refactored the app export. Update readme.

README.md

@@ -0,0 +1,40 @@
+# README.md Generator for Node.js Application
+
+## Setting up the Application
+
+To set up this Node.js application, follow the instructions below:
+
+1. **Copy `.env.example` to `.env**
+ Open your terminal and navigate to your project's root directory.
+   
+   ```bash
+   $ cp .env.example .env
+   ```
+
+2. Modify the `.env` file if you wish. The `DB_URL` should already be set
+correctly.
+
+3. Start the postgres database:
+
+    ```shell
+    $ docker-compose up -d
+    ```
+
+4. Install the packages
+
+  ```shell
+  $ npm i
+  ```
+
+5. Run the tests
+
+  ```shell
+  $ npm run test
+  ```
+
+6. Start the Express application.
+
+  ```shell
+  $ npm run serve
+  ```
+

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "serve": "node ./src/index.js",
-    "test": "node --experimental-vm-modules node_modules/.bin/jest"
+    "test": "node --experimental-vm-modules node_modules/.bin/jest --detectOpenHandles --force-exit"
   },
   "type": "module",
   "keywords": [],

src/app.js

@@ -1,6 +1,6 @@
 
 import express from 'express'
-import { db } from './db';
+import db from './db.js';
 
 /*
  * utility function to either get the value in the post data
@@ -15,8 +15,6 @@ function valOrMissing(data, key, res) {
 }
 
 
-export function createApp() {
-
 // Creating an instance of Express
 const app = express();
 app.use(express.json()) // for parsing application/json
@@ -38,5 +36,4 @@ export function createApp() {
     return res.status(200).send({ "note": note[0] });
 });
 
-    return app;
-}
+export default app;

src/app.spec.js

@@ -1,9 +1,6 @@
-import { db } from "./db";
-import { createApp } from "./app";
+import app from "./app";
 import request from "supertest";
 
-const app = createApp();
-
 const note = {
     title: 'Test Note',
     text: 'This is a test note.'

src/db.js

@@ -7,7 +7,7 @@ if (!process.env.DB_URL) {
 };
 
 // Creating an instance of Knex
-export const db = knex({
+export default knex({
     client: 'postgres',
     connection: process.env.DB_URL
 });

src/index.js

@@ -1,13 +1,9 @@
 // Importing express
-import { createApp } from './app';
+
+import app from "./app.js";
 
 (() => {
-    const app = createApp();
-    // Start the Express server
     app.listen(3000, () => {
         console.log('Server started on port 3000');
     });
 })();
-
-// Exporting the app
-export default app;