2.1.4 [ECMA-262/9:2018] Section 9.2.7 AsyncGeneratorFunctionCreate ( kind, ParameterList, Body, Scope, Strict )

V0212: Async Generators are not supported

The specification states:

 9.2.7 AsyncGeneratorFunctionCreate ( kind, ParameterList, Body, Scope, Strict )
  
     The abstract operation AsyncGeneratorFunctionCreate requires the arguments: kind 
     which is one of (Normal, Method), a parameter list Parse Node specified by 
     ParameterList, a body Parse Node specified by Body, a Lexical Environment specified 
     by Scope, and a Boolean flag Strict.
  
     AsyncGeneratorFunctionCreate performs the following steps:
  
         1. Let functionPrototype be the intrinsic object %AsyncGenerator%.
         2. Let F be ! FunctionAllocate(functionPrototype, Strict, "generator").
         3. Return ! FunctionInitialize(F, kind, ParameterList, Body, Scope).

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Async Generators are not supported.