multithreading/src/browser/polyfill.js

The missing standard library for multithreading in JavaScript (Works in the browser, Node.js, Deno, Bun).

// @ts-nocheck This is a polyfill file
if (typeof globalThis.SharedArrayBuffer === "undefined") {
    globalThis.SharedArrayBuffer = class SharedArrayBuffer {
        constructor() {
            throw new Error("SharedArrayBuffer is unavailable because of insufficient security headers. Please ensure that your page is Cross-Origin Isolated (COOP) and that your server sends the following headers: Cross-Origin-Opener-Policy: same-origin; Cross-Origin-Embedder-Policy: require-corp");
        }
    };
}