User:Mvolz/setLanguageToEn.js

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/* Set user lang */
mw.loader.using('mediawiki.user', function() {
    if ( mw.user.options.get('language') !== 'en' ) {
        ( new mw.Api() ).postWithToken( 'csrf', {
            action: 'options',
            change: 'language=en'
        } ).done( function() {
            mw.loader.using([], function(){
                mw.notify( 'User language set to "en". Please refresh the page.' );
            } );
        } );
    }
} );