@fastify/accept-negotiator


A negotiator for accept-* headers.

$3

``
npm i @fastify/accept-negotiator
`

$3

The module exports a function that you can use for negotiating an accept-* header such as accept-encoding. It takes 2 parameters:

`
negotiate(header, supportedValues)
`

- header (string, required) - The accept-header, e.g. accept-encoding
- supportedValues (string[], required) - The values, which are supported

`js
const negotiate = require('@fastify/accept-negotiator').negotiate
const encoding = negotiate('gzip, deflate, br', ['br'])
console.log(encoding) // 'br*
`

The module also exports a class that you can use for negotiating an accept-* header, and use caching for better performance.


`
Negotiate(supportedValues)
`

- supportedValues (string[], required) - The values, which are supported
- cache ({ set: Function; get: Function; has: Function }, optional) - A Cache-Store, e.g. ES6-Map or mnemonist LRUCache

`js
const Negotiator = require('@fastify/accept-negotiator').Negotiator
const encodingNegotiator = new Negotiator({ supportedValues: ['br'], cache: new Map() })

const encoding = encodingNegotiator.negotiate('gzip, deflate, br')
console.log(encoding) // 'br*
``

License

Licensed under MIT.