I18N modules

Isolated I18N modules for your components. Like CSS modules but for i18n ;)

npm install --save i18n-modules

Benefits

• No more large files with translations for the whole website.
• No more global scope.
• No more broken texts.

Getting Started

Client

The steps below use webpack to organize building process. You are free to use anything else.

Step 1:

First of all you should set available locales with the global variable LANGS and a locale for the current bundle with BUNDLE_LANG:

    plugins: [
        new webpack.DefinePlugin({
            LANGS: JSON.stringify(['en', 'ru']),
            BUNDLE_LANG: JSON.stringify(bundleLang)
        })
    ]

Step 2:

Set an ignore pattern for unnecessary languages in the current bundle:

    plugins: [
        new webpack.IgnorePlugin(new RegExp(`^\.\/(?!${bundleLang}$)`), /i18n$/),
        new webpack.DefinePlugin({
            LANGS: JSON.stringify(['en', 'ru']),
            BUNDLE_LANG: JSON.stringify(bundleLang)
        })
    ]

Step 3:

Create a folder with translations for your component:

// src/components/MyComponent/i18n/en.js
 
module.exports = {
    'hello_world': 'Hello, world!'
};

// src/components/MyComponent/i18n/ru.js
 
module.exports = {
    'hello_world': 'Привет, мир!'
};

// src/components/MyComponent/i18n/index.js
// Include translations
 
module.exports = require('i18n-modules').include(lang => require(`./${lang}`));

Step 4:

Use translations from your component:

// src/components/MyComponent/index.js
 
const t = require('./i18n');
 
class MyComponent extends Component {
    render() {
        return <h1>{t('hello_world')}</h1>
    }
}

Node

If you want to use i18n modules with node.js, for example, to render react components, you should set a locale for the request before call translation functions.

I18N.setLang(req.lang);
res.status(200).send(...rendering...);

If your project renders client code, don't set BUNDLE_LANG and include all translations into the server bundle.

plugins: [
    new webpack.DefinePlugin({
        LANGS: JSON.stringify(['en', 'ru'])
    })
]

Examples

See example folder. Clone repo and run npm i && npm start.

Other

Supports interpolation, pluralization. Has Polyglot.js under the hood.