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


console.log(
          "This is not a Git repository; using default build number."
        );
      }
      console.log("Extension build number: " + buildNumber);
      const version = config.versionPrefix + buildNumber;
      exec('git log --format="%h" -n 1', function (err2, stdout2, stderr2) {
        let buildCommit = "";
        if (!err2) {
          buildCommit = stdout2.replace("\n", "");
        }
        createStringSource(
          "version.json",
          JSON.stringify(
            {
              version,
              build: buildNumber,
              commit: buildCommit,
            },
            null,
            2
          )
        )
          .pipe(gulp.dest(BUILD_DIR))
          .on("end", done);
      });
    }
  );
}
function buildDefaultPreferences(defines, dir) {