDetails<int>> UsernameMaxLengthDetailsAsync(EvaluationContext? evaluationContext = null, FlagEvaluationOptions? options = null)
+        {
+            return await _client.GetIntegerDetailsAsync("usernameMaxLength", 50, evaluationContext, options);
+        }
+        
+
+        /// <summary>
+        /// Creates a new GeneratedClient using the default OpenFeature client
+        /// </summary>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient()
+        {
+            return new GeneratedClient(Api.Instance.GetClient());
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+
+        /// <summary>
+        /// Creates a new GeneratedClient using a domain-specific OpenFeature client with context
+        /// </summary>
+        /// <param name="domain">The domain to get the client for</param>
+        /// <param name="evaluationContext">Default context to use for evaluations</param>
+        /// <returns>A new GeneratedClient instance</returns>
+        public static GeneratedClient CreateClient(string domain, EvaluationContext? evaluationContext = null)
+        {
+            return new GeneratedClient(Api.Instance.GetClient(domain));
+        }
+    }
+}

test/go-integration/go.mod

@@ -0,0 +1,13 @@
+module github.com/open-feature/cli/test/go-integration
+
+go 1.22
+
+require github.com/open-feature/go-sdk v1.15.0
+
+require (
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	golang.org/x/net v0.21.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
+) 

test/go-integration/test.go

@@ -0,0 +1,106 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	generated "github.com/open-feature/cli/test/go-integration/openfeature"
+	"github.com/open-feature/go-sdk/openfeature"
+	"github.com/open-feature/go-sdk/openfeature/memprovider"
+)
+
+func main() {
+	if err := run(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	// Set up the in-memory provider with test flags
+	provider := memprovider.NewInMemoryProvider(map[string]memprovider.InMemoryFlag{
+		"discountPercentage": {
+			State:          memprovider.Enabled,
+			DefaultVariant: "default",
+			Variants: map[string]any{
+				"default": 0.15,
+			},
+		},
+		"enableFeatureA": {
+			State:          memprovider.Enabled,
+			DefaultVariant: "default",
+			Variants: map[string]any{
+				"default": false,
+			},
+		},
+		"greetingMessage": {
+			State:          memprovider.Enabled,
+			DefaultVariant: "default",
+			Variants: map[string]any{
+				"default": "Hello there!",
+			},
+		},
+		"usernameMaxLength": {
+			State:          memprovider.Enabled,
+			DefaultVariant: "default",
+			Variants: map[string]any{
+				"default": 50,
+			},
+		},
+		"themeCustomization": {
+			State:          memprovider.Enabled,
+			DefaultVariant: "default",
+			Variants: map[string]any{
+				"default": map[string]any{
+					"primaryColor":   "#007bff",
+					"secondaryColor": "#6c757d",
+				},
+			},
+		},
+	})
+
+	// Set the provider and wait for it to be ready
+	err := openfeature.SetProviderAndWait(provider)
+	if err != nil {
+		return fmt.Errorf("Failed to set provider: %w", err)
+	}
+
+	ctx := context.Background()
+	evalCtx := openfeature.NewEvaluationContext("someid", map[string]any{})
+
+	// Use the generated code for all flag evaluations
+	enableFeatureA, err := generated.EnableFeatureA.Value(ctx, evalCtx)
+	if err != nil {
+		return fmt.Errorf("Error evaluating boolean flag: %w", err)
+	}
+	fmt.Printf("enableFeatureA: %v\n", enableFeatureA)
+
+	discount, err := generated.DiscountPercentage.Value(ctx, evalCtx)
+	if err != nil {
+		return fmt.Errorf("Failed to get discount: %w", err)
+	}
+	fmt.Printf("Discount Percentage: %.2f\n", discount)
+
+	greetingMessage, err := generated.GreetingMessage.Value(ctx, evalCtx)
+	if err != nil {
+		return fmt.Errorf("Error evaluating string flag: %w", err)
+	}
+	fmt.Printf("greetingMessage: %v\n", greetingMessage)
+
+	usernameMaxLength, err := generated.UsernameMaxLength.Value(ctx, evalCtx)
+	if err != nil {
+		return fmt.Errorf("Error evaluating int flag: %v\n", err)
+	}
+	fmt.Printf("usernameMaxLength: %v\n", usernameMaxLength)
+
+	themeCustomization, err := generated.ThemeCustomization.Value(ctx, evalCtx)
+	if err != nil {
+		return fmt.Errorf("Error evaluating int flag: %v\n", err)
+	}
+	fmt.Printf("themeCustomization: %v\n", themeCustomization)
+
+	fmt.Println("Generated Go code compiles successfully!")
+	
+	return nil
+}

