sdk-javascript/pr_guidelines.md

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# Pull Request Guidelines
Here you will find step by step guidance for creating, submitting and updating
a pull request in this repository. We hope it will help you have an easy time
managing your work and a positive, satisfying experience when contributing
your code. Thanks for getting involved! :rocket:
- [Pull Request Guidelines](#pull-request-guidelines)
- [Getting Started](#getting-started)
- [Branches](#branches)
- [Commit Messages](#commit-messages)
- [Signing your commits](#signing-your-commits)
- [Staying Current with `main`](#staying-current-with-main)
- [Style Guide](#style-guide)
- [Submitting and Updating Your Pull Request](#submitting-and-updating-your-pull-request)
- [Congratulations!](#congratulations)
## Getting Started
When creating a pull request, first fork this repository and clone it to your
local development environment. Then add this repository as the upstream.
```console
git clone https://github.com/mygithuborg/sdk-javascript.git
cd sdk-javascript
git remote add upstream https://github.com/cloudevents/sdk-javascript.git
```
## Branches
The first thing you'll need to do is create a branch for your work.
If you are submitting a pull request that fixes or relates to an existing
GitHub issue, you can use this in your branch name to keep things organized.
For example, if you were to create a pull request to fix
[this error with `httpAgent`](https://github.com/cloudevents/sdk-javascript/issues/48)
you might create a branch named `48-fix-http-agent-error`.
```console
git fetch upstream
git reset --hard upstream/main
git checkout FETCH_HEAD
git checkout -b 48-fix-http-agent-error
```
## Commit Messages
Please follow the
[Conventional Commits specification](https://www.conventionalcommits.org/en/v1.0.0/#summary).
The first line of your commit should be prefixed with a type, be a single
sentence with no period, and succinctly indicate what this commit changes.
All commit message lines should be kept to fewer than 80 characters if possible.
An example of a good commit message.
```log
docs: remove 0.1, 0.2 spec support from README
```
If you are unsure what prefix to use for a commit, you can consult the
[package.json](package.json) file.
In the `standard-version.types` section, you can see all of the commit
types that will be committed to the changelog based on the prefix in the first line of
your commit message. For example, the commit message:
```log
fix: removed a bug that was causing the rotation of the earth to change
```
will show up in the "Bug Fixes" section of the changelog for a given release.
### Signing your commits
Each commit must be signed. Use the `--signoff` flag for your commits.
```console
git commit --signoff
```
This will add a line to every git commit message:
Signed-off-by: Joe Smith <joe.smith@email.com>
Use your real name (sorry, no pseudonyms or anonymous contributions.)
The sign-off is a signature line at the end of your commit message. Your
signature certifies that you wrote the patch or otherwise have the right to pass
it on as open-source code. See [developercertificate.org](http://developercertificate.org/)
for the full text of the certification.
Be sure to have your `user.name` and `user.email` set in your git config.
If your git config information is set properly then viewing the `git log`
information for your commit will look something like this:
```
Author: Joe Smith <joe.smith@email.com>
Date: Thu Feb 2 11:41:15 2018 -0800
Update README
Signed-off-by: Joe Smith <joe.smith@email.com>
```
Notice the `Author` and `Signed-off-by` lines match. If they don't your PR will
be rejected by the automated DCO check.
## Staying Current with `main`
As you are working on your branch, changes may happen on `main`. Before
submitting your pull request, be sure that your branch has been updated
with the latest commits.
```console
git fetch upstream
git rebase upstream/main
```
This may cause conflicts if the files you are changing on your branch are
also changed on main. Error messages from `git` will indicate if conflicts
exist and what files need attention. Resolve the conflicts in each file, then
continue with the rebase with `git rebase --continue`.
If you've already pushed some changes to your `origin` fork, you'll
need to force push these changes.
```console
git push -f origin 48-fix-http-agent-error
```
## Style Guide
Code style for this module is maintained using [`eslint`](https://www.npmjs.com/package/eslint).
When you run tests with `npm test` linting is performed first. If you want to
check your code style for linting errors without running tests, you can just
run `npm run lint`. If there are errors, you can usually fix them automatically
by running `npm run fix`.
Linting rules are declared in [.eslintrc](https://github.com/cloudevents/sdk-javascript/blob/main/.eslintrc).
## Submitting and Updating Your Pull Request
Before submitting a pull request, you should make sure that all of the tests
successfully pass by running `npm test`.
Once you have sent your pull request, `main` may continue to evolve
before your pull request has landed. If there are any commits on `main`
that conflict with your changes, you may need to update your branch with
these changes before the pull request can land. Resolve conflicts the same
way as before.
```console
git fetch upstream
git rebase upstream/main
# fix any potential conflicts
git push -f origin 48-fix-http-agent-error
```
This will cause the pull request to be updated with your changes, and
CI will rerun.
A maintainer may ask you to make changes to your pull request. Sometimes these
changes are minor and shouldn't appear in the commit log. For example, you may
have a typo in one of your code comments that should be fixed before merge.
You can prevent this from adding noise to the commit log with an interactive
rebase. See the [git documentation](https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History)
for details.
```console
git commit -m "fixup: fix typo"
git rebase -i upstream/main # follow git instructions
```
Once you have rebased your commits, you can force push to your fork as before.
## Congratulations!
Congratulations! You've done it! We really appreciate the time and energy
you've given to the project. Thank you.