// |reftest| error:SyntaxError // This file was procedurally generated from the following sources: // - src/dstr-binding-for-await/ary-ptrn-rest-not-final-ary.case // - src/dstr-binding-for-await/default/for-await-of-async-func-let-async.template /*--- description: Rest element (array binding pattern) may not be followed by any element (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 ( ForDeclaration of AssignmentExpression ) Statement [...] 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, lexicalBinding, 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 [...] iii. Else, 1. Assert: lhsKind is lexicalBinding. 2. Assert: lhs is a ForDeclaration. 3. Let status be the result of performing BindingInitialization for lhs passing nextValue and iterationEnv as 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; var asyncIter = (async function*() { yield* [[1, 2, 3]]; })(); async function fn() { for await (let [...[x], y] of asyncIter) { iterCount += 1; } } fn() .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) .then($DONE, $DONE);