OpenAPI Typescript Codegen
Node.js library that generates Typescript clients based on the OpenAPI specification.
Why?
- Frontend ❤️ OpenAPI, but we do not want to use JAVA codegen in our builds
- Quick, lightweight, robust and framework-agnostic 🚀
- Supports generation of TypeScript clients
- Supports generations of Fetch, Node-Fetch, Axios, Angular and XHR http clients
- Supports OpenAPI specification v2.0 and v3.0
- Supports JSON and YAML files for input
- Supports generation through CLI, Node.js and NPX
- Supports tsc and @babel/plugin-transform-typescript
- Supports aborting of requests (cancelable promise pattern)
- Supports external references using json-schema-ref-parser
Install
npm install openapi-typescript-codegen --save-dev
Usage
$ openapi --help
Usage: openapi [options]
Options:
-V, --version output the version number
-i, --input <value> OpenAPI specification, can be a path, url or string content (required)
-o, --output <value> Output directory (required)
-c, --client <value> HTTP client to generate [fetch, xhr, node, axios, angular] (default: "fetch")
--name <value> Custom client class name
--useOptions Use options instead of arguments
--useUnionTypes Use union types instead of enums
--exportCore <value> Write core files to disk (default: true)
--exportServices <value> Write services to disk (default: true)
--exportModels <value> Write models to disk (default: true)
--exportSchemas <value> Write schemas to disk (default: false)
--indent <value> Indentation options [4, 2, tab] (default: "4")
--postfixServices Service name postfix (default: "Service")
--postfixModels Model name postfix
--request <value> Path to custom request file
--transformCase <value> Transforms field names to specified case [camel, snake] (default: none)
-h, --help display help for command
Examples
$ openapi --input ./spec.json --output ./generated
$ openapi --input ./spec.json --output ./generated --client xhr
Docker usage
To build the Docker container, execute the following command:
docker build . --tag openapi-typescript-codegen
After this is done, you can execute the CLI commands:
docker run openapi-typescript-codegen --help
docker run openapi-typescript-codegen --input sample.yaml --output client
Documentation
- Basic usage
- OpenAPI object
-
Client instances
--name -
Argument vs. Object style
--useOptions -
Enums vs. Union types
--useUnionTypes -
Runtime schemas
--exportSchemas - Enum with custom names and descriptions
- Nullable props (OpenAPI v2)
- Authorization
- External references
- Canceling requests
- Custom request file