message: Fix a ESM bug in build script
diff: @@ -11,7 +11,7 @@ const log = console.log.bind(console);
  * @param {string} url
  * @return {Promise<Buffer>}
  */
  -async function fetchUrl(url) {
  +export async function fetchUrl(url) {
  log(`Downloading ${url}`);
  return new Promise( (resolve, reject) => {
  https.get(url, {}, (resp) => {
  @@ -37,4 +37,3 @@ async function fetchUrl(url) {
  });
  });
  }
  -exports.fetchUrl = fetchUrl;
  