Function animateBefore

test/angular/1.2/angular-animate.js:1523–1529

(animationEvent, element, className, calculationDecorator)

      }

      function animateBefore(animationEvent, element, className, calculationDecorator) {
        if(animateSetup(animationEvent, element, className, calculationDecorator)) {
          return function(cancelled) {
            cancelled && animateClose(element, className);
          };
        }
      }

      function animateAfter(animationEvent, element, className, afterAnimationComplete) {
        if(element.data(NG_ANIMATE_CSS_DATA_KEY)) {