Bump to v4.13.0.

isNative.js

@@ -1,31 +1,15 @@
-define(['./isFunction', './_isHostObject', './isObject', './_toSource'], function(isFunction, isHostObject, isObject, toSource) {
+define(['./_baseIsNative', './_isMaskable'], function(baseIsNative, isMaskable) {
 
   /**
-   * Used to match `RegExp`
-   * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
-   */
-  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
-
-  /** Used to detect host constructors (Safari). */
-  var reIsHostCtor = /^\[object .+?Constructor\]$/;
-
-  /** Used for built-in method references. */
-  var objectProto = Object.prototype;
-
-  /** Used to resolve the decompiled source of functions. */
-  var funcToString = Function.prototype.toString;
-
-  /** Used to check objects for own properties. */
-  var hasOwnProperty = objectProto.hasOwnProperty;
-
-  /** Used to detect if a method is native. */
-  var reIsNative = RegExp('^' +
-    funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
-    .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
-  );
-
-  /**
-   * Checks if `value` is a native function.
+   * Checks if `value` is a pristine native function.
+   *
+   * **Note:** This method can't reliably detect native functions in the
+   * presence of the `core-js` package because `core-js` circumvents this kind
+   * of detection. Despite multiple requests, the `core-js` maintainer has made
+   * it clear: any attempt to fix the detection will be obstructed. As a result,
+   * we're left with little choice but to throw an error. Unfortunately, this
+   * also affects packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
+   * which rely on `core-js`.
    *
    * @static
    * @memberOf _
@@ -43,11 +27,10 @@ define(['./isFunction', './_isHostObject', './isObject', './_toSource'], functio
    * // => false
    */
   function isNative(value) {
-    if (!isObject(value)) {
-      return false;
+    if (isMaskable(value)) {
+      throw new Error('This method is not supported with `core-js`. Try https://github.com/es-shims.');
     }
-    var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
-    return pattern.test(toSource(value));
+    return baseIsNative(value);
   }
 
   return isNative;