WASM Add (@runmu.sh/ext-wasm-add)

The example for mu.wasm.load (SDK 1.3, https://runmu.sh/docs/extensions/wasm). Install it from ☰ → Extensions → Discover (marketplace listing).

• wasm/add.wat is the source of wasm/add.wasm (41 bytes, one exported add(i32, i32) → i32). The binary is committed, so the build needs no wat2wasm or Rust toolchain.
• package.json lists it in muclient.wasm with its sha256, and files includes wasm/, so it ships in the package. μClient refuses bytes that do not match that hash, pins it at install and re-checks it on every load.
• activate awaits mu.wasm.load('wasm/add.wasm'), then registers a panel that calls add.

Commands

npm install
npm run build        # dist/index.js + manifest check
npm run typecheck    # tsc --noEmit against the SDK types
npm run dev          # dev server on http://localhost:5199/ with hot reload

After editing add.wat, rebuild the binary (wat2wasm wasm/add.wat -o wasm/add.wasm) and put its new sha256 in muclient.wasm.

Publish

This repository is linked to the marketplace listing wasm-add: a version tag is imported within seconds (webhook), or within 30 minutes (poll).

npm run build && git commit -am "WASM Add x.y.z" && git tag vx.y.z && git push origin main vx.y.z

Versions are immutable.