Take in account the validated value

[danielo515]

Hello,

One of the nicest (and importants) features of Joi is that it performs types coercion when possible.
For example, with the following Joi definition

const schema Joi.object({ 
     a: Joi.number().required()
 });

You get the following validation :

const {error, value} = schema.validate({ a: '1' });
error // => null
value // => {a: 1} the string '1' is converted to 1

As you can see, thanks to type coercion there is no error and the value has the correct types.
However, on Seneca only the error is taken in account, and if the validation passes then the original msg is provided to the handler. This is a big problem because the original message may not be 100% correct (ej: the a was a string)

Not sure if this should be fixed on seneca-joi or on seneca itself, but it is stopping us from using seneca-joi.

Regards

[rjrodger]

great feature idea - but this belongs in a separate category of plugins that modify the original message - adding an issue in the seneca repo
leaving open as reminder

[rjrodger]

senecajs/seneca#717