@monstermann/fn/dist/option/map.js

A utility library for TypeScript.

import { dfdlT } from "@monstermann/dfdl";

//#region src/option/map.ts
/**
* `map(target, map)`
*
* Applies a mapping function to a value if it's not `null` or `undefined`. If the target value is `null` or `undefined`, it returns the target unchanged. Otherwise, it applies the mapping function and returns the result.
*
* ```ts
* map(5, (x) => x * 2); // 10
* map(null, (x) => x * 2); // null
* map(undefined, (x) => x * 2); // undefined
* ```
*
* ```ts
* pipe(
*     5,
*     map((x) => x * 2),
* ); // 10
* pipe(
*     null,
*     map((x) => x * 2),
* ); // null
* ```
*/
const map = dfdlT((target, map$1) => {
	if (target == null) return target;
	return map$1(target);
}, 2);

//#endregion
export { map };