TypeScript - 无法将 function 的类型设置为过载

Question

I am trying to set the type of a function to be an overload type that is defined as the property of an interface, but am getting Binding element 'text' implicitly has an 'any' type.ts(7031) for the function arguments. The overloads all have the same typing for the args so I'm not sure why it's erroring.

interface Args {
  text: string
}

interface Utils {
  toUpperCase?(args: Args): string
  toUpperCase?(args: Args): any
}

export const toUpperCase: Utils['toUpperCase'] = ({ text }) => text.toUpperCase()

It works fine with either overload individually, so if I remove one of them (doesn't matter which), then the error is gone, eg

interface Utils {
  toUpperCase?(args: Args): string
  // toUpperCase?(args: Args): any
}

Answer 1

Adding an :Args explicit typing to the function parameter seems to eliminate the compiler error.

interface Args {
  text: string
}

interface Utils {
  toUpperCase?(args: Args): string
  toUpperCase?(args: Args): any
}

export const toUpperCase: Utils['toUpperCase'] = ({ text }: Args) => text.toUpperCase()

Looks like the inference isn't or maybe can't be made that the function on the right fulfils the signature of Utils['toUpperCase'] without it.