In Webpack 5, the [recommended way](https://webpack.js.org/guides/web-workers/) to create a web worker is

```ts
new Worker(new URL('./worker.js', import.meta.url));
```

Could we update\* the [`pdfjs-dist/webpack` entrypoint](https://github.com/mozilla/pdfjs-dist/blob/master/webpack.js) to use this syntax instead of the legacy `worker-loader`? One of the Webpack contributors told me that `worker-loader` uses "magic" and can cause issues.

\* To maintain compatibility with people still using Webpack 4, we should probably introduce a new entrypoint called `pdfjs-dist/webpack5` (or something like that) rather than changing the existing entrypoint.

Can attempt a PR if you would like.

Closely-related: https://github.com/mozilla/pdf.js/issues/15302


options: {
            rootPath: __dirname,
            saveComments: false,
            defines: bundleDefines,
          },
        },
      ],
    },
    
    
    node: false,
  };
}
function webpack2Stream(webpackConfig) {
  
  return webpackStream(webpackConfig, webpack2);
}
function getVersionJSON() {
  return JSON.parse(fs.readFileSync(BUILD_DIR + "version.json").toString());
}
function checkChromePreferencesFile(chromePrefsPath, webPrefs) {
  const chromePrefs = JSON.parse(fs.readFileSync(chromePrefsPath).toString());
  const chromePrefsKeys = Object.keys(chromePrefs.properties).filter(key => {
    const description = chromePrefs.properties[key].description;
    
    
    
    return !description || !description.startsWith("DEPRECATED.");
  });
  chromePrefsKeys.sort();