test/integration/cmd/csharp/run.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"dagger.io/dagger"
+	"github.com/open-feature/cli/test/integration"
+)
+
+// Test implements the integration test for the C# generator
+type Test struct {
+	// ProjectDir is the absolute path to the root of the project
+	ProjectDir string
+	// TestDir is the absolute path to the test directory
+	TestDir string
+}
+
+// New creates a new Test
+func New(projectDir, testDir string) *Test {
+	return &Test{
+		ProjectDir: projectDir,
+		TestDir:    testDir,
+	}
+}
+
+// Run executes the C# integration test using Dagger
+func (t *Test) Run(ctx context.Context, client *dagger.Client) (*dagger.Container, error) {
+	// Source code container
+	source := client.Host().Directory(t.ProjectDir)
+	testFiles := client.Host().Directory(t.TestDir, dagger.HostDirectoryOpts{
+		Include: []string{"CompileTest.csproj", "Program.cs"},
+	})
+
+	// Build the CLI
+	cli := client.Container().
+		From("golang:1.24-alpine").
+		WithDirectory("/src", source).
+		WithWorkdir("/src").
+		WithExec([]string{"go", "build", "-o", "cli", "./cmd/openfeature"})
+
+	// Generate C# client
+	generated := cli.WithExec([]string{
+		"./cli", "generate", "csharp",
+		"--manifest=/src/sample/sample_manifest.json",
+		"--output=/tmp/generated",
+		"--namespace=TestNamespace",
+	})
+
+	// Get generated files
+	generatedFiles := generated.Directory("/tmp/generated")
+
+	// Test C# compilation with the generated files
+	dotnetContainer := client.Container().
+		From("mcr.microsoft.com/dotnet/sdk:8.0").
+		WithDirectory("/app/generated", generatedFiles).
+		WithDirectory("/app", testFiles).
+		WithWorkdir("/app").
+		WithExec([]string{"dotnet", "restore"}).
+		WithExec([]string{"dotnet", "build"}).
+		WithExec([]string{"dotnet", "run"})
+
+	return dotnetContainer, nil
+}
+
+// Name returns the name of the integration test
+func (t *Test) Name() string {
+	return "csharp"
+}
+
+func main() {
+	ctx := context.Background()
+
+	// Get project root
+	projectDir, err := filepath.Abs(os.Getenv("PWD"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get project dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Get test directory
+	testDir, err := filepath.Abs(filepath.Join(projectDir, "test/csharp-integration"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get test dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Create and run the C# integration test
+	test := New(projectDir, testDir)
+
+	if err := integration.RunTest(ctx, test); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+}

test/integration/cmd/go/run.go

@@ -0,0 +1,101 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"dagger.io/dagger"
+	"github.com/open-feature/cli/test/integration"
+)
+
+// Test implements the integration test for the Go generator
+type Test struct {
+	// ProjectDir is the absolute path to the root of the project
+	ProjectDir string
+	// TestDir is the absolute path to the test directory
+	TestDir string
+}
+
+// New creates a new Test
+func New(projectDir, testDir string) *Test {
+	return &Test{
+		ProjectDir: projectDir,
+		TestDir:    testDir,
+	}
+}
+
+// Run executes the Go integration test using Dagger
+func (t *Test) Run(ctx context.Context, client *dagger.Client) (*dagger.Container, error) {
+	// Source code container
+	source := client.Host().Directory(t.ProjectDir)
+	testFiles := client.Host().Directory(t.TestDir, dagger.HostDirectoryOpts{
+		Include: []string{"test.go", "go.mod"},
+	})
+
+	// Build the CLI
+	cli := client.Container().
+		From("golang:1.23-alpine").
+		WithExec([]string{"apk", "add", "--no-cache", "git"}).
+		WithDirectory("/src", source).
+		WithWorkdir("/src").
+		WithExec([]string{"go", "mod", "tidy"}).
+		WithExec([]string{"go", "mod", "download"}).
+		WithExec([]string{"go", "build", "-o", "cli", "./cmd/openfeature"})
+
+	// Generate Go client
+	generated := cli.WithExec([]string{
+		"./cli", "generate", "go",
+		"--manifest=/src/sample/sample_manifest.json",
+		"--output=/tmp/generated",
+		"--package-name=openfeature",
+	})
+
+	// Get generated files
+	generatedFiles := generated.Directory("/tmp/generated")
+
+	// Test Go compilation with the generated files
+	goContainer := client.Container().
+		From("golang:1.23-alpine").
+		WithExec([]string{"apk", "add", "--no-cache", "git"}).
+		WithWorkdir("/app").
+		WithDirectory("/app", testFiles).
+		WithDirectory("/app/openfeature", generatedFiles).
+		WithExec([]string{"go", "mod", "tidy"}).
+		WithExec([]string{"go", "build", "-o", "test", "-v"}).
+		WithExec([]string{"./test"})
+
+	return goContainer, nil
+}
+
+// Name returns the name of the integration test
+func (t *Test) Name() string {
+	return "go"
+}
+
+func main() {
+	ctx := context.Background()
+
+	// Get project root
+	projectDir, err := filepath.Abs(os.Getenv("PWD"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get project dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Get test directory
+	testDir, err := filepath.Abs(filepath.Join(projectDir, "test/go-integration"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get test dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Create and run the Go integration test
+	test := New(projectDir, testDir)
+
+	if err := integration.RunTest(ctx, test); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+}

