It appears that the official chrome webstore extension by Rob W is outdated.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

return createSandboxBundle(defines, {
        disableVersionInfo: true,
      }).pipe(gulp.dest(sandboxDir));
    }
  )
);
gulp.task(
  "server",
  gulp.parallel(
    function watchDevCSS() {
      gulp.watch(
        ["web/*.css", "web/images/*"],
        { ignoreInitial: false },
        gulp.series("dev-css")
      );
    },
    function watchDevFitCurve() {
      gulp.watch(
        ["src/display/editor/*"],
        { ignoreInitial: false },
        gulp.series("dev-fitCurve")
      );
    },
    function watchDevSandbox() {
      gulp.watch(
        [
          "src/pdf.{sandbox,sandbox.external,scripting}.js",
          "src/scripting_api/*.js",
          "src/shared/scripting_utils.js",
          "external/quickjs/*.js",