Overview

Find an ergonomic way (minimize boilerplate and code duplication) to get typed, zod-validated express routes and an OpenAPI schema at the same time
Minimize code duplication and boilerplate between express routes, request parameter validation, and OpenAPI definitions

Highlights

base Controller class that consolidates creation of express route, zod-validated request parameters, OpenAPI definition, and getting a typed express.RouteHandler: src/zod-openapi-express-routes/zod-api.controller.ts
example controller instance: src/products/products.controller.ts
example request parameter zod schemas: src/products/api-schemas.ts
example manually-defined file upload route using multer for uploads: src/products/products.controller.ts#L148

clone the repository
npm install
npm run dev
open the generated OpenAPI docs http://localhost:3250/api/reference
open the generated swagger.json http://localhost:3250/api/swagger.json
get a single resource http://localhost:3250/api/products/1
an invalid path parameter results in validation errors http://localhost:3250/api/products/abc

@anatine/zod-openapi: generates request parameter OpenAPI definitions from zod schemas
openapi3-ts: used to define OpenAPI schema in TypeScript
swagger-ui-express: serves the OpenAPI documentation
zod: used to define request parameter validation schemas