Swagger 2.0 and OpenAPI 3.x parser/validator

Features

Parses Swagger specs in JSON or YAML format
Validates against the Swagger 2.0 schema, OpenAPI 3.0 Schema, or OpenAPI 3.1 Schema
Resolves all $ref pointers, including external files and URLs
Can bundle all your Swagger files into a single file that only has internal $ref pointers
Can dereference all $ref pointers, giving you a normal JavaScript object that's easy to work with
Tested in Node.js and all modern web browsers on Mac, Windows, and Linux
Tested on over 1,500 real-world APIs from Google, Microsoft, Facebook, Spotify, etc.
Supports circular references, nested references, back-references, and cross-references
Maintains object reference equality — $ref pointers to the same value always resolve to the same object instance

Example

OpenAPIParser.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 syntax instead. The following example is the same as above:

try {
  let api = await OpenAPIParser.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

Installation

Install using npm:

npm install @readme/openapi-parser

Usage

When using Swagger Parser in Node.js apps, you'll probably want to use CommonJS syntax:

const OpenAPIParser = require("@readme/openapi-parser");

When using a transpiler such as Babel or TypeScript, or a bundler such as Webpack or Rollup, you can use ECMAScript modules syntax instead:

import OpenAPIParser from "@readme/openapi-parser";

Differences from `@apidevtools/swagger-parser`

@apidevtools/swagger-parser returns schema validation errors as the raw error stack from Ajv. For example:

To reduce the amount of potentially unnecessary noise that these JSON pointer errors provide, @readme/openapi-parser utilizes better-ajv-errors, along with some intelligent reduction logic, to only surface the errors that actually matter.

Additionally with these error reporting differences, this library ships with a validation.colorizeErrors option that will disable colorization within these prettified errors.

Browser support

Swagger Parser supports recent versions of every major web browser. Older browsers may require Babel and/or polyfills.

To use Swagger Parser in a browser, you'll need to use a bundling tool such as Webpack, Rollup, Parcel, or Browserify. Some bundlers may require a bit of configuration, such as setting browser: true in rollup-plugin-resolve.

API Documentation

Full API documentation is available right here

License

petkostas/openapi-parser

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