option-t
Version:
A toolkit of Nullable/Option/Result type implementation in ECMAScript. Their APIs are inspired by Rust's `Option<T>` and `Result<T, E>`.
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TypeScript
import type { TransformFn } from '../../internal/function.js';
import { type Result } from '../core/result.js';
/**
* Maps a `Result<T, E>` to `Result<U, E>` by applying a _transformer_ function
* to an contained `Ok(T)` value, leaving an `Err(E)` value untouched.
*
* This function can be used to compose the results of two functions.
*/
export declare function mapForResult<T, U, E>(input: Result<T, E>, transformer: TransformFn<T, U>): Result<U, E>;