chrome/test/data/third_party/spaceport/js/util/quickPromise.js

   1 define([ 'util/ensureCallback' ], function (ensureCallback) {
   2     function quickPromise() {
   3         var thens = [ ];
   4         var resolved = false;
   5
   6         function resolve() {
   7             if (resolved) {
   8                 throw new Error("Already resolved");
   9             }
  10             resolved = true;
  11
  12             while (thens.length) {
  13                 var fn = thens.pop();
  14                 fn();
  15             }
  16         }
  17
  18         function then(fn) {
  19             fn = ensureCallback(fn);
  20             if (resolved) {
  21                 fn();
  22             } else {
  23                 thens.push(fn);
  24             }
  25         }
  26
  27         return {
  28             resolve: resolve,
  29             then: then
  30         };
  31     }
  32
  33     return quickPromise;
  34 });