Add Typescript 3.3

[SorenTheBrave]

• Name: Typescript
• Version: 3.2

[zen0wu]

Up this. I would suggest go all the way up to 3.2, since it's already there and totally (in my experience) backward compatible.

[kazk]

Added TypeScript 3.3. 368 kata wasn't compatible. Looks like most of the reference solution or helper function in tests has implicit any.

TypeScript 3.3 sets --target es2017 and --strict. I've decided to turn on --strict because it's the default when doing tsc --init and to disallow pasting JavaScript and calling it a translation.

[kazk]

Here's a list of TypeScript kata that needs update. Most of them seems like they have implicit any somewhere on the author's side (reference solution, test helpers). Maybe they just copied JavaScript version.

Any help updating them will be appreciated.

[zen0wu]

Thanks @kazk! Would be love to help. Since I've never done that, is there a tutorial where I can get started? Can I contribute to a kata that's somebody else? or hasn't solved myself?

[kazk]

@shivawu Thanks! See #690 (comment) for how to do it.

That example is for Rust, but it's the same work flow. It'll tell you what's wrong when you validate solution with the language version set to 3.3. I've fixed some and it was mostly just missing types.

I'd recommend solving them first because you won't be able to gain progress after editing kata.