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Here's the source code if you want to dive directly into the code.
A quick note: You will be building this API with Node.js and Express. Make sure that Node.js is installed on your machine. If not, go ahead and download it from the official website.
After importing the mongoose module, use the [mongoose.connect()](https://mongoosejs.com/docs/api/mongoose.html#mongoose_Mongoose-connect) function to connect to the database. The first argument is the connection string, and the second argument is an object that contains the options, which are used to configure the connection. The above code logs the message, MongoDB connection is established successfully! 🎉, once the connection is successful.
Before creating the endpoint, let's make some helper functions to help us sign JWT tokens. JSON Web Tokens are used to exchange data between clients and servers in a secure manner. We will store the users’ information inside the browser's cookie storage as a JWT token for security reasons. JWTs contain user information encrypted and signed with a secret key. For more information about JWTs, you can read this article.
A quick note: You will be building this API with Node.js and Express. Make sure that Node.js is installed on your machine. If not, go ahead and download it from the official website.
You must have a basic understanding of JavaScript and be familiar with some of the features of ES6, the most recent version of JavaScript, to follow this tutorial. More information is available here if you’re unfamiliar with ES6. If you are more familiar with the older version of JavaScript, you might find the babel REPL more helpful to see how ES6 code is translated.