Typescript rewrite

[PeterKottas]

🎉 It's alive 🎉

Highlights of this PR:

• Typescript rewrite done
• All tests working
• Prettier runs by reading tslint config.
• f12 navigates between projects properly
• Fixed a gazilion weird little nuances that had to do with types, typos or problems in code.
• This also fixes a lot of existing comments that were pointing to various issues. Most of these had something to do with es-link or flow types in general
• Changed tooling section in readme
• Added a Known issue in readme (sometimes vscode locks declaration files so you have to run build again)
• Removed all traces of flow and generally cleaned up the code
• Declarations are exported along with js files and js.maps. That means typescript people will love us.

Admittedly, this is probably biggest PR in the history of universe :D I rly tried to check everything to make your life simple. Hoping it will go as smooth as possible. Also I am here for any questions you might have.

[PeterKottas]

Nail biter waiting for those green checks to appear. Going to get myself a drink now 🍺

[aeneasr]

Oh shit, this is massive! There's no way for me to review it so I'll probably just check if and how it works locally and then merge. We might have to fix a couple of things as the next releases come rolling in.

[PeterKottas]

Yeah that's what I though. +51,913, −106,061, Files changed 289 says it all. I did extensive testing and all seems fine. But please, by all means, dig in ;)

Also I assumed this release will be 0.6.0 and wrote upgrade docs. Not extensive and it can be changed, just want to make sure I won't forget.

[PeterKottas]

Ok this seems to be pretty stable now. I am branching off and working on plugins as discussed in #580. I know it's around Christmas and you might be busy with more enjoyable things, but if we could merge this in (after testing), it would be swell :) I have few more features planned that all need to branch of this. So it will be a huge relief when this is done.

[PeterKottas]

Hi there, any chance you managed to look at this? I know Christmas time can be busy but I was hoping to get this merged in along with #630 as I have plenty of work to take advantage of this on our side.

[aeneasr]

Sorry, pre-christmas was just insane. I'll try to get it done on on Saturday/Sunday

[PeterKottas]

Awesome mate! Thanks for info, I am here if you need any help with these.

[aeneasr]

Awesome! Looks like everything works perfectly

[PeterKottas]

Phew :)