set token to expiration with passport jwt. 1

set token to expiration with passport jwt.

ByAnurag batra 
const jwt = require('jsonwebtoken');

// in your login route
router.post('/login', (req, res) => {
  // do whatever you do to handle authentication, then issue the token:

  const token = jwt.sign(req.user, 's00perS3kritCode', { expiresIn: '30m' });
  res.send({ token });
});

Here is what the above code is Doing:
1. We’re importing the jsonwebtoken library.
2. We’re creating a login route that will issue a token.
3. We’re using the jsonwebtoken library to create a token using the user object, a secret string, and an expiration time.
4. We’re sending the token back to the client.

Now, we need to protect our routes.

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