code: function i18n (lang) {
      this.lang = lang;
      this.tran = (text) => {
          if (tranTxt[this.lang] && tranTxt[this.lang][text]) {
              return tranTxt[this.lang][text];
          }
          else {
              return text;
          }
      };
  }
docs: /*
  W3C def language codes is :
  language-code = primary-code ( "-" subcode )
  primary-code    ISO 639-1   ( the names of language with 2 code )
  subcode         ISO 3166    ( the names of countries )
  
  NOTE: use lowercase to prevent case typo from user!
  Use this as shown below.....