js/src/tests/test262/language/statements/for-await-of/async-func-decl-dstr-array-elem-nested-obj-yield-ident-invalid-strict.js


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// |reftest| error:SyntaxError
'use strict';
// This file was procedurally generated from the following sources:
// - src/dstr-assignment-for-await/array-elem-nested-obj-yield-ident-invalid.case
// - src/dstr-assignment-for-await/error-async-function-syntax/async-func-decl.template
/*---
description: When a `yield` token appears within the Initializer of a nested destructuring assignment outside of a generator function body, it behaves as a IdentifierReference. (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, onlyStrict]
negative:
  phase: parse
  type: SyntaxError
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.
    [...]
---*/
$DONOTEVALUATE();

async function fn() {
  for await ([{ x = yield }] of [[{}]]) {}
}