CliOutput

Command output writer.

This writer is used by the output of the cli handler (Cli).

In case the value is an exception then it's treated as CliOutput._errorOutput otherwise the value is treated as CliOutput._successOutput.

When an action is executed through a handler it can define options for readers and writers via Metadata support. For instance, you can use it to provide a custom result for a specific handler:

class MyAction extends Mebo.Action{

   // ...

   async _perform(data){
     // ...
   }

   async _after(err, value){
     // defining a custom result that only affects the web handler
     // this call could be done inside of the _perform method. However, we
     // are defining it inside of the _after to keep _perform as
     // abstract as possible. Since, _after is always called (even during
     // an error) after the execution of the action, it provides a way to
     // hook and define custom metadata related with the result.
     if (!err){
         // defining a custom output option
         this.setMeta('$cliResult', {
             message: 'My custom cli result!',
         });
     }
   }

   // ...
}

Options Summary

Option Name	Description	Default Value
result	Overrides the value returned by Writer.value to an arbitrary value (only affects the success output)