dflt-obj-ptrn-prop-ary-value-null.js (1716B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-prop-ary-value-null.case 3 // - src/dstr-binding/error/arrow-function-dflt.template 4 /*--- 5 description: Object binding pattern with "nested" array binding pattern taking the `null` value (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 [...] 42 3. If Initializer is present and v is undefined, then 43 [...] 44 4. Return the result of performing BindingInitialization for BindingPattern 45 passing v and environment as arguments. 46 ---*/ 47 48 var f = ({ w: [x, y, z] = [4, 5, 6] } = { w: null }) => {}; 49 50 assert.throws(TypeError, function() { 51 f(); 52 }); 53 54 reportCompare(0, 0);