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			60 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			60 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // This file was procedurally generated from the following sources:
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| // - src/dstr-binding/ary-ptrn-rest-init-obj.case
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| // - src/dstr-binding/default/func-expr-dflt.template
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| /*---
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| description: Rest element (nested object pattern) does not support initializer (function expression (default parameter))
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| esid: sec-function-definitions-runtime-semantics-evaluation
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| features: [destructuring-binding, default-parameters]
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| flags: [generated]
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| negative:
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|   phase: parse
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|   type: SyntaxError
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| info: |
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|     FunctionExpression : function ( FormalParameters ) { FunctionBody }
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| 
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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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| 
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|     9.2.1 [[Call]] ( thisArgument, argumentsList)
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| 
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|     [...]
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|     7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
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|     [...]
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| 
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|     9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
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| 
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|     1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
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|     [...]
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| 
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|     9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
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| 
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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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| 
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|     13.3.3 Destructuring Binding Patterns
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|     ArrayBindingPattern[Yield] :
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|         [ Elisionopt BindingRestElement[?Yield]opt ]
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|         [ BindingElementList[?Yield] ]
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|         [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
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| ---*/
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| $DONOTEVALUATE();
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| 
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| var callCount = 0;
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| var f;
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| f = function([...{ x } = []] = []) {
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|   
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|   callCount = callCount + 1;
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| };
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| 
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| f();
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| assert.sameValue(callCount, 1, 'function invoked exactly once');
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