Installation & Requirements

Install

pnpm add wasm-memx
# or
npm install wasm-memx
# or
yarn add wasm-memx

Browser: Cross-Origin Isolation (COOP/COEP)

SharedArrayBuffer requires cross-origin isolation in browsers. In development, you can add headers on your dev server:

// vite.config.js (dev)
export default {
  server: {
    headers: {
      "Cross-Origin-Opener-Policy": "same-origin",
      "Cross-Origin-Embedder-Policy": "require-corp",
    },
  },
};

See example: examples/web/vite.config.js:1.

Node.js

No COOP/COEP is needed in Node.js. Recommended Node version: >= 18.

Check support

const supported = typeof SharedArrayBuffer !== "undefined";
console.log("SharedArrayBuffer supported:", supported);