test/integration/cmd/nodejs/run.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"context"
+	"dagger.io/dagger"
+	"fmt"
+	"github.com/open-feature/cli/test/integration"
+	"os"
+	"path/filepath"
+)
+
+type Test struct {
+	ProjectDir string
+	TestDir    string
+}
+
+func New(projectDir, testDir string) *Test {
+	return &Test{
+		ProjectDir: projectDir,
+		TestDir:    testDir,
+	}
+}
+func (t *Test) Run(ctx context.Context, client *dagger.Client) (*dagger.Container, error) {
+	source := client.Host().Directory(t.ProjectDir)
+	testFiles := client.Host().Directory(t.TestDir, dagger.HostDirectoryOpts{
+		Include: []string{"package.json", "test.ts"},
+	})
+
+	cli := client.Container().
+		From("golang:1.24-alpine").
+		WithDirectory("/src", source).
+		WithWorkdir("/src").
+		WithExec([]string{"go", "build", "-o", "cli", "./cmd/openfeature"})
+
+	generated := cli.WithExec([]string{
+		"./cli", "generate", "nodejs",
+		"--manifest=/src/sample/sample_manifest.json",
+		"--output=/tmp/generated",
+	})
+
+	generatedFiles := generated.Directory("/tmp/generated")
+
+	nodeContainer := client.Container().
+		From("node:22-alpine").
+		WithExec([]string{"npm", "install", "-g", "typescript"}).
+		WithDirectory("/app/generated", generatedFiles).
+		WithDirectory("/app", testFiles).
+		WithWorkdir("/app").
+		WithExec([]string{"npm", "install"}).
+		WithExec([]string{"npm", "test"})
+
+	return nodeContainer, nil
+}
+func (t *Test) Name() string {
+	return "nodejs"
+}
+func main() {
+	ctx := context.Background()
+
+	projectDir, err := filepath.Abs(os.Getenv("PWD"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get project dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	testDir, err := filepath.Abs(filepath.Join(projectDir, "test/nodejs-integration"))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get test dir: %v\n", err)
+		os.Exit(1)
+	}
+	test := New(projectDir, testDir)
+
+	if err := integration.RunTest(ctx, test); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+}

test/integration/cmd/run.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+func main() {
+
+	// Run the language-specific tests
+	fmt.Println("=== Running all integration tests ===")
+
+	// Run the C# integration test
+	csharpCmd := exec.Command("go", "run", "github.com/open-feature/cli/test/integration/cmd/csharp")
+	csharpCmd.Stdout = os.Stdout
+	csharpCmd.Stderr = os.Stderr
+	if err := csharpCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error running C# integration test: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Run the Go integration test
+	goCmd := exec.Command("go", "run", "github.com/open-feature/cli/test/integration/cmd/go")
+	goCmd.Stdout = os.Stdout
+	goCmd.Stderr = os.Stderr
+	if err := goCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error running Go integration test: %v\n", err)
+		os.Exit(1)
+	}
+	//Run the nodejs test
+	nodeCmd := exec.Command("go", "run", "github.com/open-feature/cli/test/integration/cmd/nodejs")
+	nodeCmd.Stdout = os.Stdout
+	nodeCmd.Stderr = os.Stderr
+	if err := nodeCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error running nodejs integration test: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Add more tests here as they are available
+
+	fmt.Println("=== All integration tests passed successfully ===")
+}

