i18n-iso-languages

i18n for ISO 639 language codes. We support Alpha-2, Alpha-3 B and T codes from https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes

This packages is heavily based on i18n-iso-countries.

We intent to keep the interface of i18n-iso-languages as close as possible to i18n-iso-countries.

Installing

Install it using npm: npm install @cospired/i18n-iso-languages

If used in a browser environment, you will need to manually install the local you wish to support.

var languages = require("@cospired/i18n-iso-languages");

// Support german & english languages.
languages.registerLocale(require("@cospired/i18n-iso-languages/langs/en.json"));
languages.registerLocale(require("@cospired/i18n-iso-languages/langs/de.json"));

Code to Language

Get the name of a language by it's ISO 639-1 (Alpha-2), ISO 639-2/T or B (Alpha-3) code

var languages = require("@cospired/i18n-iso-languages");
console.log("de (639-1/Alpha-2) => " + languages.getName("de", "en")); // German
console.log("en (639-1/Alpha-2) => " + languages.getName("de", "de")); // Deutsch
console.log("de (639-2T/Alpha-3) => " + languages.getName("deu", "en")); // German
console.log("de (639-2B/Alpha-3) => " + languages.getName("ger", "en")); // German

Get all names by their ISO 639-1 code

var languages = require("@cospired/i18n-iso-languages");
console.log(languages.getNames("en")); // { 'ab': 'Abkhazian', 'aa': 'Afar', [...], 'za': 'Zhuang', 'zu': 'Zulu' }

Supported languages (ISO 639-1)

br: Breton (based on https://br.wikipedia.org/wiki/Listenn_glok_kodoù_ISO_639-1)
cs: Czech (based on https://cs.wikipedia.org/wiki/Seznam_kódů_ISO_639-1)
da: Danish (based on https://da.wikipedia.org/wiki/ISO_639-1)
de: German (by native speaker)
en: English (ISO 639-1 standard names)
es: Spanish (based on https://es.wikipedia.org/wiki/ISO_639-1)
fi: Finnish (based on https://kotoistus.fi/suositukset/suositukset-kielet-fi-koodi/)
fr: French (based on https://fr.wikipedia.org/wiki/Liste_des_codes_ISO_639-1)
hu: Hungarian (based on https://hu.wikipedia.org/wiki/ISO_639-1_nyelvkódok_listája)
id: Indonesian (based on https://github.com/umpirsky/language-list/blob/master/data/id/language.json)
is: Islandic (based on https://is.wikipedia.org/wiki/Listi_yfir_tungumálakóða_%C3%AD_ISO_639-1)
it: Italian (based on https://github.com/umpirsky/language-list/blob/master/data/it/language.json)
ja: Japanese (by professional translator)
lt: Lithuanian (based on https://lt.wikipedia.org/wiki/Sąrašas:ISO_639-1_kodai)
lv: Latvian (based on https://lv.wikipedia.org/wiki/ISO_639-1_kodu_saraksts)
ms: Malay (based on https://github.com/umpirsky/language-list/blob/master/data/ms/language.json)
nl: Dutch (based on https://nl.wikipedia.org/wiki/Lijst_van_ISO_639-codes)
no: Norwegian (based on https://no.wikipedia.org/wiki/Liste_over_ISO_639-1-koder)
pl: Polish (based on https://pl.wiktionary.org/wiki/Wikis%C5%82ownik:Kody_j%C4%99zyk%C3%B3w)
pt: Portuguese (European) (based on https://pt.wikipedia.org/wiki/ISO_639)
ro: Romanian (based on https://ro.wikipedia.org/wiki/Lista_codurilor_ISO_639-1)
ru: Russian (by professional translator)
sv: Swedish (based on https://sv.wikipedia.org/wiki/ISO_639)
th: Thai (based on https://github.com/umpirsky/language-list/blob/master/data/th/language.json)
uk: Ukrainian (based on https://uk.wikipedia.org/wiki/Список_мовних_кодів_ISO_639)
vi: Vietnamese (based on https://github.com/umpirsky/language-list/blob/master/data/vi/language.json)
zh: Chinese (by professional translator)

List of ISO 639-1 codes

Language to Code

var languages = require("@cospired/i18n-iso-languages");
console.log("German => " + languages.getAlpha2Code('German', 'en'));
// German => de

console.log("German => " + languages.getAlpha3TCode('German', 'en'));
// German => deu

console.log("German => " + languages.getAlpha3BCode('German', 'en'));
// German => ger

Codes

Convert ISO 639-2 (Alpha-3) to ISO 639-1 (Alpha-2) code

var languages = require("@cospired/i18n-iso-languages");
console.log("deu (Alpha-3) => " + languages.alpha3ToAlpha2("deu") + " (Alpha-2)");
// deu (Alpha-3 T) => de (Alpha-2)

var languages = require("@cospired/i18n-iso-languages");
console.log("ger (Alpha-3 B) => " + languages.alpha3ToAlpha2("ger") + " (Alpha-2)");
// ger (Alpha-3 B) => de (Alpha-2)

Convert ISO 639-1 (Alpha-2) to ISO 639-2 (Alpha-3) code

var languages = require("@cospired/i18n-iso-languages");
console.log("de (Alpha-2) => " + languages.alpha2ToAlpha3T("de") + " (Alpha-3 T)");
// de (Alpha-2) => deu (Alpha-3 T)

var languages = require("@cospired/i18n-iso-languages");
console.log("de (Alpha-2) => " + languages.alpha2ToAlpha3B("de") + " (Alpha-3 B)");
// de (Alpha-2) => ger (Alpha-3 B)

Get all ISO 639-1 (Alpha-2) codes

var languages = require("@cospired/i18n-iso-languages");
console.log(languages.getAlpha2Codes());
// { 'aa': 'aar', 'ab': 'abk', [...], 'za': 'zha', 'zu': 'zul' }

Get all ISO 639-2 (Alpha-3) codes

var languages = require("@cospired/i18n-iso-languages");
console.log(languages.getAlpha3TCodes());
// { 'aar': 'aa', 'abk': 'ab', [...], 'zha': 'za', 'zul': 'zu' }

var languages = require("@cospired/i18n-iso-languages");
console.log(languages.getAlpha3BCodes());
// { 'aar': 'aa', 'abk': 'ab', [...], 'zha': 'za', 'zul': 'zu' }

Validate language code

var languages = require("@cospired/i18n-iso-languages");
console.log(languages.isValid("de"), languages.isValid("ger"), languages.isValid("xx")));
// true, true, false

Contribution

To add a language:

add a json file under langs/ (in alphabetical order)
add the language to the data object in enty-node.js at the top (in alphabetical order)
add language to section Supported languages in README.md (in alphabetical order)
add language to keywords in package.json (in alphabetical order)
add language to the "unreleased" section of the changelog
run npm install && make test to make sure that tests are passing
open a PR on GitHub

Please do not change the version in package.json, package-lock.json or changelog.md.

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