Sometimes you need to get a fresh list of 639-1, 639-2T, 639-2B or 639-3 language codes and their translations. Until now there was not an easy way to get them.
All data are available in json format in data/[language]/639-1.json. More formats might be available in the future.
- JS functions (with TS type definitions included)
- Directly, using files located in data folder
| Function | Arguments | Return value | Example usage |
|---|---|---|---|
getEnglishName(code: string) |
language code |
string | null
|
getEnglishName('cs') => Czech
|
getNativeName(code: string) |
language code |
string | null
|
getNativeName('cs') => čeština
|
getName(code: string, language = 'en') |
from language, to language? |
string | null
|
getName('cs', 'en') => Czech
|
isValid(code: string, availableIsoTypes?: IsoType[], moreInfo = false) |
language code, IsoType (below table), moreInfo |
boolean | { iso: IsoType | null; found: boolean; }
|
isValid('cs') => true, isValid('cs', ['639-1'], true) => { iso: '639-1'; found: true; }, |
getIsoCodesFromNativeName(nativeName: string, normalizeString = false) |
language name, should normalize string (lowercase and remove diacritics) |
IsoType[] | null
|
getIsoCodesFromNativeName('ČeŠtInA', true) => ['639-3', '639-2B', '639-2T', '639-1']
|
getAll639_1() |
- |
string[] (639-1 array) |
getAll639_1() => ['aa', 'ab', 'af'...]
|
getAll639_2B() |
- |
string[] (639-2B array) |
getAll639_2B() => ['aar', 'abk', 'ace'...]
|
getAll639_2T() |
- |
string[] (639-2T array) |
getAll639_2T() => ['aar', 'abk', 'ace'...]
|
getAll639_3() |
- |
string[] (639-3 array) |
getAll639_3() => ['aaa', 'aab', 'aac'...]
|
type IsoType = '639-1' | '639-2B' | '639-2T' | '639-3'
If you have some ideas (csv, another JSON format...) let me know or create PR.
Language matrix is generated by Node.js Intl API (version 22.2.0). If you would like to edit something, Create PR in Node.js Intl API. Wait until release and run yarn generate.
There are jest tests which tests basic functionality. Feel free to extend them or convert to vitest.
Getting the list of all available languages is from official list
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