dflt-obj-ptrn-id-init-fn-name-class.js (2140B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-id-init-fn-name-class.case 3 // - src/dstr-binding/default/arrow-function-dflt.template 4 /*--- 5 description: SingleNameBinding assigns `name` to "anonymous" classes (arrow function expression (default parameter)) 6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation 7 features: [destructuring-binding, default-parameters] 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 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 40 41 SingleNameBinding : BindingIdentifier Initializeropt 42 43 [...] 44 6. If Initializer is present and v is undefined, then 45 [...] 46 d. If IsAnonymousFunctionDefinition(Initializer) is true, then 47 i. Let hasNameProperty be HasOwnProperty(v, "name"). 48 ii. ReturnIfAbrupt(hasNameProperty). 49 iii. If hasNameProperty is false, perform SetFunctionName(v, 50 bindingId). 51 ---*/ 52 53 var callCount = 0; 54 var f; 55 f = ({ cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } } = {}) => { 56 assert.sameValue(cls.name, 'cls'); 57 assert.notSameValue(xCls.name, 'xCls'); 58 assert.notSameValue(xCls2.name, 'xCls2'); 59 callCount = callCount + 1; 60 }; 61 62 f(); 63 assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); 64 65 reportCompare(0, 0);