Middleware for express that uses zod to make requests type-safe.

This package relies on zod, express and @types/express. These have been added as peer dependencies so they can be upgraded independently of this package.

zod-express-middleware can be installed using:

npm install zod-express-middleware

This package provides the validateRequest function, which can be used to validate the .body, .query and .params properties of an Express Request. Separate functions for each of these are also provided (validateRequestBody, validateRequestQuery and validateRequestParams).

Basic example:

import { validateRequest } from 'zod-express-middleware';
import { z } from 'zod';
// app is an express app
app.get("/", validateRequest({
    body: z.object({
      bodyKey: z.number(),
    }),
  }), (req, res) => {
    // req.body is now