nl_tokens: Returns the effective argument type for the provided argument to a decorator .
pl_tokens: function getEffectiveDecoratorArgumentType ( node , argIndex ) { if ( argIndex === 0 ) { return getEffectiveDecoratorFirstArgumentType ( node . parent ) ; } else if ( argIndex === 1 ) { return getEffectiveDecoratorSecondArgumentType ( <mask> . parent ) ; } else if ( argIndex === 2 ) { return getEffectiveDecoratorThirdArgumentType ( node . parent ) ; } ts . Debug . fail ( "Decorators should not have a fourth synthetic argument." ) ; return unknownType ; }