Export store types for typescript usage.

I was trying to create a CRUD class that could take any type in, and create read write update delete, but in doing so, I was missing some of the types inside the store index file.

In my local svelte index.d.ts file I added the exports and everything was working great.

import {
    writable,
    Updater,
    Subscriber,
    Invalidator,
    Unsubscriber
} from "svelte/store";

class StoreModule<T> {
    public subscribe: (
        run: Subscriber<T>,
        invalidate?: Invalidator<T>
    ) => Unsubscriber;
    private update: (updater: Updater<T>) => void;

    constructor(initialValue: T) {
        const { update, subscribe, set } = writable(initialValue);
        this.subscribe = subscribe;
        this.update = update;
    }

    public deleteById(id: string) {}
    public updateById(valToUpdate: T, id: string) {}
    public addNew(newItem: T) {}
}

export type Todo = {
    id: string;
    title: string;
};

export const todos = new StoreModule<Todo[]>([
    { title: "initialTodo", id: Math.random().toString() },
]);

The types not exported are Updater, Subscriber, Invalidator, Unsubscriber.

I might be jumping the gun on this, as I know typescript support is still not merged into the production build of svelte, but in my opinon exporting the types is not destructive in any way.

[parker-codes]

You can type-hint when creating a store, which will then pass it along to subscribers/etc.

[YogliB]

Any updates?