3 ms·

unknown is not equivalent to any as a type constraint: doesn't work. https://www.totaltypescript.com/any-considered-harmful#type-argument-constraints https://w

• deleted 2y ago
  [deleted]
• matt_kantor 2y ago
  The widest possible function type is `(...args: never) => unknown`. This is because parameters are contravariant, and `never` is the bottom type. Using that type works in the author's example[0]. I've got an issue open about TypeScript's provided `ReturnType` type which is somewhat related to this[1]. [0]: https://tsplay.dev/Wy0Ogm https://tsplay.dev/Wy0Ogm [1]: https://github.com/microsoft/TypeScript/issues/55667 https://github.com/microsoft/TypeScript/issues/55667