[fix] InteractionManager improvements

packages/react-native-web/src/exports/InteractionManager/index.js

@@ -9,6 +9,7 @@
  */
 
 import invariant from 'fbjs/lib/invariant';
+import requestIdleCallback, { cancelIdleCallback } from '../../modules/requestIdleCallback';
 
 const InteractionManager = {
   Events: {
@@ -20,16 +21,21 @@ const InteractionManager = {
    * Schedule a function to run after all interactions have completed.
    */
   runAfterInteractions(task: ?Function): { then: Function, done: Function, cancel: Function } {
-    console.warn('InteractionManager is not supported on web');
+    let handle;
+
     const promise = new Promise(resolve => {
-      if (task) {
-        resolve(task());
-      }
+      handle = requestIdleCallback(() => {
+        if (task) {
+          resolve(task());
+        }
+      });
     });
     return {
       then: promise.then.bind(promise),
-      done: () => {},
-      cancel: () => {}
+      done: promise.then.bind(promise),
+      cancel: () => {
+        cancelIdleCallback(handle);
+      }
     };
   },
 

packages/react-native-web/src/modules/requestIdleCallback/index.js

@@ -9,7 +9,7 @@
 
 import { canUseDOM } from 'fbjs/lib/ExecutionEnvironment';
 
-const _requestIdleCallback = function(cb: Function, options: Object) {
+const _requestIdleCallback = function(cb: Function, options?: Object) {
   return setTimeout(() => {
     const start = Date.now();
     cb({