chore: remove the .js extension from import statements

[hissinger]

I am developing a wrapper for react-native using peerjs. I am getting a build error and have fixed it.

[WofWca]

Idk idk. I heard specifying actual file path is the norm of ES6 imports.

[louwers]

I heard specifying actual file path is the norm of ES6 imports.

Yep, merging this is a bad idea.