go-like error handlers via higher order functions

gerr.ts

function safe<P extends ReadonlyArray<unknown>, R>(
  func: (...params: P) => R
): (...params: P) => [R, null] | [null, unknown] {
  return (...params: P) => {
    try {
      return [func(...params), null];
    } catch (e) {
      return [null, e];
    }
  };
}

function safep<P extends ReadonlyArray<unknown>, R>(
  func: (...params: P) => R
): (...params: P) => Promise<[Awaited<R>, null] | [null, unknown]> {
  return async (...params: P) => {
    try {
      return [await func(...params), null];
    } catch (e) {
      return [null, e];
    }
  };
}