mirror of https://github.com/tc39/test262.git
70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding-for-await/obj-ptrn-id-init-unresolvable.case
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// - src/dstr-binding-for-await/error/for-await-of-async-func-let.template
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/*---
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description: Destructuring initializer is an unresolvable reference (for-await-of statement)
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esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
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features: [destructuring-binding, async-iteration]
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flags: [generated, async]
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info: |
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IterationStatement :
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for await ( ForDeclaration of AssignmentExpression ) Statement
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[...]
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2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
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lexicalBinding, labelSet, async).
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13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
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[...]
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4. Let destructuring be IsDestructuring of lhs.
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[...]
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6. Repeat
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[...]
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j. If destructuring is false, then
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[...]
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k. Else
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i. If lhsKind is assignment, then
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[...]
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ii. Else if lhsKind is varBinding, then
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[...]
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iii. Else,
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1. Assert: lhsKind is lexicalBinding.
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2. Assert: lhs is a ForDeclaration.
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3. Let status be the result of performing BindingInitialization
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for lhs passing nextValue and iterationEnv as arguments.
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[...]
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13.3.3.7 Runtime Semantics: KeyedBindingInitialization
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SingleNameBinding : BindingIdentifier Initializer_opt
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[...]
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5. If Initializer is present and v is undefined, then
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a. Let defaultValue be the result of evaluating Initializer.
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b. Set v to ? GetValue(defaultValue).
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6.2.4.1 GetValue ( V )
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1. ReturnIfAbrupt(V).
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2. If Type(V) is not Reference, return V.
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3. Let base be GetBase(V).
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4. If IsUnresolvableReference(V), throw a ReferenceError exception.
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---*/
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async function fn() {
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for await (let { x = unresolvableReference } of [{}]) {
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return;
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}
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}
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fn()
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.then(_ => {
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throw new Test262Error("Expected async function to reject, but resolved.");
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}, ({ constructor }) => {
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assert.sameValue(constructor, ReferenceError);
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})
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.then($DONE, $DONE);
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