Re-implement core of which-key

[stevenguh]

Fix #38, #51.

This pull request contains a rewrite of the core of which-key to

• Fix race condition with fast key input (#38)
• Add the option to selectively hide items from menu (#51)

Tests performed:

• Added unit tests
• Manual test

Manual tests

Race condition

1. On Linux, sleep 1; xdotool type " "; sleep 0.001; xdotool type "mx"
2. Switch focus to VSCode on the markdown buffer
3. The "+Text" for markdown is shown

Other smoke tests

• Tested transient menu
• Tested desc bind menu (C-h)
• Tested hide option via overrides

@MarcoIeni Just wondering if you have some time to try it out and make sure I am not breaking anything major?

[MarcoIeni]

Sure, I will try to test this today

[MarcoIeni]

I followed the contributing guide on how to do the first setup. Then I used this usually by typing spc. I am testing the right thing or am I just testing normal VSpaceCode?

By the way:

• The race condition is fixed for me (I run the mx test in linux).
• transient menu works

Doubts: how do I test this?

Tested desc bind menu (C-h) Tested hide option via overrides

[stevenguh]

Then I used this usually by typing spc. I am testing the right thing or am I just testing normal VSpaceCode?

That should work, and should be using the new which key core.

Tested desc bind menu (C-h)

Press Control-h in any which key menu to launch the "Search binding" menu.

Tested hide option via overrides

Try adding a binding with "display": "hidden" in the override. That item will not be shown but can still be trigger by key.

For example: The blame shouldn't be shown in the UI of the <spc> g menu, but should still works with b key.

"vspacecode.bindingOverrides": [
        {
            "keys": "g.b",
            "name": "Blame",
            "type": "command",
            "display": "hidden",
            "command": "gitlens.toggleFileBlame"
        },
]

[MarcoIeni]

Both works fine for me!

[stevenguh]

Thanks Marco :)