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micro-jwt-auth

★ 94 Open GitHub ↗

jwt authorization wrapper for https://github.com/zeit/micro

// repository documentation

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# micro-jwt-auth
[json web token(jwt)](https://jwt.io/introduction/) authorization wrapper for [Micro](https://github.com/zeit/micro)

> An `Authorization` header with value `Bearer MY_TOKEN_HERE` is expected

## examples

#### with no other wrappers
```javascript
'use strict'

const jwtAuth = require('micro-jwt-auth')

/*
    if Authorization Bearer is not present or not valid, return 401
*/

module.exports = jwtAuth('my_jwt_secret')(async(req, res) => {
  return `Ciaone ${req.jwt.username}!`
})
```

#### with multiple wrappers

```javascript
'use strict'

const jwtAuth = require('micro-jwt-auth')

const compose = (...fns) => fns.reduce((f, g) => (...args) => f(g(...args)))

const handle = async(req, res) => {
  return `Ciaone ${req.jwt.username}!`
}

module.exports = compose(
    jwtAuth(process.env.jwt_secret),
    anotherWrapper,
    analitycsWrapper,
    redirectWrapper,
    yetAnotherWrapper
)(handle)
```

#### with whitelist of paths
Whitelisted paths make JWT token *optional*. However if valid token is provided it will be  decoded.

```javascript
'use strict'

const jwtAuth = require('micro-jwt-auth')

/*
    Bypass authentication for login route
*/

module.exports = jwtAuth('my_jwt_secret', [ 'api/login' ])(async(req, res) => {
  return `Ciaone ${req.jwt.username}!`
})
```

#### with custom responses

```javascript
'use strict'

const jwtAuth = require('micro-jwt-auth')

/*
    You can overwrite the default response with the optional config object
*/

module.exports = jwtAuth('my_jwt_secret', ['api/login'], {
  resAuthInvalid: 'Error: Invalid authentication token',
  resAuthMissing: 'Error: Missing authentication token'
})(async(req, res) => {
  return `Ciaone ${req.jwt.username}!`
})

/*
  You may skip the whitelist if unnecessary
*/

module.exports = jwtAuth('my_jwt_secret', {
  resAuthInvalid: 'Error: Invalid authentication token',
  resAuthMissing: 'Error: Missing authentication token'
})(async(req, res) => {
  return `Ciaone ${req.jwt.username}!`
})
```

micro-jwt-auth

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