async-await-1.js

async function someAsyncFn(thing)  {
  var value = await thing;
  console.log("await value", value);
}

async-await-2.js

function someAsyncFn$$module$src$dev$demo$es6(thing) {
  /**
 @suppress {uselessCode}
 */
  function $jscomp$async$generator() {
    function $jscomp$generator$impl(
      $jscomp$generator$action$arg,
      $jscomp$generator$next$arg,
      $jscomp$generator$throw$arg
    ) {
      for (; 1; ) {
        switch ($jscomp$generator$state) {
          case 0:
            $jscomp$generator$state = 1;
            return { value: thing, done: false };
          case 1:
            if (!($jscomp$generator$action$arg == 1)) {
              $jscomp$generator$state = 2;
              break;
            }
            $jscomp$generator$state = -1;
            throw $jscomp$generator$throw$arg;
          case 2:
            $jscomp$generator$next$arg0 = $jscomp$generator$next$arg;
            value = $jscomp$generator$next$arg0;
            console.log("await value", value);
            $jscomp$generator$state = -1;
          default:
            return { value: undefined, done: true };
        }
      }
    }
    var $jscomp$generator$state = 0;
    var value;
    var $jscomp$generator$next$arg0;
    var iterator = {
      next: function(arg) {
        return $jscomp$generator$impl(0.0, arg, undefined);
      },
      throw: function(arg) {
        return $jscomp$generator$impl(1.0, undefined, arg);
      },
      return: function(arg) {
        throw Error("Not yet implemented");
      }
    };
    $jscomp.initSymbolIterator();
    /**
 @this {!Generator<?>}
 */
    iterator[Symbol.iterator] = function() {
      return this;
    };
    return iterator;
  }
  return $jscomp.executeAsyncGenerator($jscomp$async$generator());
}