Improve and enrich exported types

[slaesh]

Feature request

I have no clue what's the current state of this lib, maybe this would come later on..
But the exported types should be improved and enriched.

For example:

Currently the interface for the RealtimeChannel's on call could be easily improved.

realtime-js/src/RealtimeChannel.ts

Line 125 in 05d098c

on(type: string, filter?: { [key: string]: string }, callback?: Function) {

Instead of

on(type: string, filter?: { [key: string]: string }, callback?: Function) {}

we should go with this:

on(type: string, callback: Function, filter?: { [key: string]: string })

1. why register a listener without a callback? so make it mandatory..
2. since point 1, move the optional filters at the end
3. it would be great not to use just Function.. What about making it typed instead? =)

[w3b6x9]

exported types should be improved and enriched

@slaesh absolutely agree with you.

We're planning some big changes to this client lib and will improve the types. Will incorporate some of the feedback you've given here.

[w3b6x9]

@slaesh don't want you to think we've forgotten about this. We'll be working on types in the next few weeks. Apologies on the delay!