Reformat example

Author: simolus3

demos/example-node/README.md

@@ -0,0 +1,8 @@
+## NodeJS Demo
+
+This demonstrates a small NodeJS client opening a database and connecting PowerSync.
+
+To get started, set up a PowerSync service instance with the default rules for the todolist examples.
+Create a development token, and use it to implement `DemoConnector.fetchCredentials` in `main.ts`.
+
+Then, use `pnpm run run` to open a database, connect to PowerSync, wait for a first sync, and run a simple query.

demos/example-node/src/main.ts

@@ -1,15 +1,47 @@
-import { column, PowerSyncDatabase, Schema, Table } from "@powersync/node";
+import {
+  AbstractPowerSyncDatabase,
+  column,
+  PowerSyncBackendConnector,
+  PowerSyncDatabase,
+  Schema,
+  Table
+} from '@powersync/node';
+import Logger from 'js-logger';
 
 const main = async () => {
-    const db = new PowerSyncDatabase({
-        schema: AppSchema,
-        database: {
-            dbFilename: 'test.db',
-        },
-    });
-    console.log(await db.get('SELECT powersync_rs_version();'));
+  const db = new PowerSyncDatabase({
+    schema: AppSchema,
+    database: {
+      dbFilename: 'test.db'
+    },
+    logger: Logger
+  });
+  console.log(await db.get('SELECT powersync_rs_version();'));
+  db.registerListener({
+    statusChanged: (status) => {
+      console.log('Sync status', status);
+    }
+  });
+
+  await db.connect(new DemoConnector());
+
+  await db.waitForFirstSync();
+  console.log(await db.getAll('SELECT * FROM lists;'));
 };
 
+class DemoConnector implements PowerSyncBackendConnector {
+  async fetchCredentials() {
+    return {
+      endpoint: '', // todo
+      token: '' // todo
+    };
+  }
+
+  async uploadData(database: AbstractPowerSyncDatabase) {
+    throw 'not implemented: DemoConnector.uploadData';
+  }
+}
+
 export const LIST_TABLE = 'lists';
 export const TODO_TABLE = 'todos';