// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-assignment-for-await/array-elem-nested-obj-undefined.case // - src/dstr-assignment-for-await/default/async-func-decl.template /*--- description: When DestructuringAssignmentTarget is an object literal and no value is defined, a TypeError should be thrown. (for-await-of statement in an async function declaration) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [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 }] of [[]]) { iterCount += 1; } } let promise = fn(); promise.then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => { assert.sameValue(iterCount, 0); assert.sameValue(constructor, TypeError); }).then($DONE, $DONE);