meth-dflt-obj-ptrn-prop-obj-value-undef.js (1869B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case 3 // - src/dstr-binding/error/meth-dflt.template 4 /*--- 5 description: Object binding pattern with "nested" object binding pattern taking the `null` value (method (default parameter)) 6 esid: sec-runtime-semantics-definemethod 7 features: [destructuring-binding, default-parameters] 8 flags: [generated] 9 info: | 10 MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } 11 12 [...] 13 6. Let closure be FunctionCreate(kind, StrictFormalParameters, 14 FunctionBody, scope, strict). If functionPrototype was passed as a 15 parameter then pass its value as the functionPrototype optional argument 16 of FunctionCreate. 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 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 43 44 [...] 45 3. If Initializer is present and v is undefined, then 46 [...] 47 4. Return the result of performing BindingInitialization for BindingPattern 48 passing v and environment as arguments. 49 ---*/ 50 51 var obj = { 52 method({ w: { x, y, z } = undefined } = { }) {} 53 }; 54 55 assert.throws(TypeError, function() { 56 obj.method(); 57 }); 58 59 reportCompare(0, 0);