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define(['./_coreJsData'], function(coreJsData) {
  /** Used to detect methods masquerading as native. */  var maskSrcKey = (function() {    var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');    return uid ? ('Symbol(src)_1.' + uid) : '';  }());
  /**   * Checks if `func` has its source masked.   *   * @private   * @param {Function} func The function to check.   * @returns {boolean} Returns `true` if `func` is masked, else `false`.   */  function isMasked(func) {    return !!maskSrcKey && (maskSrcKey in func);  }
  return isMasked;});