openapi-typescript generates TypeScript types from static OpenAPI schemas quickly using only Node.js. It is fast, lightweight, (almost) dependency-free, and no Java/node-gyp/running OpenAPI servers necessary. The code is [MIT-licensed](./LICENSE) and free for use. ## Features - ✅ Supports OpenAPI 3.0 and 3.1 (including advanced features like discriminators) - ✅ Generate **runtime-free types** that outperform old-school codegen - ✅ Load schemas from YAML or JSON, locally or remotely - ✅ Native Node.js code is fast and generates types within milliseconds ## Examples 👀 [See examples](./examples/) ## Setup This library requires the latest version of Node.js installed (20.x or higher recommended). With that present, run the following in your project: ```bash npm i -D openapi-typescript ``` > ✨ **Tip** > > Enabling [noUncheckedIndexedAccess](https://www.typescriptlang.org/tsconfig#noUncheckedIndexedAccess) in `tsconfig.json` can go along way to improve type safety ([read more](/docs/src/content/docs/advanced.md#enable-nouncheckedindexedaccess-in-your-tsconfigjson)) ## Basic usage First, generate a local type file by running `npx openapi-typescript`: ```bash # Local schema npx openapi-typescript ./path/to/my/schema.yaml -o ./path/to/my/schema.d.ts # 🚀 ./path/to/my/schema.yaml -> ./path/to/my/schema.d.ts [7ms] ``` ```bash # Remote schema npx openapi-typescript https://myapi.dev/api/v1/openapi.yaml -o ./path/to/my/schema.d.ts # 🚀 https://myapi.dev/api/v1/openapi.yaml -> ./path/to/my/schema.d.ts [250ms] ``` > ⚠️ Be sure to validate your schemas! openapi-typescript will err on invalid schemas. Then, import schemas from the generated file like so: ```ts import { paths, components } from "./path/to/my/schema"; // <- generated by openapi-typescript // Schema Obj type MyType = components["schemas"]["MyType"]; // Path params type EndpointParams = paths["/my/endpoint"]["parameters"]; // Response obj type SuccessResponse = paths["/my/endpoint"]["get"]["responses"][200]["content"]["application/json"]["schema"]; type ErrorResponse = paths["/my/endpoint"]["get"]["responses"][500]["content"]["application/json"]["schema"]; ``` #### 🦠 Globbing local schemas ```bash npx openapi-typescript "specs/**/*.yaml" --output schemas/ # 🚀 specs/one.yaml -> schemas/specs/one.ts [7ms] # 🚀 specs/two.yaml -> schemas/specs/two.ts [7ms] # 🚀 specs/three.yaml -> schemas/specs/three.ts [7ms] ``` _Thanks, [@sharmarajdaksh](https://github.com/sharmarajdaksh)!_ #### ☁️ Remote schemas ```bash npx openapi-typescript https://petstore3.swagger.io/api/v3/openapi.yaml --output petstore.d.ts # 🚀 https://petstore3.swagger.io/api/v3/openapi.yaml -> petstore.d.ts [250ms] ``` _Thanks, [@psmyrdek](https://github.com/psmyrdek)!_ ## 📓 Docs [View Docs](https://openapi-ts.pages.dev/)

	Stars	Issues	Version	Updated	Created
openapi-typescript	4,540	83	6.7.5	a month ago	4 years ago
swagger-codegen	2	145	0.1.1	8 years ago	8 years ago
swagger-typescript-codegen	140	21	3.2.4	3 years ago	7 years ago

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