code: function checkDeclDelim(i) {
    if (i >= tokensLength) return 0;
  
    return (tokens[i].type === TokenType.Newline ||
        tokens[i].type === TokenType.Semicolon) ? 1 : 0;
  }
docs: Check if token is a semicolon
  @param {number} i Token's index number
  @return {number} `1` if token is a semicolon, otherwise `0`