fixes: unable to build

[fxnm]

Closes #418 by adding socket.io-client and pusher-js as peer dependencies

[taylorotwell]

@SanderMuller can you take a look at this?

[SanderMuller]

@SanderMuller can you take a look at this?

While adding socket.io-client and pusher-js as peerDependencies technically resolves the TS errors (especially with skipLibCheck: false), it introduces warnings for users who don’t use these drivers.

We want to avoid suggesting a Pusher user to install `socket.io-client and vice versa.

I've tried to fix this error via #420 which avoids global .d.ts exposure of these types entirely, so that TypeScript errors only occur if the corresponding driver is explicitly imported.

[SanderMuller]

@taylorotwell I think this PR is the easiest approach to fixing the issue, however, it's not ideal (see discussion in #420). So my advise would be to either accept this PR or to accept that "skipLibCheck": false causes error in these cases.

@fxnm can you mark the PR ready for review again? Otherwise Taylor won't see these comments

[fxnm]

@taylorotwell could you create a release?
Thx