Menu Close

express-openapi-validator

๐Ÿฆ‹ express-openapi-validator

All Contributors Coverage Status Codacy Badge Gitpod Ready-to-Code

An OpenApi validator for ExpressJS that automatically validates API requests and responses using an OpenAPI 3 specification.

๐Ÿฆ‹express-openapi-validator is an unopinionated library that integrates with new and existing API applications. express-openapi-validator lets you write code the way you want; it does not impose any coding convention or project layout. Simply, install the validator onto your express app, point it to your OpenAPI 3 specification, then define and implement routes the way you prefer. See an example.

Features:

  • โœ”๏ธ request validation
  • โœ”๏ธ response validation (json only)
  • ๐Ÿ‘ฎ security validation / custom security functions
  • ๐Ÿ‘ฝ 3rd party / custom formats / custom data serialization-deserialization
  • ๐Ÿงต optionally auto-map OpenAPI endpoints to Express handler functions
  • โœ‚๏ธ $ref support; split specs over multiple files
  • ๐ŸŽˆ file upload

Docs:

GitHub stars Twitter URL

NestJS
Koa and Fastify now available! ๐Ÿš€

Install

npm install express-openapi-validator

## latest beta
npm install express-openapi-validator@4.14.0-beta.1

Usage

  1. Require/import the openapi validator
const OpenApiValidator = require('express-openapi-validator');

or

import * as OpenApiValidator from 'express-openapi-validator';
  1. Install the middleware

app.use(
  OpenApiValidator.middleware({
    apiSpec: './openapi.yaml',
    validateRequests: true, // (default)
    validateResponses: true, // false by default
  }),
);
  1. Register an error handler
app.use((err, req, res, next) => { // format error res.status(err.status || 500).json({ message: err.message, errors: err.errors, }); });

Important: Ensure express is configured with all relevant body parsers. Body parser middleware functions must be specified prior to any validated routes. See an example.

Documentation

See the wiki for complete documenation

License

MIT

Buy Me A Coffee

View Source Code
Posted in Development