refactor: transform test/connect to ts

[myNameIsDu]

transform test/connect to ts

link: #1737

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[myNameIsDu]

@markerikson Since this file is relatively large, I want to let you review it first, so that you can find out the problem of my writing method earlier 😃

[markerikson]

So just to confirm, the rest of the file is temporarily commented out until you get a thumbs-up from me on the approach?

The code seems reasonable so far, so go ahead.

FYI, I think I'm just going to go ahead and merge the typescript-port branch into master right now. We can update this PR to base against master after that.

[markerikson]

Bah, Github auto-closed this because I merged and it deleted that branch. Fixing and pointing this at master

[markerikson]

Drat. It won't let me edit the base or reopen this PR.

Can you please open up a new PR targeting master with your changes?