code: function Deffy(input, def, options) {
  
      // Default is a function
      if (typeof def === "function") {
          return def(input);
      }
  
      options = Typpy(options) === "boolean" ? {
          empty: options
      } : {
          empty: false
      };
  
      // Handle empty
      if (options.empty) {
          return input || def;
      }
  
      // Return input
      if (Typpy(input) === Typpy(def)) {
          return input;
      }
  
      // Return the default
      return def;
  }
docs: Deffy
  Computes a final value by providing the input and default values.
  
  @name Deffy
  @function
  @param {Anything} input The input value.
  @param {Anything|Function} def The default value or a function getting the
  input value as first argument.
  @param {Object|Boolean} options The `empty` value or an object containing
  the following fields:
  
  - `empty` (Boolean): Handles the input value as empty field (`input || default`). Default is `false`.
  
  @return {Anything} The computed value.