Dead simple JavaScript i18n implementation

i18n.js

// dead stupid simple i18n implementation

/**
 * i18n function allows to pick a string from a json (could be yml as well) and render it based on language.
 *
 * Examples:
 * ```
 * const enUS = i18n('en-us'); // load a function that provides all en-us strings.
 * const ptBR = i18n('pt-br'); // load a function that provides all pt-br strings.
 *
 * const title = enUS('hello world'); // assign the value of 'hello world' entry from the './strings.en-us.json'.
 * const title = enUS('hello world'); // assign the value of 'hello world' entry from the './strings.pt-br.json'.
 */
module.exports = (lang, baseArgs = {}) => (key, args = {}) => {
  const texts = require(`./strings.${lang}.json`);
  let template = texts[key];
  args = Object.assign({}, baseArgs, args);

  return (key, args = {}) => {
    if (args) {
      Object.keys(args).forEach(key => {
        const rgxp = new RegExp(`{{${key}}}`, 'gi');
        template = template.replace(rgxp, args[key]);
      });
    }

    return template;
  };
};