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			51 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			51 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
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// - src/dstr-binding/error/async-gen-method-dflt.template
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/*---
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description: Destructuring initializer is an unresolvable reference (async generator method (default parameter))
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esid: sec-asyncgenerator-definitions-propertydefinitionevaluation
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features: [async-iteration]
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flags: [generated]
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info: |
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    AsyncGeneratorMethod :
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        async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
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            { AsyncGeneratorBody }
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    1. Let propKey be the result of evaluating PropertyName.
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    2. ReturnIfAbrupt(propKey).
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    3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
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       Otherwise let strict be false.
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    4. Let scope be the running execution context's LexicalEnvironment.
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    5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
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       AsyncGeneratorBody, scope, strict).
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    [...]
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    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
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    SingleNameBinding : BindingIdentifier Initializeropt
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    [...]
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    6. If Initializer is present and v is undefined, then
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       a. Let defaultValue be the result of evaluating Initializer.
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       b. Let v be GetValue(defaultValue).
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       c. ReturnIfAbrupt(v).
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    6.2.3.1 GetValue (V)
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    1. ReturnIfAbrupt(V).
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    2. If Type(V) is not Reference, return V.
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    3. Let base be GetBase(V).
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    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
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---*/
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var obj = {
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  async *method({ x = unresolvableReference } = {}) {
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  }
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};
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assert.throws(ReferenceError, function() {
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  obj.method();
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});
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