mirror of https://github.com/tc39/test262.git
60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/function-forms/dflt-params-duplicates.case
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// - src/function-forms/syntax/arrow-function.template
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/*---
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description: It is a Syntax Error if BoundNames of FormalParameters contains any duplicate elements. (arrow function expression)
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esid: sec-arrow-function-definitions-runtime-semantics-evaluation
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features: [default-parameters]
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flags: [generated]
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negative:
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phase: early
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type: SyntaxError
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info: |
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ArrowFunction : ArrowParameters => ConciseBody
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[...]
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4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
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[...]
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9.2.1 [[Call]] ( thisArgument, argumentsList)
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[...]
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7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
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[...]
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9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
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1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
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[...]
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9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
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[...]
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23. Let iteratorRecord be Record {[[iterator]]:
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CreateListIterator(argumentsList), [[done]]: false}.
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24. If hasDuplicates is true, then
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[...]
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25. Else,
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b. Let formalStatus be IteratorBindingInitialization for formals with
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iteratorRecord and env as arguments.
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[...]
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14.1.2 Static Semantics: Early Errors
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StrictFormalParameters : FormalParameters
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- It is a Syntax Error if BoundNames of FormalParameters contains any
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duplicate elements.
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FormalParameters : FormalParameterList
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- It is a Syntax Error if IsSimpleParameterList of FormalParameterList is
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false and BoundNames of FormalParameterList contains any duplicate
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elements.
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---*/
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0, (x = 0, x) => {
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};
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