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Feature comparison of `grpc` and `@grpc/grpc-js` packages

Feature	`grpc`	`@grpc/grpc-js`
Client	✔️	✔️
Server	✔️	✔️
Unary RPCs	✔️	✔️
Streaming RPCs	✔️	✔️
Deadlines	✔️	✔️
Cancellation	✔️	✔️
Automatic Reconnection	✔️	✔️
Per-message Compression	✔️	only for response messages
Channel State	✔️	✔️
JWT Access and Service Account Credentials	provided by the Google Auth Library	provided by the Google Auth Library
Interceptors	✔️	✔️
Connection Keepalives	✔️	✔️
HTTP Connect Support	✔️	✔️
Retries	✔️	❌
Stats/tracing/monitoring	✔️	❌
Load Balancing	✔️	Pick first and round robin
Initial Metadata Options	✔️	only `waitForReady`

Other Properties	`grpc`	`@grpc/grpc-js`
Pure JavaScript Code	❌	✔️
Supported Node Versions	>= 4	^8.13.0 or >=10.10.0
Supported Electron Versions	All	>= 3
Supported Platforms	Linux, Windows, MacOS	All
Supported Architectures	x86, x86-64, ARM7+	All

In addition, all channel arguments defined in this header file are handled by the grpc library. Of those, the following are handled by the @grpc/grpc-js library:

grpc.ssl_target_name_override
grpc.primary_user_agent
grpc.secondary_user_agent
grpc.default_authority
grpc.keepalive_time_ms
grpc.keepalive_timeout_ms
grpc.service_config
grpc.max_concurrent_streams
grpc.initial_reconnect_backoff_ms
grpc.max_reconnect_backoff_ms
grpc.use_local_subchannel_pool
grpc.max_send_message_length
grpc.max_receive_message_length
grpc.enable_http_proxy
channelOverride
channelFactoryOverride