fixed-data-table-one.com/internal/requestAnimationFramePolyfill.js

A React table component designed to allow presenting thousands of rows of data.

'use strict';

var _emptyFunction = require('./emptyFunction');

var _emptyFunction2 = _interopRequireDefault(_emptyFunction);

var _nativeRequestAnimationFrame = require('./nativeRequestAnimationFrame');

var _nativeRequestAnimationFrame2 = _interopRequireDefault(_nativeRequestAnimationFrame);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Copyright Schrodinger, LLC
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule requestAnimationFramePolyfill
 */

var lastTime = 0;

/**
 * Here is the native and polyfill version of requestAnimationFrame.
 * Please don't use it directly and use requestAnimationFrame module instead.
 */
var requestAnimationFrame = _nativeRequestAnimationFrame2.default || function (callback) {
  var currTime = Date.now();
  var timeDelay = Math.max(0, 16 - (currTime - lastTime));
  lastTime = currTime + timeDelay;
  return global.setTimeout(function () {
    callback(Date.now());
  }, timeDelay);
};

// Works around a rare bug in Safari 6 where the first request is never invoked.
requestAnimationFrame(_emptyFunction2.default);

module.exports = requestAnimationFrame;