// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding-for-await/ary-ptrn-elem-obj-val-undef.case // - src/dstr-binding-for-await/error/for-await-of-async-func-let.template /*--- description: Nested object destructuring with a value of `undefined` (for-await-of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding, async-iteration] flags: [generated, async] 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. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization BindingElement : BindingPattern Initializer_opt 1. If iteratorRecord.[[done]] is false, then [...] e. Else i. Let v be IteratorValue(next). [...] 4. Return the result of performing BindingInitialization of BindingPattern with v and environment as the arguments. 13.3.3.5 Runtime Semantics: BindingInitialization BindingPattern : ObjectBindingPattern 1. Let valid be RequireObjectCoercible(value). 2. ReturnIfAbrupt(valid). ---*/ async function fn() { for await (let [{ x }] of [[]]) { return; } } fn() .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => { assert.sameValue(constructor, TypeError); }) .then($DONE, $DONE);