spread-err-sngl-err-itr-step.js (1623B)
1 // This file was procedurally generated from the following sources: 2 // - src/spread/sngl-err-itr-step.case 3 // - src/spread/error/member-expr.template 4 /*--- 5 description: Spread operator applied to the only argument when IteratorStep fails (`new` operator) 6 esid: sec-new-operator-runtime-semantics-evaluation 7 features: [Symbol.iterator] 8 flags: [generated] 9 info: | 10 MemberExpression : new MemberExpression Arguments 11 12 1. Return EvaluateNew(MemberExpression, Arguments). 13 14 12.3.3.1.1 Runtime Semantics: EvaluateNew 15 16 6. If arguments is empty, let argList be an empty List. 17 7. Else, 18 a. Let argList be ArgumentListEvaluation of arguments. 19 [...] 20 21 12.3.6.1 Runtime Semantics: ArgumentListEvaluation 22 23 ArgumentList : ... AssignmentExpression 24 25 1. Let list be an empty List. 26 2. Let spreadRef be the result of evaluating AssignmentExpression. 27 3. Let spreadObj be GetValue(spreadRef). 28 4. Let iterator be GetIterator(spreadObj). 29 5. ReturnIfAbrupt(iterator). 30 6. Repeat 31 a. Let next be IteratorStep(iterator). 32 b. ReturnIfAbrupt(next). 33 34 7.4.5 IteratorStep ( iterator ) 35 36 1. Let result be IteratorNext(iterator). 37 2. ReturnIfAbrupt(result). 38 39 7.4.2 IteratorNext ( iterator, value ) 40 41 1. If value was not passed, then 42 a. Let result be Invoke(iterator, "next", « »). 43 [...] 44 3. ReturnIfAbrupt(result). 45 ---*/ 46 var iter = {}; 47 iter[Symbol.iterator] = function() { 48 return { 49 next: function() { 50 throw new Test262Error(); 51 } 52 }; 53 }; 54 55 assert.throws(Test262Error, function() { 56 new function() {}(...iter); 57 }); 58 59 reportCompare(0, 0);