# swagger-parser
> Swagger 2.0 and OpenAPI 3.0 parser and validator for Node and browsers
Latest version **10.0.3** (published 2021-08-15) · MIT license · 0 weekly downloads
## Install
```sh
npm install swagger-parser
pnpm add swagger-parser
yarn add swagger-parser
bun add swagger-parser
```
## Health
**Score 35/100 (D)** — status: abandoned.
Positive: has types; no vulnerabilities; high maintenance score.
Warnings: low downloads; no esm support.
Negative: abandoned.
## Facts
| | |
|---|---|
| Version | 10.0.3 |
| Published | 2021-08-15 |
| First published | 2014-10-20 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | >=10 |
| Dependencies | 1 |
| Unpacked size | 21.4 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 1207 |
| Author | James Messinger |
| Maintainers | bigstickcarpet, rkrauskopf, jamesmessinger |
| Keywords | swagger, openapi, open-api, json, yaml, parse, parser, validate, validator, validation, spec, specification, schema, reference, dereference |
## Links
- npm: https://www.npmjs.com/package/swagger-parser
- Repository: https://github.com/APIDevTools/swagger-parser
- Homepage: https://apitools.dev/swagger-parser/
- Issues: https://github.com/APIDevTools/swagger-parser/issues
- npm.io page: https://npm.io/package/swagger-parser
## Dependencies (1)
- [@apidevtools/swagger-parser](https://npm.io/package/@apidevtools/swagger-parser.md) 10.0.3
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## Recent versions
- 10.0.3 (latest) — 2021-08-15
- 4.0.0-beta.2 (beta) — 2016-04-25
- 3.0.0-alpha.5 (alpha) — 2015-07-21
- 10.0.2 — 2020-09-07
- 10.0.1 — 2020-07-19
- 10.0.0 — 2020-07-10
- 9.0.1 — 2020-03-15
- 9.0.0 — 2020-03-14
- 8.0.4 — 2019-12-31
- 8.0.3 — 2019-10-24
- 8.0.2 — 2019-10-11
- 8.0.1 — 2019-08-24
- 8.0.0 — 2019-06-22
- 7.0.1 — 2019-06-21
- 7.0.0 — 2019-06-12
- … 66 more at https://npm.io/package/swagger-parser/versions
## README
Swagger 2.0 and OpenAPI 3.0 parser/validator
============================
[](https://github.com/APIDevTools/swagger-parser/actions)
[](https://coveralls.io/github/APIDevTools/swagger-parser)
[](https://apis.guru/browse-apis/)
[](https://www.npmjs.com/package/@apidevtools/swagger-parser)
[](https://david-dm.org/APIDevTools/swagger-parser)
[](LICENSE)
[](https://plant.treeware.earth/APIDevTools/swagger-parser)
[](https://github.com/APIDevTools/swagger-parser/actions)
[](https://apitools.dev/swagger-parser/online/)
Features
--------------------------
- Parses Swagger specs in **JSON** or **YAML** format
- Validates against the [Swagger 2.0 schema](https://github.com/OAI/OpenAPI-Specification/blob/master/schemas/v2.0/schema.json) or [OpenAPI 3.0 Schema](https://github.com/OAI/OpenAPI-Specification/blob/master/schemas/v3.0/schema.json)
- [Resolves](https://apitools.dev/swagger-parser/docs/swagger-parser.html#resolveapi-options-callback) all `$ref` pointers, including external files and URLs
- Can [bundle](https://apitools.dev/swagger-parser/docs/swagger-parser.html#bundleapi-options-callback) all your Swagger files into a single file that only has _internal_ `$ref` pointers
- Can [dereference](https://apitools.dev/swagger-parser/docs/swagger-parser.html#dereferenceapi-options-callback) all `$ref` pointers, giving you a normal JavaScript object that's easy to work with
- **[Tested](https://github.com/APIDevTools/swagger-parser/actions)** in Node.js and all modern web browsers on Mac, Windows, and Linux
- Tested on **[over 1,500 real-world APIs](https://apis.guru/browse-apis/)** from Google, Microsoft, Facebook, Spotify, etc.
