npm install to-words --save

const { ToWords } = require('to-words');

import { ToWords } from 'to-words';

const toWords = new ToWords({
  localeCode: 'en-IN',
  converterOptions: {
    currency: true,
    ignoreDecimal: false,
    ignoreZeroCurrency: false,
  }
});

const toWords = new ToWords();

let words = toWords.convert(123);
// words = One Hundred Twenty Three

words = toWords.convert(123.45);
// words = One Hundred Twenty Three Point Fourty Five

words = toWords.convert(123.045);
// words = One Hundred Twenty Three Point Zero Four Five

const toWords = new ToWords();

let words = toWords.convert(452, { currency: true });
// words = Four Hundred Fifty Two Rupees Only

words = toWords.convert(452.36, { currency: true });
// words = Four Hundred Fifty Two Rupees And Thirty Six Paise Only

const toWords = new ToWords();

let words = toWords.convert(452.36, { currency: true, ignoreDecimal: true });
// words = Four Hundred Fifty Two Rupees Only

const toWords = new ToWords();

let words = toWords.convert(0.572, { currency: true, ignoreZeroCurrency: true });
// words = Five Hundred Seventy Two Paise Only