prettyPrint does not work well with multiple servers

I instantiate 3 different servers and register hapi-pino into all 3 with prettyPrint=true, but only the first server to register will have pretty logs.

[ferrao]

Problem is this line :

https://github.com/pinojs/hapi-pino/blob/8529345f330050302eb6b867b318a767dd604dcd/index.js#L36

Because I am registering the server multiple times with the same options object, after the first registration the original options object does not contain the prettyPrint flag enabled.

Its easy for me to supply a different options object on every registration, but I would argue that if the registration function alters the options object, then it should clone it internally to prevent this sort of problems, what do you think @mcollina ?

I have already made the necessary changes, but for some reason not obvious to me the tests are failing now. If you think this is the way to go I’ll put in an extra effort to fix them 😃

[mcollina]

It is this one: https://github.com/mcollina/split2#ndj---newline-delimited-json