Function setIntervalFn

test/angular/1.7/angular.js:14061–14065

(tick, delay, deferred)

       function($$intervalFactory,   $window) {
    var intervals = {};
    var setIntervalFn = function(tick, delay, deferred) {
      var id = $window.setInterval(tick, delay);
      intervals[id] = deferred;
      return id;
    };
    var clearIntervalFn = function(id) {
      $window.clearInterval(id);
      delete intervals[id];