@monstermann/fn/dist/string/parseIntOrElse.js

A utility library for TypeScript.

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

//#region src/string/parseIntOrElse.ts
/**
* `parseIntOrElse(target, orElse)`
*
* Parses `target` string and returns an integer, or the result of calling `orElse` function with `target` if parsing fails.
*
* ```ts
* parseIntOrElse("42", () => 0); // 42
* parseIntOrElse("abc", (str) => str.length); // 3
* ```
*
* ```ts
* pipe(
*     "42",
*     parseIntOrElse(() => 0),
* ); // 42
*
* pipe(
*     "abc",
*     parseIntOrElse((str) => str.length),
* ); // 3
* ```
*/
const parseIntOrElse = dfdlT((target, orElse) => {
	const value = Number.parseInt(target);
	return Number.isFinite(value) ? value : orElse(target);
}, 2);

//#endregion
export { parseIntOrElse };