dflt-obj-ptrn-rest-getter.js (1705B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-rest-getter.case 3 // - src/dstr-binding/default/arrow-function-dflt.template 4 /*--- 5 description: Getter is called when obj is being deconstructed to a rest Object (arrow function expression (default parameter)) 6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation 7 features: [object-rest, destructuring-binding, default-parameters] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 ArrowFunction : ArrowParameters => ConciseBody 12 13 [...] 14 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict). 15 [...] 16 17 9.2.1 [[Call]] ( thisArgument, argumentsList) 18 19 [...] 20 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 21 [...] 22 23 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 24 25 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 26 [...] 27 28 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 29 30 [...] 31 23. Let iteratorRecord be Record {[[iterator]]: 32 CreateListIterator(argumentsList), [[done]]: false}. 33 24. If hasDuplicates is true, then 34 [...] 35 25. Else, 36 b. Let formalStatus be IteratorBindingInitialization for formals with 37 iteratorRecord and env as arguments. 38 [...] 39 ---*/ 40 var count = 0; 41 42 var callCount = 0; 43 var f; 44 f = ({...x} = { get v() { count++; return 2; } }) => { 45 assert.sameValue(count, 1); 46 47 verifyProperty(x, "v", { 48 enumerable: true, 49 writable: true, 50 configurable: true, 51 value: 2 52 }); 53 callCount = callCount + 1; 54 }; 55 56 f(); 57 assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); 58 59 reportCompare(0, 0);