Function create

extensions/fastdom-promised.js:55–70

* Create a fastdom task wrapped in * a 'cancellable' Promise. * * @param {FastDom} fastdom * @param {String} type - 'measure'|'mutate' * @param {Function} fn * @return {Promise}

(promised, type, fn, ctx)

 * @return {Promise}
 */
function create(promised, type, fn, ctx) {
  var tasks = promised._tasks;
  var fastdom = promised.fastdom;
  var task;

  var promise = new Promise(function(resolve, reject) {
    task = fastdom[type](function() {
      tasks.delete(promise);
      try { resolve(ctx ? fn.call(ctx) : fn()); }
      catch (e) { reject(e); }
    }, ctx);
  });

  tasks.set(promise, task);
  return promise;
}

// Expose to CJS, AMD or global
if ((typeof define)[0] == 'f') define(function() { return exports; });