Setting up the Express middleware

To set up the express.json() middleware, we take the following steps below:

Step 1: Install the express framework

To add express to the dependency object in our Node application, we run the command below at the root of the project:

npm install express

Step 2: Import and inject the express.json() middleware

To set up the express.json() middleware, we will need to require express in the server.js file as seen below:

const express = require('express')
const app = express()

With express imported, we can now inject the express.json() middleware:

app.use(express.json());

📝 Note: The express.json()is only available in Express v4.16.0 and above.

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