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2026-03-10 19:37:31 +03:30
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--- a/examples/with-web-worker/.gitignore
+++ b/examples/with-web-worker/.gitignore
@@ -0,0 +1,40 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
--- a/examples/with-web-worker/README.md
+++ b/examples/with-web-worker/README.md
@@ -0,0 +1,25 @@
+# WebWorker example
+
+This example shows how to run code in WebWorkers by utilizing [webpack 5](https://nextjs.org/docs/messages/webpack5).
+
+## Deploy your own
+
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-web-worker&project-name=with-web-worker&repository-name=with-web-worker)
+
+## How to use
+
+Execute [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app) with [npm](https://docs.npmjs.com/cli/init), [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/), or [pnpm](https://pnpm.io) to bootstrap the example:
+
+```bash
+npx create-next-app --example with-web-worker with-web-worker-app
+```
+
+```bash
+yarn create next-app --example with-web-worker with-web-worker-app
+```
+
+```bash
+pnpm create next-app --example with-web-worker with-web-worker-app
+```
+
+Deploy it to the cloud with [Vercel](https://vercel.com/new?utm_source=github&utm_medium=readme&utm_campaign=next-example) ([Documentation](https://nextjs.org/docs/deployment)).
--- a/examples/with-web-worker/app/layout.tsx
+++ b/examples/with-web-worker/app/layout.tsx
@@ -0,0 +1,16 @@
+export const metadata = {
+  title: "Next.js",
+  description: "Generated by Next.js",
+};
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <html lang="en">
+      <body>{children}</body>
+    </html>
+  );
+}
--- a/examples/with-web-worker/app/page.tsx
+++ b/examples/with-web-worker/app/page.tsx
@@ -0,0 +1,26 @@
+"use client";
+import { useEffect, useRef, useCallback } from "react";
+
+export default function Index() {
+  const workerRef = useRef<Worker>();
+
+  useEffect(() => {
+    workerRef.current = new Worker(new URL("../worker.ts", import.meta.url));
+    workerRef.current.onmessage = (event: MessageEvent<number>) =>
+      alert(`WebWorker Response => ${event.data}`);
+    return () => {
+      workerRef.current?.terminate();
+    };
+  }, []);
+
+  const handleWork = useCallback(async () => {
+    workerRef.current?.postMessage(100000);
+  }, []);
+
+  return (
+    <>
+      <p>Do work in a WebWorker!</p>
+      <button onClick={handleWork}>Calculate PI</button>
+    </>
+  );
+}
--- a/examples/with-web-worker/package.json
+++ b/examples/with-web-worker/package.json
@@ -0,0 +1,19 @@
+{
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start"
+  },
+  "dependencies": {
+    "next": "latest",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@types/node": "^22.5.4",
+    "@types/react": "^18.3.5",
+    "@types/react-dom": "^18.3.0",
+    "typescript": "^5.6.2"
+  }
+}
--- a/examples/with-web-worker/tsconfig.json
+++ b/examples/with-web-worker/tsconfig.json
@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "react-jsx",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}
--- a/examples/with-web-worker/utils/pi.ts
+++ b/examples/with-web-worker/utils/pi.ts
@@ -0,0 +1,9 @@
+// https://stackoverflow.com/a/39575124
+export default function pi(n: number) {
+  let v = 0;
+  for (let i = 1; i <= n; i += 4) {
+    // increment by 4
+    v += 1 / i - 1 / (i + 2); // add the value of the series
+  }
+  return 4 * v; // apply the factor at last
+}
--- a/examples/with-web-worker/worker.ts
+++ b/examples/with-web-worker/worker.ts
@@ -0,0 +1,6 @@
+// This is a module worker, so we can use imports (in the browser too!)
+import pi from "./utils/pi";
+
+addEventListener("message", (event: MessageEvent<number>) => {
+  postMessage(pi(event.data));
+});