get-user-locale
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    1.4.0 • Public • Published

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    Get-User-Locale

    A function that returns user's locale as an IETF language tag, based on all available sources.

    tl;dr

    • Install by executing npm install get-user-locale or yarn add get-user-locale.
    • Import by adding import getUserLocale from 'get-user-locale.
    • Do stuff with it!
      const userLocale = getUserLocale();

    User guide

    getUserLocale()

    A function that returns user's preferred locale as an IETF language tag, based on all available sources.

    Sample result

    'de-DE'

    Usage

    import getUserLocale from 'get-user-locale';

    or

    import { getUserLocale } from 'get-user-locale';

    getUserLocales()

    A function that returns an array of user's preferred locales as an IETF language tags, based on all available sources.

    Sample result

    ['de-DE', 'de', 'en-US', 'en']

    Usage

    import { getUserLocales } from 'get-user-locale';

    Technical details

    There are at least five ways of determining user's locale:

    • window.navigator.languages
    • window.navigator.language
    • window.navigator.userLanguage
    • window.navigator.browserLanguage
    • window.navigator.systemLanguage

    ...languages is an array of strings, the others are strings. Some browsers return mixed-case IETF language tags (e.g. de-DE), while others return lowercase ones (e.g. de-de). Finally, non-browser environments will not return anything, so you need a fallback.

    Get-User-Locale does the following:

    • Combines all of them into one sane set of locales - in that particular order,
    • Dedupes them,
    • Fixes invalid, lowercased IETF language tags (so that the part after - is always uppercased),
    • Adds a fallback to en-US, so if all else fails, you will get a result that won't crash your app.

    License

    The MIT License.

    Author

    Wojciech Maj
    kontakt@wojtekmaj.pl
    http://wojtekmaj.pl

    Install

    npm i get-user-locale

    DownloadsWeekly Downloads

    271,022

    Version

    1.4.0

    License

    MIT

    Unpacked Size

    14.3 kB

    Total Files

    13

    Last publish

    Collaborators

    • wojtekmaj