- Supports [circular references](https://apitools.dev/swagger-parser/docs/#circular-refs), nested references, back-references, and cross-references
- Maintains object reference equality — `$ref` pointers to the same value always resolve to the same object instance
Related Projects
--------------------------
- [Swagger CLI](https://github.com/APIDevTools/swagger-cli)
- [Swagger Express Middleware](https://github.com/APIDevTools/swagger-express-middleware)
Example
--------------------------
```javascript
SwaggerParser.validate(myAPI, (err, api) => {
if (err) {
console.error(err);
}
else {
console.log("API name: %s, Version: %s", api.info.title, api.info.version);
}
});
```
Or use `async`/`await` or [Promise](http://javascriptplayground.com/blog/2015/02/promises/) syntax instead. The following example is the same as above:
```javascript
try {
let api = await SwaggerParser.validate(myAPI);
console.log("API name: %s, Version: %s", api.info.title, api.info.version);
}
catch(err) {
console.error(err);
}
```
For more detailed examples, please see the [API Documentation](https://apitools.dev/swagger-parser/docs/)
Installation
--------------------------
Install using [npm](https://docs.npmjs.com/about-npm/):
```bash
npm install @apidevtools/swagger-parser
```
Usage
--------------------------
When using Swagger Parser in Node.js apps, you'll probably want to use **CommonJS** syntax:
```javascript
const SwaggerParser = require("@apidevtools/swagger-parser");
```
When using a transpiler such as [Babel](https://babeljs.io/) or [TypeScript](https://www.typescriptlang.org/), or a bundler such as [Webpack](https://webpack.js.org/) or [Rollup](https://rollupjs.org/), you can use **ECMAScript modules** syntax instead:
```javascript
import SwaggerParser from "@apidevtools/swagger-parser";
```
Browser support
--------------------------
Swagger Parser supports recent versions of every major web browser. Older browsers may require [Babel](https://babeljs.io/) and/or [polyfills](https://babeljs.io/docs/en/next/babel-polyfill).
To use Swagger Parser in a browser, you'll need to use a bundling tool such as [Webpack](https://webpack.js.org/), [Rollup](https://rollupjs.org/), [Parcel](https://parceljs.org/), or [Browserify](http://browserify.org/). Some bundlers may require a bit of configuration, such as setting `browser: true` in [rollup-plugin-resolve](https://github.com/rollup/rollup-plugin-node-resolve).
API Documentation
--------------------------
Full API documentation is available [right here](https://apitools.dev/swagger-parser/docs/)
Contributing
--------------------------
I welcome any contributions, enhancements, and bug-fixes. [Open an issue](https://github.com/APIDevTools/swagger-parser/issues) on GitHub and [submit a pull request](https://github.com/APIDevTools/swagger-parser/pulls).
#### Building/Testing
To build/test the project locally on your computer:
1. __Clone this repo__
`git clone https://github.com/APIDevTools/swagger-parser.git`
2. __Install dependencies__
`npm install`
3. __Run the build script__
`npm run build`
4. __Run the tests__
`npm test`
License
--------------------------
Swagger Parser is 100% free and open-source, under the [MIT license](LICENSE). Use it however you want.
This package is [Treeware](http://treeware.earth). If you use it in production, then we ask that you [**buy the world a tree**](https://plant.treeware.earth/APIDevTools/swagger-parser) to thank us for our work. By contributing to the Treeware forest you’ll be creating employment for local families and restoring wildlife habitats.
Big Thanks To
--------------------------
Thanks to these awesome companies for their support of Open Source developers ❤
[](https://github.com/open-source)
[](https://www.npmjs.com/)
[](https://coveralls.io)
[](https://saucelabs.com)
---
_Source: https://npm.io/package/swagger-parser · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._