dflt-obj-ptrn-rest-val-obj.js (1895B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-rest-val-obj.case 3 // - src/dstr-binding/default/func-decl-dflt.template 4 /*--- 5 description: Rest object contains just unextracted data (function declaration (default parameter)) 6 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject 7 features: [object-rest, destructuring-binding, default-parameters] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 FunctionDeclaration : 12 function BindingIdentifier ( FormalParameters ) { FunctionBody } 13 14 [...] 15 3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody, 16 scope, strict). 17 [...] 18 19 9.2.1 [[Call]] ( thisArgument, argumentsList) 20 21 [...] 22 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). 23 [...] 24 25 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 26 27 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). 28 [...] 29 30 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) 31 32 [...] 33 23. Let iteratorRecord be Record {[[iterator]]: 34 CreateListIterator(argumentsList), [[done]]: false}. 35 24. If hasDuplicates is true, then 36 [...] 37 25. Else, 38 b. Let formalStatus be IteratorBindingInitialization for formals with 39 iteratorRecord and env as arguments. 40 [...] 41 ---*/ 42 43 var callCount = 0; 44 function f({a, b, ...rest} = {x: 1, y: 2, a: 5, b: 3}) { 45 assert.sameValue(rest.a, undefined); 46 assert.sameValue(rest.b, undefined); 47 48 verifyProperty(rest, "x", { 49 enumerable: true, 50 writable: true, 51 configurable: true, 52 value: 1 53 }); 54 55 verifyProperty(rest, "y", { 56 enumerable: true, 57 writable: true, 58 configurable: true, 59 value: 2 60 }); 61 callCount = callCount + 1; 62 }; 63 f(); 64 assert.sameValue(callCount, 1, 'function invoked exactly once'); 65 66 reportCompare(0, 0);