text: class Token {
      /**
       * 
       * @param {string} str token itself
       * @param {number} line line where it is found
       * @param {number} col column where it is found
       */
      constructor(type, str, line, col) {
          this.type = type
          this.str = str
          this.line = line
          this.col = col
      }
  }
  
  Token.TYPES = {
      WORD:     0,
      OPERATOR: 1,
      LITERAL:  2,
  }
  
  module.exports = Token