react-native-setlang

How to install

yarn add react-native-setlang
or
npm i react-native-setlang

How it works

So simply.

translate.ts

import setLang from 'react-native-setlang';

const en = {
  "welcome": "Hello world",
};
const fr = {
  "welcome": "Bonjour le monde",
};

export default new setLang({fr,en});

App.tsx

import userLang from './translate';

const welcomeText = userLang.t("welcome");

console.log(welcomeText);
// 'Hello world' or 'Bonjour le monde'

If user has no language preference ?

No problem :), if user has not language preference, SetLang will chooses the english version of your Objects. If you do not have an english version, it will choose the first one of your Object you setted in new setLang({fr,en}).

If user has those preference: "en", "fr". And I just have a translation for "es" ?

No choice, SetLang will uses es version.

How to use it correctly ?

Make a translation repository:

src/
    translation/
      index.ts
      en.ts
      fr.ts
    App.tsx

Next

In your index.ts you write something like this:

import en from './en';
import fr from './fr';
import setLang from 'react-native-setlang';
export default new setLang({en,fr});

In en.ts and/or fr.ts

export default {
  like: 'J\'aime',
};

And in App.tsx

import ul from './translation';
// OR
// import userLang from './translation'

const iLike = ul.t('like');