nochoices/dist/mod/unzip.js

Full featured implementation of options into typescript.

import { Option } from "./option.js";
/**
 * Type safe function to unzip an option of a tuple of 2 into a tuple of 2 options.
 * @typeParam A - Any type
 * @typeParam B - Any type
 *
 * @param opt - Option to unzip
 * @returns a tuple of 2 options.
 *
 * @example
 * ```ts
 * const opt: Option<[number, string]> = Option.Some([10, 'foo'])
 * const [optA, optB] =unzip(opt)
 * optA.unwrap() === 10 // true
 * optB.unwrap() === 'foo' // true
 * ```
 */
export function unzip(opt) {
    return opt.map(([a, b]) => [Option.Some(a), Option.Some(b)])
        .unwrapOr([Option.None(), Option.None()]);
}