@monstermann/fn/dist/array/lastIndexOfOr.js

A utility library for TypeScript.

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

//#region src/array/lastIndexOfOr.ts
/**
* `lastIndexOfOr(target, value, or)`
*
* Returns the index of the last occurrence of `value` in `target`. If `value` is not found, returns `or`.
*
* ```ts
* lastIndexOfOr([1, 2, 3, 2], 2, -1); // 3
* lastIndexOfOr([1, 2, 3], 4, -1); // -1
* ```
*
* ```ts
* pipe([1, 2, 3, 2], lastIndexOfOr(2, -1)); // 3
* pipe([1, 2, 3], lastIndexOfOr(4, -1)); // -1
* ```
*/
const lastIndexOfOr = dfdlT((target, value, or) => {
	const idx = target.lastIndexOf(value);
	return idx < 0 ? or : idx;
}, 3);

//#endregion
export { lastIndexOfOr };