WebAssembly，通过AssemblyScript编写wasm

npm init -y
npm install assemblyscript --save-dev
npx asinit .

export function add(a: i32, b: i32): i32 {
  return a + b;
}

npm run asbuild

asc assembly/index.ts --outFile build/release.wasm --optimize

async function instantiate(module, imports = {}) {
  const { exports } = await WebAssembly.instantiate(module, imports);
  return exports;
}
export const {
  memory,
  add,
  add2,
} = await (async url => instantiate(
  await (async () => {
    const isNodeOrBun = typeof process != "undefined" && process.versions != null && (process.versions.node != null || process.versions.bun != null);
    if (isNodeOrBun) { return globalThis.WebAssembly.compile(await (await import("node:fs/promises")).readFile(url)); }
    else { return await globalThis.WebAssembly.compileStreaming(globalThis.fetch(url)); }
  })(), {
  }
))(new URL("release.wasm", import.meta.url));

<script type="module">
    import { add, add2 } from "./build/release.js";
    document.body.innerText = add(1, 2);
    document.body.innerText += "," + add2(2, 2);
</script>

npm start