Meteor translate module

translate.html

<template name="helloWorld">
{{ translate 'HELLO'  }}
</template>

translate.js

/**
 *
 *  author : Lainé Louis
 *
 *
 *  Translate module.
 *  Using for i18n.
 *
 *  The module doesn't use navigator.language but Sessions.
 */

/**
 *
 * Will contain all messages.
 *
 * @type {*}
 */
var messages = {
    'HELLO': {
        'en' : 'Hello World ! ',
        'fr' : 'Bonjour le monde ! '
    }
};

/**
 * Set the current locale
 * @param locale
 */
setLocale = function(locale){

    Session.set('locale', locale);

    Deps.flush();
};

/**
 * Get the current locale
 * @returns {*}
 */
getLocale = function(){
    if(Session.get('locale') === undefined){
        Session.setDefault('locale', 'en');
    }
    return Session.get('locale');
};

/**
 * This function return a message corresponding to the key passed in param.
 * @param key
 * @returns {*}
 */
function getMessage(key){

    var locale = getLocale();

    if(messages !== undefined && messages[key] !== undefined && messages[key][locale] !== undefined){
        return messages[key][locale]
    }else{
        return key;
    }
}


/**
 * TRANSLATE template for handlebar.
 * Translate in the Session locale the key message.
 */
Handlebars.registerHelper('translate', function(key){
    return getMessage(key);
});