express-jsdoc-swagger

With this library, you can document your express endpoints using swagger OpenAPI 3 Specification without writing YAML or JSON. You can write jsdoc comments on each endpoint, and the library is going to create the swagger UI.

Prerequisites

This library assumes you are using:

1. NodeJS
2. Express.js

Installation

npm i express-jsdoc-swagger

Usage

const express = require('express');
const expressJSDocSwagger = require('express-jsdoc-swagger');

const options = {
  info: {
    version: '1.0.0',
    title: 'Albums store',
    license: {
      name: 'MIT',
    },
  },
  security: {
    BasicAuth: {
      type: 'http',
      scheme: 'basic',
    },
  },
  filesPattern: './**/*.js', // Glob pattern to find your jsdoc files (it supports arrays too ['./**/*.controller.js', './**/*.route.js'])
  swaggerUIPath: '/your-url', // SwaggerUI will be render in this url. Default: '/api-docs'
  baseDir: __dirname,
  exposeSwaggerUI: true, // Expose OpenAPI UI. Default true
  exposeApiDocs: false, // Expose Open API JSON Docs documentation in `apiDocsPath` path. Default false.
  apiDocsPath: '/v3/api-docs', // Open API JSON Docs endpoint. Default value '/v3/api-docs'.
};

const app = express();
const PORT = 3000;

expressJSDocSwagger(app)(options);

/**
 * GET /api/v1
 * @summary This is the summary or description of the endpoint
 * @return {object} 200 - success response
 */
app.get('/api/v1', (req, res) => res.json({
  success: true,
}));

app.listen(PORT, () => console.log(`Example app listening at http://localhost:${PORT}`));

Examples

1. Basic configuration

const options = {
  info: {
    version: '1.0.0',
    title: 'Albums store',
    license: {
      name: 'MIT',
    },
  },
  security: {
    BasicAuth: {
      type: 'http',
      scheme: 'basic',
    },
  },
  filesPattern: './**/*.js', // Glob pattern to find your jsdoc files
  baseDir: __dirname,
};

2. Components definition

/**
 * A song type
 * @typedef {object} Song
 * @property {string} title.required - The title
 * @property {string} artist - The artist
 * @property {number} year - The year - double
 */

3. Endpoint that returns a Songs model array

/**
 * GET /api/v1/albums
 * @summary This is the summary or description of the endpoint
 * @tags album
 * @return {array<Song>} 200 - success response - application/json
 */
app.get('/api/v1/albums', (req, res) => (
  res.json([{
    title: 'abum 1',
  }])
));

4. Basic endpoint definition with tags, params and basic authentication

/**
 * GET /api/v1/album
 * @summary This is the summary or description of the endpoint
 * @security BasicAuth
 * @tags album
 * @param {string} name.query.required - name param description
 * @return {object} 200 - success response - application/json
 * @return {object} 400 - Bad request response
 */
app.get('/api/v1/album', (req, res) => (
  res.json({
    title: 'abum 1',
  })
));

5. Basic endpoint definition with code example for response body

/**
 * GET /api/v1/albums
 * @summary This is the summary or description of the endpoint
 * @tags album
 * @return {array<Song>} 200 - success response - application/json
 * @example response - 200 - success response example
 * [
 *   {
 *     "title": "Bury the light",
 *     "artist": "Casey Edwards ft. Victor Borba",
 *     "year": 2020
 *   }
 * ]
 */
app.get('/api/v1/albums', (req, res) => (
  res.json([{
    title: 'track 1',
  }])
));

You can find more examples here, or visit our documentation.

Contributors ✨

This project follows the all-contributors specification. Contributions of any kind welcome!