fix some formatting and closure linting

Author: dfreedm

externs/closure-types.js

@@ -154,4 +154,8 @@
    * }}
    */
   let TemplatizeOptions;
+
+
+  /** @typedef {{run: function(function(), number=):number, cancel: function(number)}} */
+  let AsyncInterface;
 </script>

externs/polymer-closure-types.html

@@ -144,7 +144,7 @@ gulp.task('closure', ['clean'], () => {
   if (CLOSURE_LINT_ONLY) {
     closurePluginOptions = {
       logger: closureLintLogger
-    }
+    };
   }
 
   const closureStream = closure({

gulpfile.js

@@ -13,36 +13,30 @@
 <link rel="import" href="../mixins/properties-mixin.html">
 
 <script>
-(function() {
+  (function () {
 
-  'use strict';
+    'use strict';
 
-  /**
-   * Base class that provides a simple starting point for creating an element
-   * that declares properties via the `properties` static getter that are
-   * observed. Changes are reported via the `_propertiesChanged` method.
-   * This element provides no specific support for rendering. Users are expected
-   * to create a shadowRoot and put content into it and update it in whatever
-   * way makes sense for the use case.
-   *
-   * @customElement
-   * @polymer
-   * @memberof Polymer
-   * @constructor
-   * @implements {Polymer_PropertiesMixin}
-   * @extends HTMLElement
-   * @appliesMixin Polymer.PropertiesMixin
-   * @summary Base class that provides a simple starting point for creating an
-   * element that declares properties via the `properties` static getter that
-   * are observed
-   */
-   const PropertiesElement = Polymer.PropertiesMixin(HTMLElement);
-  /**
-   * @constructor
-   * @implements {Polymer_PropertiesMixin}
-   * @extends {HTMLElement}
-   */
-  Polymer.PropertiesElement = PropertiesElement;
-
-})();
-</script>
+    /**
+     * Base class that provides a simple starting point for creating an element
+     * that declares properties via the `properties` static getter that are
+     * observed. Changes are reported via the `_propertiesChanged` method.
+     * This element provides no specific support for rendering. Users are expected
+     * to create a shadowRoot and put content into it and update it in whatever
+     * way makes sense for the use case.
+     *
+     * @customElement
+     * @polymer
+     * @memberof Polymer
+     * @constructor
+     * @implements {Polymer_PropertiesMixin}
+     * @extends HTMLElement
+     * @appliesMixin Polymer.PropertiesMixin
+     * @summary Base class that provides a simple starting point for creating an
+     * element that declares properties via the `properties` static getter that
+     * are observed
+     */
+    const PropertiesElement = Polymer.PropertiesMixin(HTMLElement);
+    Polymer.PropertiesElement = PropertiesElement;
+  })();
+</script>