destructuring-array-parameters-function-arguments-length.js (1076B)
1 // Copyright (C) 2020 Rick Waldron. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-destructuring-binding-patterns-static-semantics-hasinitializer 6 description: > 7 Function.length when ArrayBindingPattern in FormalParameterList 8 info: | 9 #sec-function-definitions-static-semantics-expectedargumentcount 10 11 Static Semantics: ExpectedArgumentCount 12 13 FormalParameterList : FormalParameter 14 15 1. If HasInitializer of FormalParameter is true, return 0. 16 2. Return 1. 17 18 #sec-destructuring-binding-patterns-static-semantics-hasinitializer 19 20 Static Semantics: HasInitializer 21 22 BindingElement : BindingPattern 23 24 1. Return false. 25 26 features: [destructuring-binding] 27 ---*/ 28 29 assert.sameValue((([a,b]) => {}).length, 1); 30 assert.sameValue((function([a,b]) {}).length, 1); 31 assert.sameValue((function * ([a,b]) {}).length, 1); 32 assert.sameValue((async ([a,b]) => {}).length, 1); 33 assert.sameValue((async function([a,b]) {}).length, 1); 34 assert.sameValue((async function * ([a,b]) {}).length, 1); 35 36 37 reportCompare(0, 0);