express throws error as `body-parser deprecated undefined extended`

Question

You have to explicitly set extended for bodyParser.urlencoded() since the default value is going to change in the next major version of body-parser. Example:

app.use(bodyParser.urlencoded({ extended: true }));

Since express 4.16.0, you can also do:

app.use(express.urlencoded({ extended: true }))

Attention: With express version => 4.16.0 the body-parser middleware was added back under the methods express.urlencoded() and express.json()

Which can be used as:

app.use(express.urlencoded({extended: true})); 
app.use(express.json());   

The error says you need to provide the extended option for the body-parser like so:

app.use(bodyParser.urlencoded({ extended: false }))

If you facing 'bodyParser' is deprecated.

Just do

app.use(express.urlencoded({extended: true})); 
app.use(express.json());

Note: If you are using 4.16.0 or later express version.