The prebuilt files include `web/pdf_viewer.js` with some viewer APIs. Those are missing from type declarations.
],
        { ignoreInitial: false },
        gulp.series("dev-sandbox")
      );
    },
    function createServer() {
      console.log();
      console.log("### Starting local server");
      const WebServer = require("./test/webserver.js").WebServer;
      const server = new WebServer();
      server.port = 8888;
      server.start();
    }
  )
);
gulp.task("clean", function (done) {
  console.log();
  console.log("### Cleaning up project builds");
  rimraf(BUILD_DIR, done);
});
gulp.task("importl10n", function (done) {
  const locales = require("./external/importL10n/locales.js");
  console.log();
  console.log("### Importing translations from mozilla-central");
  if (!fs.existsSync(L10N_DIR)) {
    fs.mkdirSync(L10N_DIR);
  }
  locales.downloadL10n(L10N_DIR, done);
});
function ghPagesPrepare() {