@vscode/wasm-wasi

WASM WASI Core API

This npm module implements an API facade for the WASM WASI Core VS Code extension.

History

0.11.0

With release version 0.11.0 the implementation details of the WASM support for VS Code has changed. This npm module is now a facade around the wasm-wasi-core VS Code extension.

Example

The source code of the example can be found here

First we need to define a package.json for the extension that wants to execute a WASM process:

{
	"name": "...",
	...
	// depend on the wasm-wasi-core extension
	"extensionDependencies": [
		"ms-vscode.wasm-wasi-core"
	],
	// Depend on the wasm-wasi facade npm module to get easier API access to the
	// core extension.
	"dependencies": {
		"@vscode/wasm-wasi": "..."
	},
}

The actual source code to execute a WASM process looks like this

// Load the WASM API
const wasm: Wasm = await Wasm.api();

const pty = wasm.createPseudoterminal();
const terminal = window.createTerminal({ name: 'My Example', pty, isTransient: true });
terminal.show(true);
const module = await WebAssembly.compile(await fs.readFile(...);
const process = await wasm.createProcess('hello', module, { stdio: pty.stdio });
await process.run();