This site describes solve-engine as it is on main: 2.43.0, which npm does not have yet. npm installs 2.40.0, so a page may show an answer that version does not give yet.
mapErr
function mapErr<T, E, F>(r, fn): Result<T, F>;Defined in: packages/engine/src/errors/Result.ts:61
Transform the error; a success passes through untouched.
Type Parameters
Section titled “Type Parameters”| Type Parameter |
|---|
T |
E |
F |
Parameters
Section titled “Parameters”| Parameter | Type |
|---|---|
r | Result<T, E> |
fn | (error) => F |
Returns
Section titled “Returns”Result<T, F>