error.log

TS2344: Type 'T[U]' does not satisfy the constraint '(...args: any) => any'.
  Type 'T[OnlyFunctionPropertyNames<T>]' is not assignable to type '(...args: any) => any'.
    Type 'T[T[keyof T] extends (...args: any) => any ? keyof T : never]' is not assignable to type '(...args: any) => any'.
      Type 'T[keyof T]' is not assignable to type '(...args: any) => any'.
        Type 'T[string] | T[number] | T[symbol]' is not assignable to type '(...args: any) => any'.
          Type 'T[string]' is not assignable to type '(...args: any) => any'.
    16 |   T extends Composer<never>,
    17 |   U extends OnlyFunctionPropertyNames<T> = OnlyFunctionPropertyNames<T>,
  > 18 | > = Filter<Parameters<T[U]>, Middleware<never>>