Convert to TypeScript

[fregante]

cc @nickytonline if you wanna take a look. The API hasn't changed yet, but we have a chance to fix the type of Options now, as talked about in refined-github/refined-github#1780 (comment)

Most I'd like to know if there's a way to pass typeof defaults through to the defaults — this may be easier once the constructor accepts {defaults}

Problem to keep in mind: microsoft/TypeScript#5341

[nickytonline]

I'll take a look at this this weekend.

[nickytonline]

Looking at it, I think everywhere you have OptionsSync.Options, can be replaced by T = OptionsSync.Options and use T wherever OptionsSync.Options is used for types. I think this makes sense unless I'm missing something since anyone that consumes this package will have their own set of options. Happy to chat more about this whenever you're free.

e.g.

getAll<T = OptionsSync.Options>(): Promise<T> {
   ...
}

[fregante]

Is there a way to have the types associated with the instance instead of having each method generic?

Also because T should always match typeof Definitions.defaults (which will be provided in the constructor after 28bc67f, separate branch)

[nickytonline]

I don't think you can get away without generics. I'd have to mess around with this a bit more once you're other branch is merged or up for review. Let me know when that is up or merged and I'll find some time to tinker.

[fregante]

It looks like I can have a “generic class”, so the instance will return T = defaults, instead of specifying the type in the getter setter