Strict mode Failing
Expected no error, got SyntaxError: warning: the variable "x" was not declared in anonymous function " 9#"
Features:
- generators
- destructuring-binding
Expected no error, got SyntaxError: warning: the variable "x" was not declared in anonymous function " 9#"
// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-prop-id.case
// - src/dstr-binding/default/gen-func-expr.template
/*---
description: Binding as specified via property name and identifier (generator function expression)
esid: sec-generator-function-definitions-runtime-semantics-evaluation
features: [generators, destructuring-binding]
flags: [generated]
info: |
GeneratorExpression : function * ( FormalParameters ) { GeneratorBody }
[...]
3. Let closure be GeneratorFunctionCreate(Normal, FormalParameters,
GeneratorBody, scope, strict).
[...]
9.2.1 [[Call]] ( thisArgument, argumentsList)
[...]
7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
[...]
9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
[...]
9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
[...]
23. Let iteratorRecord be Record {[[iterator]]:
CreateListIterator(argumentsList), [[done]]: false}.
24. If hasDuplicates is true, then
[...]
25. Else,
b. Let formalStatus be IteratorBindingInitialization for formals with
iteratorRecord and env as arguments.
[...]
13.3.3.7 Runtime Semantics: KeyedBindingInitialization
SingleNameBinding : BindingIdentifier Initializeropt
[...]
8. Return InitializeReferencedBinding(lhs, v).
---*/
var callCount = 0;
var f;
f = function*({ x: y }) {
assert.sameValue(y, 23);
assert.throws(ReferenceError, function() {
x;
});
callCount = callCount + 1;
};
f({ x: 23 }).next();
assert.sameValue(callCount, 1, 'generator function invoked exactly once');