fix: fix datastore factory (#65)

* fix: fix datastore factory

The factory reference type can't extend the Datastore interface directly.

We want the class instance to implement the interface and not the class (Object) reference.

* fix: feedback

* fix: export

* fix: YAGNI

Author: hugomrdias

src/index.js

@@ -2,7 +2,6 @@
 
 /**
  * @typedef {import('./types').Datastore} Datastore
- * @typedef {import('./types').DatastoreFactory} DatastoreFactory
  * @typedef {import('./types').Batch} Batch
  * @typedef {import('./types').Options} Options
  * @typedef {import('./types').Query} Query

src/types.ts

@@ -18,11 +18,6 @@ export interface Batch {
   delete: (key: Key) => void
   commit: (options?: Options) => Promise<void>
 }
-
-export interface DatastoreFactory extends Datastore {
-  new (): Datastore
-}
-
 export interface Datastore {
   open: () => Promise<void>
   close: () => Promise<void>