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

A utility library for TypeScript.

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

//#region src/string/parseFloatOrElse.ts
/**
* `parseFloatOrElse(target, orElse)`
*
* Parses `target` string and returns a floating point number, or the result of calling `orElse` function with `target` if parsing fails.
*
* ```ts
* parseFloatOrElse("3.14", () => 0); // 3.14
* parseFloatOrElse("abc", (str) => str.length); // 3
* ```
*
* ```ts
* pipe(
*     "3.14",
*     parseFloatOrElse(() => 0),
* ); // 3.14
*
* pipe(
*     "abc",
*     parseFloatOrElse((str) => str.length),
* ); // 3
* ```
*/
const parseFloatOrElse = dfdlT((target, orElse) => {
	const value = Number.parseFloat(target);
	return Number.isFinite(value) ? value : orElse(target);
}, 2);

//#endregion
export { parseFloatOrElse };