(Draft) Add generic types

[jst-r]

This PR adds generic type parameters to the datatables svelte library.

Changes are explained in some level of detail in the issue #31. I feel that picture below illustrates the idea pretty well.

Probably the easiest way to get a feel for the new feature is to clone the fork, npm install, and npm run dev. The datatables tab maps to the src/routes/examples. There you can see the autocomplete and static checks in action.

src/lib/core/Context.ts is a good starting point to look at the implementation as it references almost everything else. It also contains some general type definitions, which isn't ideal, but probably fine for now.

I haven't updated the documentation yet, but I'll try to do it today.

[vincjo]

No worries about the documentation site, there is no rush and I can take care of it gradually if you don't have time.

I was wondering if it was possible - later - to export generic T type from DataHandler ? (maybe it's not relevant); So that we can simplify the composition of the showcase components

From:

<script lang="ts">
     type T = $$Generic<{ [key: string]: unknown }>
     import type { DtatHandler } from '$lib/core'
    export let handler: DataHandler<T>
</script>

to:

<script lang="ts">
      import type { DtatHandler, T } from '$lib/core'
      export let handler: DataHandler<T>
</script>

[jst-r]

I'm not aware of any ways to do it like that. Howerer, we can create an instance of handler on the module level, and import in in the example.

[jst-r]

Like

// index.ts or something else
export const handler = new DataHandler(myData);

// Component.svelte
<script lang="ts">
import { handler } from "./index"

[vincjo]

Ok i get it thx. That's fine as it is then, the type declaration inside components make it more explicit

[vincjo]

I don't get why you don't appear as a contributor. Did I miss a step?