Specify transport type or autocompletion.

[nayounsang]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

import { io } from "socket.io-client";
    const newSocket = io(process.env.HELLO, {
      withCredentials: true,
      transports: [], // something...
    });

Describe the solution you'd like
A clear and concise description of what you want to happen.
I was able to specify specific transports.
I think it would be more convenient if it was auto-completed.

Describe alternatives you've considered
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A different type instead of string[]
Additional context
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