tests for pre-existing content retrieval

src/js/state/Node.test.ts

@@ -74,6 +74,15 @@ describe('Node', () => {
       const result = await node.once(undefined, true);
       expect(result).toBe(undefined);
     });
+
+    it('should return if the data was pre-existing in an adapter', async () => {
+      const adapter = new MemoryAdapter();
+      const node = new Node({ id: 'user', adapters: [adapter] });
+      await node.put({ name: 'Snowden', age: 30 });
+      const node2 = new Node({ id: 'user', adapters: [adapter] });
+      const result = await node2.once();
+      expect(result).toEqual({ name: 'Snowden', age: 30 });
+    });
   });
 
   describe('node.map()', () => {
@@ -143,6 +152,21 @@ describe('Node', () => {
 
       unsubscribe();
     });
+
+    it('should return if the data was pre-existing in an adapter', async () => {
+      const adapter = new MemoryAdapter();
+      const node = new Node({ id: 'user', adapters: [adapter] });
+      await node.put({ name: 'Snowden', age: 30 });
+      const node2 = new Node({ id: 'user', adapters: [adapter] });
+      const fn = vi.fn();
+      node2.map(fn);
+      expect(fn).toHaveBeenCalledWith(
+        'Snowden',
+        'user/name',
+        expect.any(Number),
+        expect.any(Function),
+      );
+    });
   });
 
   describe('Branch node behavior', () => {

src/js/state/types.ts

@@ -12,5 +12,5 @@ export type Callback = (
 export abstract class Adapter {
   abstract get(path: string, callback: Callback): Unsubscribe;
   abstract set(path: string, data: NodeValue): Promise<void>;
-  // abstract list(path: string, callback: Callback): Unsubscribe; ?
+  //abstract list(path: string, callback: Callback): Unsubscribe;
 }

src/js/state/useLocalState.ts

@@ -5,7 +5,6 @@ import localState from '@/state/LocalState.ts';
 export default function useLocalState(key: string, initialValue: any = undefined, once = false) {
   if (!initialValue) {
     localState.get(key).once((val) => {
-      // TODO some way to get memory value
       initialValue = val;
     });
   }