WASM Language Server Example

An example demonstrating how to implement a Language Server in WebAssembly and run it in VS Code.

Functionality

A simple language server that has a dummy got definition method and response to a custom message.

Pre-requisites

To run the sample the following tool chains need to be installed

• Rust: installation instructions can be found here

Running the Sample in the Desktop

• Run npm install in this folder. This installs all necessary npm modules.
• Open VS Code on this folder.
• Execute the launch config Run Example.

Running the Sample in the Web

As a pre-requisite follow the instructions here to generate necessary certificate to side load the extension into vscode.dev or insiders.vscode.dev.

Then compile the extension for the Web by running npm run esbuild, start a local extension server using npm run serve, open vscode.dev or insiders.vscode.dev in a browser and execute the command Install Extension from Location. As a location use https://localhost:5000.