async-func-dstr-const-ary-ptrn-elem-ary-val-null.js (2179B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-ptrn-elem-ary-val-null.case 4 // - src/dstr-binding-for-await/error/for-await-of-async-func-const.template 5 /*--- 6 description: Nested array destructuring with a null value (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [destructuring-binding, async-iteration] 9 flags: [generated, async] 10 info: | 11 IterationStatement : 12 for await ( ForDeclaration of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 16 lexicalBinding, labelSet, async). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. Let destructuring be IsDestructuring of lhs. 22 [...] 23 6. Repeat 24 [...] 25 j. If destructuring is false, then 26 [...] 27 k. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 [...] 32 iii. Else, 33 1. Assert: lhsKind is lexicalBinding. 34 2. Assert: lhs is a ForDeclaration. 35 3. Let status be the result of performing BindingInitialization 36 for lhs passing nextValue and iterationEnv as arguments. 37 [...] 38 39 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 40 41 BindingElement : BindingPattern Initializer_opt 42 43 1. If iteratorRecord.[[done]] is false, then 44 [...] 45 e. Else 46 i. Let v be IteratorValue(next). 47 [...] 48 4. Return the result of performing BindingInitialization of BindingPattern 49 with v and environment as the arguments. 50 51 13.3.3.5 Runtime Semantics: BindingInitialization 52 53 BindingPattern : ArrayBindingPattern 54 55 1. Let iterator be ? GetIterator(value). 56 ---*/ 57 58 async function fn() { 59 for await (const [[x]] of [[null]]) { 60 return; 61 } 62 } 63 64 fn() 65 .then(_ => { 66 throw new Test262Error("Expected async function to reject, but resolved."); 67 }, ({ constructor }) => { 68 assert.sameValue(constructor, TypeError); 69 70 }) 71 .then($DONE, $DONE);