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round-price

v1.0.1

Published

Utility functions for applying custom rounding rules to prices, where decimal parts are rounded to either .5 or the next whole number.

Downloads

7

Readme

round-price

🔢 Egyszerű, de szabály-alapú kerekítési segédfüggvények árakhoz.
Támogatja a speciális logikát, ahol .5-re vagy egészre történik a kerekítés az ár tört része alapján.

✨ Funkciók

  • roundPrice(price) – alkalmazza a szabályokat, és visszaadja a kerekített értéket.
  • shouldRound(price) – logikailag eldönti, hogy adott árra szükséges-e kerekítés.

📦 Telepítés

Publikus NPM-ről:

npm install round-price

Lokálisan (ha saját repo vagy fájlrendszerből):

npm install ../round-price

✅ Használat

const { roundPrice, shouldRound } = require('round-price');

const price = 12.3;

if (shouldRound(price)) {
  const rounded = roundPrice(price);
  console.log(`Kerekített ár: ${rounded}`); // 12.5
}

🔍 Kerekítési szabály

  1. Ha az ár egész szám vagy .5-re végződik → nem történik módosítás.
  2. Ha a tört rész 0 < x < 0.5.5-re kerekít.
  3. Ha a tört rész x > 0.5 → felfelé egész számra kerekít.
  4. Negatív számokra a fenti logika tükörképe alkalmazandó.

Példák:

| Bemenet | Eredmény | |-----------|----------| | 12 | 12 | | 12.3 | 12.5 | | 12.99 | 13 | | 12.5 | 12.5 | | -4.2 | -4.5 | | -4.8 | -5 |

🧪 Tesztelés

Ha fejlesztőként használod, a csomaghoz tartozik Jest-alapú tesztelés is:

npm install
npm test

📝 Licenc

MIT © 2025