mirror of https://github.com/coder/code-server.git
155 lines
5.1 KiB
Markdown
155 lines
5.1 KiB
Markdown
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
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<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
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# Contributing
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- [Pull Requests](#pull-requests)
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- [Requirements](#requirements)
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- [Development Workflow](#development-workflow)
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- [Build](#build)
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- [Structure](#structure)
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- [Modifications to VS Code](#modifications-to-vs-code)
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- [Currently Known Issues](#currently-known-issues)
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<!-- END doctoc generated TOC please keep comment here to allow auto update -->
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- [Detailed CI and build process docs](../ci)
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## Pull Requests
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Please create a [GitHub Issue](https://github.com/cdr/code-server/issues) for each issue
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you'd like to address unless the proposed fix is minor.
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In your Pull Requests (PR), link to the issue that the PR solves.
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Please ensure that the base of your PR is the **master** branch. (Note: The default
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GitHub branch is the latest release branch, though you should point all of your changes to be merged into
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master).
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## Requirements
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The prerequisites for contributing to code-server are almost the same as those for
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[VS Code](https://github.com/Microsoft/vscode/wiki/How-to-Contribute#prerequisites).
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There are several differences, however. You must:
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- Use Node.js version 12.x (or greater)
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- Have [yarn](https://classic.yarnpkg.com/en/) installed (which is used to install JS packages and run development scripts)
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- Have [nfpm](https://github.com/goreleaser/nfpm) (which is used to build `.deb` and `.rpm` packages and [jq](https://stedolan.github.io/jq/) (used to build code-server releases) installed
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The [CI container](../ci/images/debian8/Dockerfile) is a useful reference for all
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of the dependencies code-server uses.
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## Development Workflow
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```shell
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yarn
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yarn watch
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# Visit http://localhost:8080 once the build is completed.
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```
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To develop inside an isolated Docker container:
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```shell
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./ci/dev/image/run.sh yarn
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./ci/dev/image/run.sh yarn watch
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```
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`yarn watch` will live reload changes to the source.
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## Build
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You can build using:
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```shell
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./ci/dev/image/run.sh ./ci/steps/release.sh
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```
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Run your build with:
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```shell
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cd release
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yarn --production
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# Runs the built JavaScript with Node.
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node .
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```
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Build the release packages (make sure that you run `./ci/steps/release.sh` first):
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```shell
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IMAGE=centos7 ./ci/dev/image/run.sh ./ci/steps/release-packages.sh
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# The standalone release is in ./release-standalone
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# .deb, .rpm and the standalone archive are in ./release-packages
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```
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The `release.sh` script is equal to running:
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```shell
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yarn
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yarn build
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yarn build:vscode
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yarn release
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```
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And `release-packages.sh` is equal to:
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```shell
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yarn release:standalone
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yarn test:standalone-release
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yarn package
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```
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For a faster release build, you can run instead:
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```shell
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KEEP_MODULES=1 ./ci/steps/release.sh
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node ./release
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```
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## Structure
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The `code-server` script serves an HTTP API for login and starting a remote VS Code process.
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The CLI code is in [./src/node](./src/node) and the HTTP routes are implemented in
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[./src/node/app](./src/node/app).
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Most of the meaty parts are in the VS Code portion of the codebase under [./lib/vscode](./lib/vscode), which we described next.
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### Modifications to VS Code
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In v1 of code-server, we had a patch of VS Code that split the codebase into a front-end
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and a server. The front-end consisted of all UI code, while the server ran the extensions
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and exposed an API to the front-end for file access and all UI needs.
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Over time, Microsoft added support to VS Code to run it on the web. They have made
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the front-end open source, but not the server. As such, code-server v2 (and later) uses
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the VS Code front-end and implements the server. We do this by using a git subtree to fork and modify VS Code. This code lives under [./lib/vscode](./lib/vscode).
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Some noteworthy changes in our version of VS Code:
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- Adding our build file, which includes our code and VS Code's web code
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- Allowing multiple extension directories (both user and built-in)
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- Modifying the loader, websocket, webview, service worker, and asset requests to
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use the URL of the page as a base (and TLS, if necessary for the websocket)
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- Sending client-side telemetry through the server
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- Allowing modification of the display language
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- Making it possible for us to load code on the client
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- Making extensions work in the browser
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- Making it possible to install extensions of any kind
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- Fixing issue with getting disconnected when your machine sleeps or hibernates
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- Adding connection type to web socket query parameters
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As the web portion of VS Code matures, we'll be able to shrink and possibly
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eliminate our modifications. In the meantime, upgrading the VS Code version requires
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us to ensure that our changes are still applied and work as intended. In the future,
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we'd like to run VS Code unit tests against our builds to ensure that features
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work as expected.
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**Note**: We have [extension docs](../ci/README.md) on the CI and build system.
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If the functionality you're working on does NOT depend on code from VS Code, please
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move it out and into code-server.
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### Currently Known Issues
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- Creating custom VS Code extensions and debugging them doesn't work
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- Extension profiling and tips are currently disabled
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