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Mini Shell
Mini Shell
// 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);
assertThrows(
() => { RegExp.prototype[Symbol.replace].call("xyz", "foo", "a"); },
TypeError,
"Method RegExp.prototype.@@replace called on incompatible receiver xyz");
Zerion Mini Shell 1.0