dflt-ary-ptrn-rest-id-direct.js (1832B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-id-direct.case 3 // - src/dstr-binding/default/arrow-function-dflt.template 4 /*--- 5 description: Lone rest element (direct binding) (arrow function expression (default parameter)) 6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation 7 features: [destructuring-binding, default-parameters] 8 flags: [generated] 9 includes: [compareArray.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 Runtime Semantics: IteratorBindingInitialization 41 42 BindingRestElement : ... BindingIdentifier 43 44 [...] 45 2. Let A be ! ArrayCreate(0). 46 3. Let n be 0. 47 4. Repeat, 48 [...] 49 f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue). 50 g. Set n to n + 1. 51 52 ---*/ 53 54 var callCount = 0; 55 var f; 56 f = ([...x] = [1]) => { 57 assert(Array.isArray(x)); 58 assert.compareArray(x, [1]); 59 callCount = callCount + 1; 60 }; 61 62 f(); 63 assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); 64 65 reportCompare(0, 0);