On https://github.com/mozilla/pdf.js/wiki/Required-Browser-Features we mention required browser features for PDF.js, but I have the feeling that not all of them are necessary nowadays since we moved to using more modern features over the years. Moreover, as indicated in https://github.com/mozilla/pdf.js/issues/11950#issuecomment-637149085, some features may be missing such as range requests or `async/await`.

In short, we should verify which are still necessary and update the wiki page and the automated feature detection if possible.
return gulp
    .src(dir + "**")
    .pipe(zip(targetName))
    .pipe(gulp.dest(BUILD_DIR))
    .on("end", function () {
      console.log("Built distribution file: " + targetName);
    });
}
gulp.task(
  "publish",
  gulp.series("generic", "generic-legacy", function (done) {
    var version = JSON.parse(
      fs.readFileSync(BUILD_DIR + "version.json").toString()
    ).version;
    config.stableVersion = config.betaVersion;
    config.betaVersion = version;
    return merge([