nl_tokens: Is value an * AsyncFunction *
pl_tokens: function isAsyncFunction ( value ) { if ( ! value ) return false ; const afcText = value . toString ( ) . toLocaleLowerCase ( ) . replace ( / \n / g , '' ) . replace ( / / g , '' ) ; return _testConstructor ( 'AsyncFunction' , value ) || ( ( _testConstructor ( 'Function' , <mask> ) && ( afcText . slice ( afcText . indexOf ( '{' ) ) . indexOf ( 'returnnewpromise(function($return,$error)' ) === 1 ) ) ) ; //fast-async monkey-support
   }