Hack for Visual Studio Code

This extension adds rich Hack language & HHVM support to Visual Studio Code. Visit http://hacklang.org to get started with Hack.

It is published in the Visual Studio Marketplace here. To install, search for "Hack" in the VS Code extensions tab or run the following command (⌘+P): ext install vscode-hack.

Latest releases

v0.8

• HHVM Debugger (Alpha version) — Launch scripts or attach to an HHVM server straight from VS Code. See the debugger doc for details on setup and usage. This is a very early release. Please file any bugs at the Issues page.
• Hack coverage check works again. A new icon in the editor status bar shows % coverage for the file and can be clicked to highlight uncovered areas. (Can be disabled by setting "hack.enableCoverageCheck": false)
• Updated Hack language syntax to the latest version
• Removed some unnecessary PHP snippets
• Fixed file path mapping in typechecker requests & responses to use the correct scheme (thanks @fredemmott for the thorough investigation)
• Documents are now recognized as Hack if they start with a shebang pointing to an HHVM executable (e.g. #!/usr/bin/hhvm), regardless of extension
• Syntax highlighting for .hhconfig file
• Added support for showing related messages for an error when running in non-LSP mode

See the full list of releases and features added on the Github releases page as well as the project changelog.

Features

• Type Checking
• Autocomplete
• Hover Hints
• Document Symbol Outline
• Workspace Symbol Search
• Document Formatting
• Go To/Peek Definition
• Find All References
• Hack Coverage Check
• Debugger Support

Requirements

This extension is supported on Linux and Mac OS X 10.10 onwards (see HHVM compatibility). The latest versions of Hack typechecking tools (hh_client and hh_server) are required on the local machine. The workspace should have a .hhconfig file at its root.

Configuration

This extension adds the following Visual Studio Code settings. These can be set in user preferences (⌘+,) or workspace settings (.vscode/settings.json).

• hack.clientPath: Absolute path to the hh_client executable. This can be left empty if hh_client is already in your environment $PATH. A docker exec command is supported as well.
• hack.workspaceRootPath: Absolute path to the workspace root directory. This will be the VS Code workspace root by default, but can be changed if the project is in a subdirectory or mounted in a Docker container.
• hack.enableCoverageCheck: Enable calculation of Hack type coverage percentage for every file and display in status bar (default: true).
• hack.useLanguageServer: Start hh_client in Language Server mode. Only works for HHVM version 3.23 and above (default: true).

Docker

The extension can be used in a contanerized development environment. Simply configure clientPath to be a docker exec command and specify a workspaceRootPath mapping.

E.g. if your container was started using

$ docker run -d -t --name my-hhvm -v /home/user/repos/project:/mnt/project hhvm/hhvm:latest

Configure

"hack.clientPath": "docker exec -i my-hhvm hh_client",
"hack.workspaceRootPath": "/mnt/project"

Issues

Please file all bugs, issues, feature requests etc. at the GitHub issues page.

Contributing

There are lots of ways to help! You can file new bugs and feature requests, or fix a pending one. To contribute to the source code, fork the repository on GitHub and create a pull request. Check out the VS Code extension development guide to get started.

License

The source code for this extension is hosted at https://github.com/PranayAgarwal/vscode-hack and is available under the MIT license.