How to use cldr-core - 10 common examples

const fs = require('fs');
const path = require('path');
const glob = require('glob');

const i18n = require('../lib/i18n/i18n.js');
const lookupClosestLocale = require('lookup-closest-locale');

const cldrAliasData = require('cldr-core/supplemental/aliases.json');
const cldrAliases = cldrAliasData.supplemental.metadata.alias.languageAlias;

const cldrParentsData = require('cldr-core/supplemental/parentLocales.json');
const cldrParentLocales = cldrParentsData.supplemental.parentLocales.parentLocale;


// const
// Object.entries(cldrAliases).forEach(([alias, entry]) => { if (locales[entry._replacement]) console.log(alias, entry) })

const lhLocales = glob
  .sync('./lighthouse-core/lib/i18n/locales/*.json')
  .filter(f => !f.includes('.ctc.json'))
  .map(filename => path.parse(filename).name);

//
// 1. Validate the locales we store are canonical and not an alias
//

const fs = require('fs');
const path = require('path');
const glob = require('glob');

const i18n = require('../lib/i18n/i18n.js');
const lookupClosestLocale = require('lookup-closest-locale');

const cldrAliasData = require('cldr-core/supplemental/aliases.json');
const cldrAliases = cldrAliasData.supplemental.metadata.alias.languageAlias;

const cldrParentsData = require('cldr-core/supplemental/parentLocales.json');
const cldrParentLocales = cldrParentsData.supplemental.parentLocales.parentLocale;


// const
// Object.entries(cldrAliases).forEach(([alias, entry]) => { if (locales[entry._replacement]) console.log(alias, entry) })

const lhLocales = glob
  .sync('./lighthouse-core/lib/i18n/locales/*.json')
  .filter(f => !f.includes('.ctc.json'))
  .map(filename => path.parse(filename).name);

//
// 1. Validate the locales we store are canonical and not an alias
//
const aliasExceptions = ['zh-HK', 'zh-TW']; // TC pipeline still uses these codes rather than the CLDR's preferred `zh-Hant-HK`, `zh-Hant-TW`

for (const localeCode of lhLocales) {

import * as glob from "glob"
import * as path from "path"

let CLDR_DATES_DIR = path.dirname(require.resolve("cldr-dates-full/package.json"))
let CLDR_NUMBERS_DIR = path.dirname(require.resolve("cldr-numbers-full/package.json"))

// These are the exceptions to the default algorithm for determining a locale's
// parent locale.
let PARENT_LOCALES_HASH = require("cldr-core/supplemental/parentLocales.json")
    .supplemental.parentLocales.parentLocale

let CALENDARS_LOCALES_HASH = glob.sync("*/ca-*.json", {
  cwd: path.resolve(CLDR_DATES_DIR, "main")
}).reduce((hash, filename) => {
  hash[path.dirname(filename)] = true
  return hash
}, {})

let NUMBERS_LOCALES_HASH = glob.sync("*/numbers.json", {
  cwd: path.resolve(CLDR_NUMBERS_DIR, "main")
}).reduce((hash, filename) => {
  hash[path.dirname(filename)] = true
  return hash
}, {})

new Promise((resolve, reject) => {
        try {
            const Cldr = require('cldrjs');
            Cldr.load(require('cldr-core/supplemental/likelySubtags'));

            // Load all bundles
            for (locale of require('cldr-core/availableLocales').availableLocales.modern) {
                Cldr.load(require(`cldr-localenames-modern/main/${locale}/languages`))
            }

            resolve(new CldrLanguages(Cldr))
        } catch (err) {
            reject(err)
        }
    });

let NUMBERS_LOCALES_HASH = glob.sync("*/numbers.json", {
  cwd: path.resolve(CLDR_NUMBERS_DIR, "main")
}).reduce((hash, filename) => {
  hash[path.dirname(filename)] = true
  return hash
}, {})

let CURRENCIES_LOCALES_HASH = glob.sync("*/currencies.json", {
  cwd: path.resolve(CLDR_NUMBERS_DIR, "main")
}).reduce((hash, filename) => {
  hash[path.dirname(filename)] = true
  return hash
}, {})

let DEFAULT_CONTENT_ARRAY = require("cldr-core/defaultContent.json")
    .defaultContent.map((value) => value.replace(/_/g, "-"))

// Some locales that have a `pluralRuleFunction` don't have a `dateFields.json`
// file, and visa versa, so this creates a unique collection of all locales in
// the CLDR for which we need data from.
let ALL_LOCALES_HASH =
    Object.keys(PARENT_LOCALES_HASH)
    .concat(Object.keys(CALENDARS_LOCALES_HASH))
    .concat(Object.keys(NUMBERS_LOCALES_HASH))
    .concat(Object.keys(CURRENCIES_LOCALES_HASH))
    .concat(DEFAULT_CONTENT_ARRAY)
    .sort()
    .reduce((hash, locale) => {
      hash[locale.toLowerCase()] = locale
      return hash
    }, {})

langs[lang] = `${langs[lang] || ""}${data}
`;
        });
      }
      return Promise.resolve();
    }

    const availableLanguages = document.querySelector(
      "meta[name=availableLanguages]").content.split(",");

    const negotiated = negotiateLanguages(
      navigator.languages,
      availableLanguages,
      {
        defaultLocale: "en-US",
        likelySubtags: likelySubtagsData.supplemental.likelySubtags
      }
    );

    this.props.setNegotiatedLanguages(negotiated);

    const promises = negotiated.map(language =>
      Promise.all(
        [
          fetch(`/static/locales/${language}/app.ftl`).then(response => addLang(language, response)),
          fetch(`/static/locales/${language}/experiments.ftl`).then(response => addLang(language, response))
        ]
      )
    );

    Promise.all(promises).then(() => {
      this.props.setLocalizations(langs);

describe('Ordinal rules', () => {
    for (var lc in ordinalData.supplemental['plurals-type-ordinal']) {
      describe(lc, () => testPluralData('ordinal', lc, getPlural))
    }
  })
})

describe('Cardinal rules', () => {
    for (var lc in cardinalData.supplemental['plurals-type-cardinal']) {
      describe(lc, () => testPluralData('cardinal', lc, getPlural))
    }
  })

return next();
  }
  const langs = header.replace(/\s/g, '').match(acceptLanguages) || ['en-US'];
  const preferred = langs
    .map(l => {
      const parts = l.split(';');
      return {
        locale: parts[0],
        q: parts[1] ? parseFloat(parts[1].split('=')[1]) : 1
      };
    })
    .sort((a, b) => b.q - a.q)
    .map(x => x.locale);
  req.language = negotiateLanguages(preferred, languages, {
    strategy: 'lookup',
    likelySubtags: langData.supplemental.likelySubtags,
    defaultLocale: 'en-US'
  })[0];
  next();
};