What is body-parser?

Often, when I see a blog post or article describing an Express.js server, it usually starts out with something similar to the following:

npm init 
-y
npm i express body-parser

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Followed by the classic

const
 
express
 
=
 
require
(
'
express
'
);
const
 
bodyParser
 
=
 
require
(
'
body-parser
'
);

const
 
app
 
=
 
express
();
app
.
use
(
bodyParser
.
json
());
// more express stuff

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I used to have these four lines of code in practically every Express app I’ve ever made!

However, a few weeks ago I was poring over the Express Docs and noticed that as of version 4.16.0 (which came out three years ago!), Express basically comes with body-parser out of the box!

How do I use the Express version?

Well, you can pretty much just search bodyParser, and replace it with express!

This means our four lines of code above can be refactored into the following three lines of code:

const
 
express
 
=
 
require
(
'
express
'
);

const
 
app
 
=
 
express
();
app
.
use
(
express
.
json
());

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If you are using Babel (which I would highly recommend!), you can even use a named import to make the code even more concise:

import
 
express
,
 
{
 
json
 
}
 
from
 
'
express
'
;

const
 
app
 
=
 
express
();
app
.
use
(
json
());

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