async-gen-dstr-let-ary-ptrn-rest-id-iter-close.js (1674B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-ptrn-rest-id-iter-close.case 4 // - src/dstr-binding-for-await/iter-close/for-await-of-async-gen-let.template 5 /*--- 6 description: The iterator is properly consumed by the destructuring pattern (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [generators, 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 const iter = (function* () { 40 yield; 41 yield; 42 })(); 43 44 45 async function* fn() { 46 for await (let [...x] of [iter]) { 47 return; 48 } 49 } 50 51 fn() 52 .next() 53 .then(() => { 54 assert.sameValue(iter.next().done, true, 'iteration occurred as expected'); 55 }) 56 .then($DONE, $DONE);