async-func-dstr-var-obj-ptrn-prop-id-init.js (1782B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/obj-ptrn-prop-id-init.case 4 // - src/dstr-binding-for-await/default/for-await-of-async-func-var.template 5 /*--- 6 description: Binding as specified via property name, identifier, and initializer (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 ( var ForBinding of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 16 varBinding, 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 1. Assert: lhs is a ForBinding. 32 2. Let status be the result of performing BindingInitialization 33 for lhs passing nextValue and undefined as the arguments. 34 [...] 35 36 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 37 38 SingleNameBinding : BindingIdentifier Initializer_opt 39 40 [...] 41 7. Return InitializeReferencedBinding(lhs, v). 42 ---*/ 43 44 var iterCount = 0; 45 46 async function fn() { 47 for await (var { x: y = 33 } of [{ }]) { 48 assert.sameValue(y, 33); 49 assert.throws(ReferenceError, function() { 50 x; 51 }); 52 53 iterCount += 1; 54 } 55 } 56 57 fn() 58 .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) 59 .then($DONE, $DONE);