obj-ptrn-prop-ary-trailing-comma.js (1638B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-ary-trailing-comma.case 3 // - src/dstr-binding/default/arrow-function.template 4 /*--- 5 description: Trailing comma is allowed following BindingPropertyList (arrow function expression) 6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation 7 features: [destructuring-binding] 8 flags: [generated] 9 info: | 10 ArrowFunction : ArrowParameters => ConciseBody 11 12 [...] 13 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict). 14 [...] 15 16 9.2.1 [[Call]] ( thisArgument, argumentsList) 17 18 [...] 19 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 20 [...] 21 22 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 23 24 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 25 [...] 26 27 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 28 29 [...] 30 23. Let iteratorRecord be Record {[[iterator]]: 31 CreateListIterator(argumentsList), [[done]]: false}. 32 24. If hasDuplicates is true, then 33 [...] 34 25. Else, 35 b. Let formalStatus be IteratorBindingInitialization for formals with 36 iteratorRecord and env as arguments. 37 [...] 38 39 13.3.3 Destructuring Binding Patterns 40 41 ObjectBindingPattern[Yield] : 42 { } 43 { BindingPropertyList[?Yield] } 44 { BindingPropertyList[?Yield] , } 45 ---*/ 46 47 var callCount = 0; 48 var f; 49 f = ({ x: [y], }) => { 50 assert.sameValue(y,45); 51 callCount = callCount + 1; 52 }; 53 54 f({ x: [45] }); 55 assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); 56 57 reportCompare(0, 0);