🚨 Fix "global is not defined" Error in Angular 15+ – Step-by-Step Guide

🚨 **Fix "global is not defined" Error in Angular 15+ – Step-by-Step Guide**

In this tutorial, I’ll show you how to fix the **"Uncaught ReferenceError: global is not defined"** issue that may arise in Angular 15+ projects, especially when working with libraries that expect Node.js-like environments (e.g., WebSockets, STOMP.js). Follow these steps to add the necessary polyfills and configure your Angular project for seamless execution.

### Steps:

1. **Install the required polyfill packages**:

   To provide polyfills for `global` and `process` in a browser environment, install the `global` and `process` packages.

   ```bash

   npm install global process --save

   ```

2. **Update `package.json`**:

   Add the following entry in your `package.json` file to include the polyfills in the browser environment.

   ```json

   "browser": {

     "global": "global",

     "process": "process/browser"

   }

   ```

3. **Update `angular.json`**:

   In the `angular.json` file, add the polyfills reference in the `polyfills` section to ensure they are included in the build process.

   ```json

   "polyfills": [

     "zone.js",

     "src/polyfills.ts"

   ]

   ```

4. **Create or update `polyfills.ts`**:

   In your `src` directory, create a `polyfills.ts` file with the following content to define `global`:

   ```typescript

   // src/polyfills.ts

   (window as any).global = window;

   ```

5. **Ensure `polyfills.ts` is included in `tsconfig.app.json`**:

   Lastly, update your `tsconfig.app.json` to include `polyfills.ts` in the `files` array.

   ```json

   "files": [

     "src/main.ts",

     "src/polyfills.ts"

   ]

   ```

After these steps, your Angular 15+ project will recognize `global` and `process`, resolving the error and allowing your app to run smoothly.

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