test262/test/language/rest-parameters/expected-argument-count.js

15 lines
547 B
JavaScript

// Copyright (C) 2014 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 14.1.6
description: >
The ExpectedArgumentCount of a FormalParameterList is the number of
FormalParameters to the left of either the rest parameter or the first
FormalParameter with an Initializer.
---*/
function af(...a) {}
function bf(a, ...b) {}
assert.sameValue(af.length, 0, "The value of `af.length` is `0`");
assert.sameValue(bf.length, 1, "The value of `bf.length` is `1`");