vscode/extensions/json-language-features/CONTRIBUTING.md

Setup

• Clone Microsoft/vscode
• Run yarn at /, this will install
  • Dependencies for /extension/json-language-features/
  • Dependencies for /extension/json-language-features/server/
  • devDependencies such as gulp
• Open /extensions/json-language-features/ as the workspace in VS Code
• Run the Launch Extension debug target in the Debug View. This will:
  • Launch the preLaunchTask task to compile the extension
  • Launch a new VS Code instance with the json-language-features extension loaded
  • You should see a notification saying the development version of json-language-features overwrites the bundled version of json-language-features
  • Open a .json file to activate the extension. The extension will start a JSON language server process.
  • You can debug the language server process by using Attach to Node Process command in the first VS Code window.
• Test the behavior of this extension by editing json files
• Run Reload Window command in the launched instance to reload the extension

Contribute to vscode-json-languageservice

Microsoft/vscode-json-languageservice contains the language smarts for json. This extension wraps the json language service into a Language Server for VS Code. If you want to fix json issues or make improvements, you should make changes at Microsoft/vscode-json-languageservice.

However, within this extension, you can run a development version of vscode-json-languageservice to debug code or test language features interactively:

Linking vscode-json-languageservice in json-language-features/server/

• Clone Microsoft/vscode-json-languageservice
• Run yarn in vscode-json-languageservice
• Run yarn link in vscode-json-languageservice. This will compile and link vscode-json-languageservice
• In json-language-features/server/, run npm link vscode-json-languageservice

Testing the development version of vscode-json-languageservice

• Open both vscode-json-languageservice and this extension in a single workspace with multi-root workspace feature
• Run yarn watch at json-languagefeatures/server/ to recompile this extension with the linked version of vscode-json-languageservice
• Make some changes in vscode-json-languageservice
• Now when you run Launch Extension debug target, the launched instance will use your development version of vscode-json-languageservice. You can interactively test the language features.