code: function wJson(path, data, options, callback) {
  
      if (typeof options === "function") {
          callback = options;
          options = {};
      } else if (typeof options === "number") {
          options = {
              space: options
          };
      } else if (typeof options === "boolean") {
          options = {
              new_line: options
          };
      }
  
      options = options || {};
  
      options.space = typeof options.space === "number" ? options.space : 2;
      options.new_line = !!options.new_line;
  
      Fs["writeFile" + (typeof callback === "function" ? "" : "Sync")](
          path
        , JSON.stringify(data, null, options.space) + (options.new_line ? "\n" : "")
        , callback
      );
  }
docs: wJson
  Writes a JSON file.
  
  @name wJson
  @function
  @param {String} path The JSON file path.
  @param {Object} data The JSON data to write in the provided file.
  @param {Object|Number|Boolean} options An object containing the fields below.
  If boolean, it will be handled as `new_line`, if number it will be handled as `space`.
  
  - `space` (Number): An optional space value for beautifying the json output (default: `2`).
  - `new_line` (Boolean): If `true`, a new line character will be added at the end of the stringified content.
  
  @param {Function} callback An optional callback. If not passed, the function will run in sync mode.