word-number-word/dist/currencyToWord.js

A TypeScript/JavaScript utility for converting numbers to words and vice versa — including support for decimals, negatives, and currency converting.

import { numberToWord } from "./numberToWord";
const CURRENCY_LABELS = {
    usd: { major: "dollar", minor: "cent" },
    bdt: { major: "taka", minor: "poisha" },
    eur: { major: "euro", minor: "cent" },
    gbp: { major: "pound", minor: "pence" },
};
export function currencyToWord(amount, currency) {
    if (!(currency in CURRENCY_LABELS)) {
        throw new Error(`Unsupported currency type: "${currency}". Supported types: ${Object.keys(CURRENCY_LABELS).join(", ")}`);
    }
    const { major, minor } = CURRENCY_LABELS[currency];
    const isNegative = amount < 0;
    const absAmount = Math.abs(amount);
    const majorValue = Math.floor(absAmount);
    const minorValue = Math.round((absAmount - majorValue) * 100);
    const majorWord = numberToWord(majorValue);
    const minorWord = numberToWord(minorValue);
    const majorUnit = majorValue === 1 ? major : `${major}s`;
    const minorUnit = minorValue === 1 ? minor : `${minor}s`;
    const result = `${isNegative ? "minus " : ""}${majorWord} ${majorUnit} and ${minorWord} ${minorUnit}`;
    return result;
}