// Copyright 2015 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. var pattern = {
[Symbol.replace]: (string, newValue) => string + newValue, toString: () => "c"
}; // Check object coercible fails. assertThrows(() => String.prototype.replace.call(null, pattern, "x"), TypeError); // Override is called. assertEquals("abcdex", "abcde".replace(pattern, "x")); // Non-callable override. pattern[Symbol.replace] = "dumdidum"; assertThrows(() => "abcde".replace(pattern, "x"), TypeError);
// Null override. pattern[Symbol.replace] = null; assertEquals("abXde", "abcde".replace(pattern, "X"));
assertEquals("[Symbol.replace]", RegExp.prototype[Symbol.replace].name);