How do you resolve the npm install error caused by a conflict between webpack@4.47.0 and node-polyfill-webpack-plugin@4.0.0, which requires webpack@>=5, when working with Payload CMS?

The error occurs because node-polyfill-webpack-plugin@4.0.0 requires webpack@>=5, while the project uses webpack@4.47.0. To resolve this, the webpack configuration in payload.config.ts needs to be updated to include the required fallbacks and aliases, which allow the project to continue functioning without upgrading to webpack@5. Here’s how it can be resolved:

1. Update the webpack configuration inside the payload.config.ts file.
2. Add necessary fallbacks and aliases for specific modules that are missing or conflicting in the environment.

Here’s the code to add to payload.config.ts:

webpack: config => ({
  ...config,
  resolve: {
    ...config.resolve,
    fallback: {
      ...config.resolve.fallback,
      "net": false,
      "tls": false,
      "stream": require.resolve("stream-browserify"),
      "os": require.resolve("os-browserify/browser"),
      "fs": false,
      "querystring": require.resolve("querystring-es3"),
    },
    alias: {
      ...config.resolve.alias,
      dotenv: path.resolve(__dirname, './dotenv.js'),
      [path.resolve(__dirname, './endpoints/seed')]: path.resolve(
        __dirname,
        './emptyModuleMock.js',
      ),
    },
  },
}),