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			55 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			55 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
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// - src/dstr-binding/error/func-expr.template
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/*---
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description: Object binding pattern with "nested" object binding pattern taking the `null` value (function expression)
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esid: sec-function-definitions-runtime-semantics-evaluation
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es6id: 14.1.20
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features: [destructuring-binding]
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flags: [generated]
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info: |
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    FunctionExpression : function ( FormalParameters ) { FunctionBody }
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        [...]
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        3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody,
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           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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    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
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    [...]
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    3. If Initializer is present and v is undefined, then
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       [...]
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    4. Return the result of performing BindingInitialization for BindingPattern
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       passing v and environment as arguments.
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---*/
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var f = function({ w: { x, y, z } = { x: 4, y: 5, z: 6 } }) {};
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assert.throws(TypeError, function() {
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  f({ w: null });
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});
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