rupees-ts/dist/index.js

Convert number to Indian Rupees format, but faster & fully typed.

//#region src/index.ts
const ONES = [
	"",
	"One",
	"Two",
	"Three",
	"Four",
	"Five",
	"Six",
	"Seven",
	"Eight",
	"Nine"
];
const TEENS = [
	"Ten",
	"Eleven",
	"Twelve",
	"Thirteen",
	"Fourteen",
	"Fifteen",
	"Sixteen",
	"Seventeen",
	"Eighteen",
	"Nineteen"
];
const TENS = [
	"",
	"",
	"Twenty",
	"Thirty",
	"Forty",
	"Fifty",
	"Sixty",
	"Seventy",
	"Eighty",
	"Ninety"
];
const CRORE = "Crore";
const LAKH = "Lakh";
const THOUSAND = "Thousand";
const HUNDRED = "Hundred";
function twoDigitsToWords(num) {
	if (num < 10) return ONES[num];
	if (num < 20) return TEENS[num - 10];
	const tens = Math.floor(num / 10);
	const ones = num % 10;
	return TENS[tens] + (ones ? ` ${ONES[ones]}` : "");
}
function numberToWordsIndian(num) {
	if (num === 0) return "Zero";
	const parts = [];
	const crore = Math.floor(num / 1e7);
	num %= 1e7;
	if (crore) parts.push(`${numberToWordsIndian(crore)} ${CRORE}`);
	const lakh = Math.floor(num / 1e5);
	num %= 1e5;
	if (lakh) parts.push(`${numberToWordsIndian(lakh)} ${LAKH}`);
	const thousand = Math.floor(num / 1e3);
	num %= 1e3;
	if (thousand) parts.push(`${numberToWordsIndian(thousand)} ${THOUSAND}`);
	const hundred = Math.floor(num / 100);
	num %= 100;
	if (hundred) parts.push(`${ONES[hundred]} ${HUNDRED}`);
	if (num > 0) {
		if (parts.length > 0) parts.push("and");
		parts.push(twoDigitsToWords(num));
	}
	return parts.join(" ");
}
function convert(input) {
	let rupees = 0;
	let paise = 0;
	let isNegative = false;
	if (typeof input === "number") {
		if (input < 0) {
			isNegative = true;
			input = -input;
		}
		rupees = Math.floor(input);
		const decimalStr = input.toFixed(10).split(".")[1];
		paise = Number.parseInt(decimalStr.padEnd(2, "0").slice(0, 2));
	} else if (typeof input === "string") {
		let formattedInput = input.trim();
		if (formattedInput.startsWith("-")) {
			isNegative = true;
			formattedInput = formattedInput.slice(1).trim();
		}
		if (formattedInput === "") {
			rupees = 0;
			paise = 0;
		} else {
			const parts = formattedInput.split(".");
			if (!/^\d*$/.test(parts[0])) return false;
			rupees = Number.parseInt(parts[0] || "0", 10);
			if (parts[1]) {
				if (!/^\d+$/.test(parts[1])) return false;
				paise = Number.parseInt(parts[1].padEnd(2, "0").slice(0, 2));
			} else paise = 0;
		}
	} else return false;
	if (rupees === 0 && paise === 0) return "Zero Rupees Only";
	let output = isNegative ? "Minus " : "";
	if (rupees === 0) if (paise > 0) output += `${twoDigitsToWords(paise)} Paise`;
	else output += "Zero Rupees Only";
	else {
		output += numberToWordsIndian(rupees);
		if (paise > 0) output += ` Rupees and ${twoDigitsToWords(paise)} Paise`;
		else output += " Rupees Only";
	}
	return output;
}

//#endregion
export { convert };