test/integration/integration.go

@@ -0,0 +1,44 @@
+package integration
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"dagger.io/dagger"
+)
+
+// Test defines the interface for all integration tests
+type Test interface {
+	// Run executes the integration test with the given Dagger client
+	Run(ctx context.Context, client *dagger.Client) (*dagger.Container, error)
+	// Name returns the name of the integration test
+	Name() string
+}
+
+// RunTest runs a single integration test
+func RunTest(ctx context.Context, test Test) error {
+	// Initialize Dagger client
+	client, err := dagger.Connect(ctx, dagger.WithLogOutput(os.Stdout))
+	if err != nil {
+		return fmt.Errorf("failed to connect to Dagger engine: %w", err)
+	}
+	defer client.Close()
+
+	fmt.Printf("=== Running %s integration test ===\n", test.Name())
+
+	// Run the integration test
+	container, err := test.Run(ctx, client)
+	if err != nil {
+		return fmt.Errorf("failed to run %s integration test: %w", test.Name(), err)
+	}
+
+	// Execute the pipeline and wait for it to complete
+	_, err = container.Stdout(ctx)
+	if err != nil {
+		return fmt.Errorf("%s integration test failed: %w", test.Name(), err)
+	}
+
+	fmt.Printf("=== Success: %s integration test passed ===\n", test.Name())
+	return nil
+}

test/new-generator.md

@@ -0,0 +1,190 @@
+# Adding a New Generator Integration Test
+
+This guide explains how to add integration tests for a new generator.
+
+## Directory Structure
+
+The integration testing framework has the following directory structure:
+
+```
+test/
+  integration/              # Core integration test framework
+    integration.go          # Test interface definition
+    cmd/                    # Command-line runners and implementations
+      run.go                # Runner for all tests
+      csharp/               # C# specific implementation and runner
+        run.go
+      python/               # Python specific implementation and runner (future)
+        run.go
+  csharp-integration/       # C# test files
+  python-integration/       # Python test files (future)
+```
+
+## Step 1: Create a generator-specific implementation and runner
+
+Create a file at `test/integration/cmd/python/run.go`:
+
+```go
+package main
+
+import (
+ "context"
+ "fmt"
+ "os"
+ "path/filepath"
+ 
+ "dagger.io/dagger"
+ "github.com/open-feature/cli/test/integration"
+)
+
+// Test implements the integration test for the Python generator
+type Test struct {
+ ProjectDir string
+ TestDir    string
+}
+
+// New creates a new Test
+func New(projectDir, testDir string) *Test {
+ return &Test{
+  ProjectDir: projectDir,
+  TestDir:    testDir,
+ }
+}
+
+// Run executes the Python integration test
+func (t *Test) Run(ctx context.Context, client *dagger.Client) (*dagger.Container, error) {
+ // Source code container
+ source := client.Host().Directory(t.ProjectDir)
+ testFiles := client.Host().Directory(t.TestDir, dagger.HostDirectoryOpts{
+  Include: []string{"test_openfeature.py", "requirements.txt"},
+ })
+
+ // Build the CLI
+ cli := client.Container().
+  From("golang:1.24-alpine").
+  WithDirectory("/src", source).
+  WithWorkdir("/src").
+  WithExec([]string{"go", "build", "-o", "cli"})
+
+ // Generate Python client
+ generated := cli.WithExec([]string{
+  "./cli", "generate", "python",
+  "--manifest=/src/sample/sample_manifest.json",
+  "--output=/tmp/generated",
+  "--package=openfeature_test",
+ })
+
+ // Get generated files
+ generatedFiles := generated.Directory("/tmp/generated")
+
+ // Test Python with the generated files
+ pythonContainer := client.Container().
+  From("python:3.11-slim").
+  WithDirectory("/app/openfeature", generatedFiles).
+  WithDirectory("/app/test", testFiles).
+  WithWorkdir("/app").
+  WithExec([]string{"pip", "install", "-r", "test/requirements.txt"}).
+  WithExec([]string{"python", "-m", "pytest", "test/test_openfeature.py", "-v"})
+
+ return pythonContainer, nil
+}
+
+// Name returns the name of the integration test
+func (t *Test) Name() string {
+ return "python"
+}
+
+func main() {
+ ctx := context.Background()
+
+ // Get project root
+ projectDir, err := filepath.Abs(os.Getenv("PWD"))
+ if err != nil {
+  fmt.Fprintf(os.Stderr, "Failed to get project dir: %v\n", err)
+  os.Exit(1)
+ }
+
+ // Get test directory
+ testDir, err := filepath.Abs(filepath.Join(projectDir, "test/python-integration"))
+ if err != nil {
+  fmt.Fprintf(os.Stderr, "Failed to get test dir: %v\n", err)
+  os.Exit(1)
+ }
+
+ // Create and run the Python integration test
+ test := New(projectDir, testDir)
+
+ if err := integration.RunTest(ctx, test); err != nil {
+  fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+  os.Exit(1)
+ }
+}
+```
+
+## Step 2: Add the test to the all-integration runner
+
+Update `test/integration/cmd/run.go` to include your test:
+
+```go
+package main
+
+import (
+ "fmt"
+ "os"
+ "os/exec"
+)
+
+func main() {
+ // Run the generator-specific tests
+ fmt.Println("=== Running all integration tests ===")
+ 
+ // Run the C# integration test
+ csharpCmd := exec.Command("go", "run", "github.com/open-feature/cli/test/integration/cmd/csharp")
+ csharpCmd.Stdout = os.Stdout
+ csharpCmd.Stderr = os.Stderr
+ if err := csharpCmd.Run(); err != nil {
+  fmt.Fprintf(os.Stderr, "Error running C# integration test: %v\n", err)
+  os.Exit(1)
+ }
+ 
+ // Run the Python integration test
+ pythonCmd := exec.Command("go", "run", "github.com/open-feature/cli/test/integration/cmd/python")
+ pythonCmd.Stdout = os.Stdout
+ pythonCmd.Stderr = os.Stderr
+ if err := pythonCmd.Run(); err != nil {
+  fmt.Fprintf(os.Stderr, "Error running Python integration test: %v\n", err)
+  os.Exit(1)
+ }
+ 
+ // Add more tests here as they are available
+ 
+ fmt.Println("=== All integration tests passed successfully ===")
+}
+```
+
+## Step 3: Create test files
+
+Create the following directory structure with your test files:
+
+```
+test/
+  python-integration/
+    requirements.txt
+    test_openfeature.py
+    README.md
+```
+
+## Step 4: Add a Makefile target
+
+Update the Makefile with a new target:
+
+```makefile
+.PHONY: test-python-dagger
+test-python-dagger:
+ @echo "Running Python integration test with Dagger..."
+ @go run ./test/integration/cmd/python/run.go
+```
+
+## Step 5: Update the documentation
+
+Update `test/README.md` to include your new test.

