I18n for my react progress form

I18n.js

;(function ( I18n, undefined ) {

  var defaultLocale = "en-US";

  I18n.locale = defaultLocale;

  I18n.translations = [];

  I18n.translations["en-US"] = {
    name: {
      label: "Your Name",
        rules: {
          required: 'required here',
          regex: 'regex here'
        }
    },
    age: {
      label: "Your Age",
        rules: {
          required: 'required here',
          integer: 'integer here'
        }
    },
    email: {
      label: "Your E-Mail",
        rules: {
          required: 'required here',
          email: 'email here'
        }
    },
    lang: {
      label: "Your Favorite Language",
        rules: {
          required: 'required here',
          regex: 'regex here'
        }
    }
  };

  I18n.translations["pt-BR"] = {
    name: {
      label: "Seu Nome",
        rules: {
          required: 'campo obrigatório',
          regex: 'informe o nome e sobrenome'
        }
    },
    age: {
      label: "Sua Idade",
        rules: {
          required: 'campo obrigatório',
          integer: 'somente números'
        }
    },
    email: {
      label: "Seu E-mail",
        rules: {
          required: 'campo obrigatório',
          email: 'informe um e-mail válido'
        }
    },
    lang: {
      label: "Sua linguagem favorita",
        rules: {
          required: 'campo obrigatório',
          regex: 'linguagem errada: digite "javascript" ;)'
        }
    }
  };

  I18n.getTranslation = function () {
    return this.translations[ this.locale ] || this.translations[ defaultLocale ];
  };

  I18n.translate = function ( scope ) {
    var translation = this.getTranslation();
    var scopes = scope.split(".");
    while ( scopes.length ) {
      translation = translation[ scopes.shift() ];
      if( translation === undefined || translation === null ) {
        break;
      }
    }
    return translation || 'Whoops!';
  };

  I18n.t = I18n.translate;

})( typeof exports === undefined ? ( this.I18n || (this.I18n = {})) : exports );

using.js

var locale = require('browser-locale');
var I18n   = require('../utils/I18n');

I18n.locale = locale();

console.log( I18n.t("name.rules.required") );
console.log( I18n.t("name.label") );