rosaenlg-n2words/lib/i18n/NL.mjs

Convert numbers to words, in multiple languages

// Copyright Wael TELLAT
// SPDX-License-Identifier: MIT
import N2WordsBase from '../classes/N2WordsBase.mjs';

export default function (options) {
  N2WordsBase.call(this);

  this.negative_word = 'min';
  this.separator_word = 'komma';
  this.ZERO = 'nul';

  const defaultOptions = {
    includeOptionalAnd: false,
    noHundredPairs: false,
  };

  const localOptions = Object.assign({}, defaultOptions, options);

  this.cards = [
    { '1000000000000000000000000000': 'quadriljard' },
    { '1000000000000000000000000': 'quadriljoen' },
    { '1000000000000000000000': 'triljard' },
    { 1000000000000000000: 'triljoen' },
    { 1000000000000000: 'biljard' },
    { 1000000000000: 'biljoen' },
    { 1000000000: 'miljard' },
    { 1000000: 'miljoen' },
    { 1000: 'duizend' },
    { 100: 'honderd' },
    { 90: 'negentig' },
    { 80: 'tachtig' },
    { 70: 'zeventig' },
    { 60: 'zestig' },
    { 50: 'vijftig' },
    { 40: 'veertig' },
    { 30: 'dertig' },
    { 20: 'twintig' },
    { 19: 'negentien' },
    { 18: 'achtien' },
    { 17: 'zeventien' },
    { 16: 'zestien' },
    { 15: 'vijftien' },
    { 14: 'veertien' },
    { 13: 'dertien' },
    { 12: 'twaalf' },
    { 11: 'elf' },
    { 10: 'tien' },
    { 9: 'negen' },
    { 8: 'acht' },
    { 7: 'zeven' },
    { 6: 'zes' },
    { 5: 'vijf' },
    { 4: 'vier' },
    { 3: 'drie' },
    { 2: 'twee' },
    { 1: 'een' },
    { 0: 'nul' },
  ];

  this.merge = (curr, next) => {
    let ctext = Object.keys(curr)[0];
    const cnum = parseInt(Object.values(curr)[0]);
    let ntext = Object.keys(next)[0];
    const nnum = parseInt(Object.values(next)[0]);
    if (cnum == 1) {
      if (nnum < 1000000) {
        return { [ntext]: nnum };
      }
      ctext = 'een';
    }

    let val = 0;
    if (nnum > cnum) {
      if (nnum >= 1000000) {
        ctext += ' ';
      } else if (nnum > 100) {
        ntext += ' ';
      }
      val = cnum * nnum;
    } else {
      if (nnum < 10 && cnum > 10 && cnum < 100) {
        const temp = ntext;
        ntext = ctext;
        const andtxt = temp.endsWith('e') ? 'ën' : 'en';
        ctext = `${temp}${andtxt}`;
      } else if (nnum < 13 && cnum < 1000 && localOptions.includeOptionalAnd) {
        ctext = `${ctext}en`;
      } else if (nnum < 13 && cnum >= 1000 && localOptions.includeOptionalAnd) {
        ntext = ` en ${ntext}`;
      } else if (cnum >= 1000000) {
        ctext += ' ';
      } else {
        if (cnum === 1000) {
          ctext += ' ';
        }
      }
      val = cnum + nnum;
    }
    return { [`${ctext}${ntext}`]: val };
  };

  const old_toCardinal = this.toCardinal;
  this.toCardinal = (value) => {
    if (value >= 1100 && value < 10000 && !localOptions.noHundredPairs) {
      const high = Math.floor(value / 100);
      const low = value % 100;
      if (high % 10 !== 0) {
        return (
          old_toCardinal(high) +
          'honderd' +
          (low ? (localOptions.includeOptionalAnd ? ' en ' : ' ') + old_toCardinal(low) : '')
        );
      }
    }
    return old_toCardinal(value);
  };
}