interface Fn implements HasSpan, HasDecoratorimport { type Fn } from "https://deno.land/x/deco@1.57.6/deps.ts"; Propertiesparams: Param[]optionalbody: BlockStatementgenerator: booleanasync: booleanoptionaltypeParameters: TsTypeParameterDeclarationoptionalreturnType: TsTypeAnnotation