test/nodejs-integration/package-lock.json

@@ -0,0 +1,598 @@
+{
+  "name": "nodejs-integration",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nodejs-integration",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "@openfeature/server-sdk": "^1.18.0"
+      },
+      "devDependencies": {
+        "@types/node": "^20.19.0",
+        "tsx": "^4.0.0",
+        "typescript": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.5.tgz",
+      "integrity": "sha512-9o3TMmpmftaCMepOdA5k/yDw8SfInyzWWTjYTFCX3kPSDJMROQTb8jg+h9Cnwnmm1vOzvxN7gIfB5V2ewpjtGA==",
+      "cpu": [
+        "ppc64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.5.tgz",
+      "integrity": "sha512-AdJKSPeEHgi7/ZhuIPtcQKr5RQdo6OO2IL87JkianiMYMPbCtot9fxPbrMiBADOWWm3T2si9stAiVsGbTQFkbA==",
+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-arm64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.5.tgz",
+      "integrity": "sha512-VGzGhj4lJO+TVGV1v8ntCZWJktV7SGCs3Pn1GRWI1SBFtRALoomm8k5E9Pmwg3HOAal2VDc2F9+PM/rEY6oIDg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-x64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.25.5.tgz",
+      "integrity": "sha512-D2GyJT1kjvO//drbRT3Hib9XPwQeWd9vZoBJn+bu/lVsOZ13cqNdDeqIF/xQ5/VmWvMduP6AmXvylO/PIc2isw==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/darwin-arm64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.25.5.tgz",
+      "integrity": "sha512-GtaBgammVvdF7aPIgH2jxMDdivezgFu6iKpmT+48+F8Hhg5J/sfnDieg0aeG/jfSvkYQU2/pceFPDKlqZzwnfQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/darwin-x64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.25.5.tgz",
+      "integrity": "sha512-1iT4FVL0dJ76/q1wd7XDsXrSW+oLoquptvh4CLR4kITDtqi2e/xwXwdCVH8hVHU43wgJdsq7Gxuzcs6Iq/7bxQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/freebsd-arm64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.25.5.tgz",
+      "integrity": "sha512-nk4tGP3JThz4La38Uy/gzyXtpkPW8zSAmoUhK9xKKXdBCzKODMc2adkB2+8om9BDYugz+uGV7sLmpTYzvmz6Sw==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/freebsd-x64": {
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+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.25.5.tgz",
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+      "license": "MIT",
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+      },
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+      },
+      "engines": {
+        "node": ">=18.0.0"
+      },
+      "optionalDependencies": {
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+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/undici-types": {
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+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "dev": true,
+      "license": "MIT"
+    }
+  }
+}

