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Development

Building locally

Emscripten

At the moment, we require emscripten version 2.0.24 to build the project, because tree-sitter-pkl is incompatible with .wasm modules built using newer versions.

The easiest way to set up emscripten is through emsdk. Clone the project down, and within the repo, run ./emsdk install 2.0.24 && ./emsdk activate 2.0.24.

Building the extension

To install all NPM dependencies, run npm install.

To build the extension, run npm run package. This will build a .vsix bundle and place it into .dist/vscode/pkl-vscode.

To install the extension locally, run npm run installextension.

Developing locally

To develop locally, there is a "Launch Extension" task. In VSCode, navigate to the "Run and Debug" pane, and select "Launch Extension" to launch an extension host instance of VSCode.

Prior to launching, ensure the project environment is set up by running npm run build:local.

The local development environment requires that the esbuild Problem Matchers plugin is installed into VSCode.