code: function parseDeclaraion (declaration) {
      const keyRegexp = /(?:\$)([\w-]+)(?:[\s\n\r\t])*(?::)/;
      const valueRegexp = /(?::)(?:[\s\n\r\t])*(.+)(?:[\s\n\r\t])*(?:;)/;
  
      const matchKey = declaration.match(keyRegexp);
      const key = matchKey[1].trim();
  
      const matchValue = declaration.match(valueRegexp);
      const value = matchValue[1].trim();
  
      return { key, value };
  }
docs: Parses variable declaration
  Returns $key: $value pair
  @param declaration
  @returns {{key: (*|string), value: (*|string)}}