// |reftest| error:SyntaxError // This file was procedurally generated from the following sources: // - src/dstr-binding-for-await/ary-ptrn-rest-init-obj.case // - src/dstr-binding-for-await/default/for-await-of-async-gen-var.template /*--- description: Rest element (nested object pattern) does not support initializer (for-await-of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding, async-iteration] flags: [generated] negative: phase: parse type: SyntaxError info: | IterationStatement : for await ( var ForBinding of AssignmentExpression ) Statement [...] 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, varBinding, labelSet, async). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 4. Let destructuring be IsDestructuring of lhs. [...] 6. Repeat [...] j. If destructuring is false, then [...] k. Else i. If lhsKind is assignment, then [...] ii. Else if lhsKind is varBinding, then 1. Assert: lhs is a ForBinding. 2. Let status be the result of performing BindingInitialization for lhs passing nextValue and undefined as the arguments. [...] 13.3.3 Destructuring Binding Patterns ArrayBindingPattern[Yield] : [ Elisionopt BindingRestElement[?Yield]opt ] [ BindingElementList[?Yield] ] [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ] ---*/ $DONOTEVALUATE(); var iterCount = 0; async function *fn() { for await (var [...{ x } = []] of [[]]) { iterCount += 1; } } fn().next() .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) .then($DONE, $DONE);