i18n

Summary

• store under ./translations folder, .yml files that corresponds to an available language (e.g. .translations/en-us.yml)
• translation files are interpreted by messageformat engine engine
• each translation file contains a set of lines as key:value, e.g:

  SHARED_ERROR_EMAIL_INVALID: The email "{email}" is invalid.
  USERS_ERROR_USER_NOT_FOUND: User "{userId}" was not found.

• the default language is set by process.env.LANGUAGE and is available in all requests by req.locale prop

Usage

# .translations/en-us.yml
TRANSLATED_HELLO: Hello "{name}". Welcome!

# .translations/pt-br.yml
TRANSLATED_HELLO: Olá "{name}". Bem vindo!

// index.js
process.env.LOCALE = 'en-us.yml';
const server = require('@leonardosarmentocastro/server');
const i18n = require('@leonardosarmentocastro/i18n');

(async () => {
  await server.start(8080, {
    connect: (app) => {
      i18n.connect(app);

      app.get('/translated', (req, res) => {
        const key = 'TRANSLATED_HELLO';
        const args = { name: 'Leonardo' };
        const translation = i18n.translate.get(key, req.locale, args);

        return res.status(200).send(translation);
      });
    },
  });
})();

curl -X GET http://localhost:8080/translated -H 'accept-language: en-us'
# Hello "Leonardo". Welcome!

curl -X GET http://localhost:8080/translated -H 'accept-language: pt-br'
# Olá "Leonardo". Bem vindo!