It appears that the official chrome webstore extension by Rob W is outdated. It was last updated in 2019. 

return gulp.src(["external/bcmaps/*.bcmap", "external/bcmaps/LICENSE"], {
    base: "external/bcmaps",
  });
}
function createStandardFontBundle() {
  return gulp.src(
    [
      "external/standard_fonts/*.pfb",
      "external/standard_fonts/*.ttf",
      "external/standard_fonts/LICENSE_FOXIT",
      "external/standard_fonts/LICENSE_LIBERATION",
    ],
    {
      base: "external/standard_fonts",
    }
  );
}
function checkFile(filePath) {