Minimal i18n plugin for HapiJS using node-i18n

hapi-i18n.js

'use strict';

import _ from 'lodash';
import i18n from 'i18n';

import {version} from '../../package.json';

registerI18n.attributes = { name: 'i18n', version };
export default registerI18n;

const i18nApi = [ '__', '__n', 'setLocale', 'getLocale', 'getCatalog' ].reduce(function(api, methodName) {
  api[methodName] = function(...args) {
    return this.raw.req[methodName](...args);
  };

  return api;
}, {});

function registerI18n(server, options, next) {
  i18n.configure(_.defaults({}, options));

  server.ext('onPreHandler', function(request, reply) {
    const { req, res } = request.raw;
    i18n.init(req, res);
    _.mixin(request, i18nApi);
    reply.continue();
  });

  next();
}

// Then in code after registering...

server.route({
  method: 'GET',
  path: '/',
  handler: function(request, reply) {
    var msg = request.__('Hello! Nice to meet you');
    reply(msg);
  }
});