This is `canary` version of documentation. It's still under construction and review.
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Functions

Middleware functions standardization, explanation and usage

NEMO uses Next.js native middleware function schema to provide you with a familiar way of writing middleware functions and enabling you to use 3rd party packages without any issues.

Function schema

NEMO middleware function API is fully compatible with Next.js native API. It's just extending the event prop with some additional props and functions.

_middleware.ts
import {  } from "@rescale/nemo";
 
const :  = async (, ) => {
  // function body
};

Info

You can check detailed types by hovering on function parts and props.

Explanation

Prop:  request

Type: NextRequest

That's a user middleware's request passed to middleware and can be later updated by functions in chain.

This props cookies will only deffer from the original user's request if you've forwarded any response it in the chain.

Prop:  event

Type: NemoEvent extends NextFetchEvent

This property contains event object for serverless functions execution extended via nemo prop which contains chain execution shared context.

Shared context

Learn more about Shared Context in middleware

On this page