// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-assignment-for-await/array-rest-nested-array-yield-expr.case // - src/dstr-assignment-for-await/async-generator/async-gen-decl.template /*--- description: When a `yield` token appears within the DestructuringAssignmentTarget of a nested destructuring assignment and within a generator function body, it should behave as a YieldExpression. (for-await-of statement in an async generator declaration) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [generators, destructuring-binding, async-iteration] flags: [generated, async] info: | IterationStatement : for await ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 5. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] ---*/ let x = {}; let iterCount = 0; async function * fn() { for await ([...[x[yield]]] of [[86]]) { iterCount += 1; } } let iter = fn(); iter.next().then(iterationResult => { assert.sameValue(iterationResult.value, undefined); assert.sameValue(iterationResult.done, false); assert.sameValue(x.prop, undefined); iter.next('prop').then(iterationResult => { assert.sameValue(iterationResult.value, undefined); assert.sameValue(iterationResult.done, true); assert.sameValue(x.prop, 86); }).then($DONE, $DONE); });