test/nodejs-integration/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "nodejs-integration",
+  "version": "1.0.0",
+  "description": "Integration test for OpenFeature CLI Node.js generator",
+  "type": "module",
+  "scripts": {
+    "test": "tsx test.ts"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@openfeature/server-sdk": "^1.18.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.19.0",
+    "tsx": "^4.0.0",
+    "typescript": "^5.0.0"
+  },
+  "engines": {
+    "node": ">=22"
+  }
+}

test/nodejs-integration/test.ts

@@ -0,0 +1,99 @@
+import { OpenFeature, JsonValue } from "@openfeature/server-sdk";
+import { existsSync, readdirSync } from 'node:fs';
+import { join, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+// Simple test provider
+class TestProvider {
+    get name() { return 'test-provider'; }
+    get metadata() { return { name: 'test-provider' }; }
+
+    async resolveBooleanEvaluation(flagKey: string, defaultValue: boolean) {
+        return { value: flagKey === 'enableFeatureA' ? true : defaultValue, reason: 'STATIC' };
+    }
+
+    async resolveStringEvaluation(flagKey: string, defaultValue: string) {
+        return { value: flagKey === 'greetingMessage' ? 'Hello from test!' : defaultValue, reason: 'STATIC' };
+    }
+
+    async resolveNumberEvaluation(flagKey: string, defaultValue: number) {
+        const values: Record<string, number> = { usernameMaxLength: 100, discountPercentage: 0.25 };
+        return { value: values[flagKey] ?? defaultValue, reason: 'STATIC' };
+    }
+    async resolveObjectEvaluation<T>(flagKey: string, defaultValue: JsonValue) {
+        const values: Record<string, JsonValue> = {
+            themeCustomization: {
+                primaryColor: '#ff0000',
+                secondaryColor: '#00ff00'
+            } as T
+        };
+        return { value: values[flagKey] ?? defaultValue, reason: 'STATIC' };
+    }
+}
+
+async function main() {
+    try {
+        console.log('🚀 Node.js OpenFeature Integration Test');
+        
+        // 1. Check generated files
+        const generatedDir = join(__dirname, 'generated');
+        if (!existsSync(generatedDir)) {
+            throw new Error('Generated directory not found');
+        }
+
+        const files = readdirSync(generatedDir);
+        const clientFile = files.find(file => file.includes('openfeature'));
+        if (!clientFile) {
+            throw new Error('openfeature.ts not found');
+        }
+        console.log(`✅ Found: ${clientFile}`);
+
+        
+        const clientPath = join(generatedDir, clientFile);
+        
+        // 3. Setup OpenFeature provider and test
+        await OpenFeature.setProvider(new TestProvider());
+        
+       
+        const { getGeneratedClient } = await import(clientPath);
+        const client = getGeneratedClient();
+        
+        console.log('🧪 Testing flags...');
+        
+        // Test each flag
+        const tests = [
+            { name: 'enableFeatureA', expected: 'boolean' },
+            { name: 'greetingMessage', expected: 'string' },
+            { name: 'usernameMaxLength', expected: 'number' },
+            { name: 'discountPercentage', expected: 'number' },
+            { name: 'themeCustomization', expected: 'object' }
+        ];
+
+        for (const test of tests) {
+            if (client[test.name]) {
+                const result = await client[test.name]();
+                const type = typeof result;
+                if (type === test.expected) {
+                    console.log(`✅ ${test.name}: ${result} | type: (${type})`);
+                } else {
+                    throw new Error(`${test.name} returned ${type}, expected ${test.expected}`);
+                }
+            } else {
+                console.log(`⚠️  ${test.name} method not found`);
+                process.exit(1);
+            }
+        }
+
+        console.log('🎉 All tests passed!');
+        process.exit(0);
+
+    } catch (error) {
+        console.error('❌ Test failed:', error.message);
+        process.exit(1);
+    }
+}
+
+main();