create skeleton SlopStore class for operations on the slop object store

src/indexed-db.ts

@@ -1,39 +1,5 @@
 import { openDB, IDBPDatabase, unwrap } from "idb/index.js"
 
-export class IDBCursorValueIterator {
-    cursor: IDBCursorWithValue
-
-    constructor(cursor: IDBCursorWithValue) {
-        this.cursor = cursor
-    }
-
-    next(): IteratorResult<any> {
-        const key = this.cursor.key
-        const value = this.cursor.value
-        let done = false
-
-        try {
-            this.cursor.continue()
-        }
-        catch (error) {
-            if (error.name === "InvalidStateError") {
-                done = true
-            }
-            else {
-                throw error
-            }
-        }
-        finally {
-            return { value: {key: key, value: value}, done: done }
-        }
-    }
-
-    [Symbol.iterator]() {
-        return this
-    }
-
-}
-
 export class CheckCache {
     slopdb: IDBPDatabase
     cache_capacity: number
@@ -82,13 +48,22 @@ export class CheckCache {
     }
 }
 
+export class SlopStore {
+    slopdb: IDBPDatabase
+    static slop_objectstore_name = "slop"
+
+    constructor(slopdb: IDBPDatabase) {
+        this.slopdb = slopdb
+    }
+}
+
 export class SlopDB {
     version: number
     open_promise: Promise<any>
     db: IDBPDatabase
 
-    // slop_store: SlopStore
     check_cache: CheckCache
+    slop_store: SlopStore
 
     static apply_db_upgrade(db: IDBPDatabase, idb_version: number) {
         switch (idb_version) {
@@ -121,6 +96,9 @@ export class SlopDB {
             this.db = db
             // create a CheckCache object to handle the check_cache object store
             this.check_cache = new CheckCache(this.db, 512)
+
+            // create a SlopStore object to handle the slop object store
+            this.slop_store = new SlopStore(this.db)
         })
     }