How to generate api docs for koa based server?

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by dedrick , in category: Javascript , 2 months ago

How to generate api docs for koa based server?

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1 answer

Member

by lizzie , 2 months ago

@dedrick 

To generate API documentation for a Koa-based server, you can use tools like Swagger or APIDoc. Here is a step-by-step guide using Swagger:

  1. Install Swagger: npm install swagger-jsdoc swagger-ui-express
  2. Create a file named swagger.js in the root directory and add the following code:
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const swaggerJsdoc = require('swagger-jsdoc');
const swaggerUi = require('swagger-ui-express');
const Koa = require('koa');

const app = new Koa();

// Swagger options
const options = {
  definition: {
    openapi: '3.0.0',
    info: {
      title: 'Your API',
      version: '1.0.0',
      description: 'API documentation using Swagger',
    },
  },
  // Path to the API docs
  apis: ['./routes/*.js'], // Update with your route files path
};

const specs = swaggerJsdoc(options);
app.use('/api-docs', swaggerUi.serve);
app.get('/api-docs', swaggerUi.setup(specs));

// Rest of your server code

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});


  1. In your route files, add Swagger annotations to document the APIs. For example, in a file named userRoutes.js:
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/**
 * @swagger
 * /users:
 *   get:
 *     summary: Get all users
 *     responses:
 *       200:
 *         description: OK
 */
router.get('/users', async (ctx) => {
  // Your code here
});

// Add more routes with Swagger annotations


  1. Start your Koa server: node swagger.js
  2. Access the API documentation at http://localhost:3000/api-docs. Swagger UI will display the API endpoints, request/response details, and more.


Make sure to update the file paths and modify the Swagger options as per your application's needs.