A script for generating plural rule files to use with i18next-icu. Based on https://github.com/formatjs/formatjs/blob/master/packages/intl-pluralrules/scripts/cldr.ts

extract-plural-rules.js

const { writeFileSync } = require("fs");
const { resolve } = require("path");

const serialize = require("serialize-javascript");
const plural = require("make-plural");

const languages = [
  "de",
  "en",
  "es",
  "fr",
  "it",
  "ja",
  "ko",
  "pl",
  "ru",
  "th",
  "zh",
];
languages.forEach(lang => {
  const data = {
    locale: lang,
    pluralRuleFunction: plural[lang],
  };
  writeFileSync(
    resolve(__dirname, `../static/locale-data/${lang}.js`),
    `/* @generated */
/* eslint-disable */
export default ${serialize(data, { space: 2 })};`
  );
});