koa-docs

An automatic documentation generator for koa APIs. The goal is to make documentation easy using route specs that may already exist.

• Usage
• API:
  • docs.get()
  • That's it (just one method)
• Specs:
  • Groups
  • Routes
• Links:
  • Github repo
  • Sample output

Demo

See example folder for source code. View example output

Install

> npm install --save koa-docs@2.x.x

Note version 2.x.x of this package uses joi router version ^3 specs; use version 1.x.x of this package if you are using older specs

Usage

const app = require('koa')();
const docs = require('koa-docs');

// Create a path for viewing the docs (only GET method is supported)
app.use(docs.get('/docs', {
   title: 'Pet Store API',
   version: '1.0.0',

   theme: 'simplex',    // Specify a theme from www.bootswatch.com;
                        // default is un-themed bootstrap

   routeHandlers: 'disabled',  // Hide the route implementation code from docs

   groups: [
      { groupName: 'Pets', routes: [/*  ... route specs ...  */] },
      { groupName: 'Store', routes: [/*  ... route specs ...  */] }
   ]
}));

app.listen(3000, (err) => {
   if (err) throw err;
   console.log(`Docs are available at http://localhost:3000/docs`);
});

docs.get(path, options)

Creates a koa middleware which generates and serves api documentation using the specs provided in the options object.

Arguments

1. path (String): the GET path at which the documentation will be served
2. options (Object)
   • title: string representing the page title; displayed at the top of the docs
   • version: string representing api version; also displayed at top of the docs
   • routeHandlers: string indicating whether to show the route handler code in the docs. Options are disabled, expanded or collapsed (collapsed is the default)
   • theme: string name of a theme from bootswatch to be used as the default theme
   • groups: array of group specs as described below

Returns

(GeneratorFunction): Middleware suitable for use in koa.js app

Group specs

Groups are used to logically display the various sections of your api. They are declared as follows:

• groupName: string representing the name of the group
• description: string that describes the group; keep this short at about 1 scentence. This is displayed in both expanded and collapsed states as well as in tooltips. This should be a simple string; no markdown
• extendedDescription: string that supports markdown and is displayed only in when a group is being displayed in an expanded state. Make this as long as you need.
• prefix: optional string to be prefixed to all route paths in this group
• routes: array of route specs representing the routes in this group. See below for details on route specs.

Route specs

The route specs are the same as koa-joi-router, therefore, those routes can be used directly with koa-docs. Specifications are as follows:

• method: required HTTP method like "get", "post", "put", etc
• path: required string
• validate
  • header: object which conforms to Joi validation
  • query: object which conforms to Joi validation
  • params: object which conforms to Joi validation
  • body: object which conforms to Joi validation
  • maxBody: max incoming body size for forms or json input
  • failure: HTTP response code to use when input validation fails. default 400
  • type: if validating the request body, this is required. either form, json or multipart
  • output: output validator object which conforms to Joi validation. if output is invalid, an HTTP 500 is returned
  • continueOnError: if validation fails, this flags determines if koa-joi-router should continue processing the middleware stack or stop and respond with an error immediately. useful when you want your route to handle the error response. default false
• handler: required GeneratorFunction
• meta: meta data about this route. koa-joi-router ignores this but stores it along with all other route data

meta

In addition to the above options, koa-docs looks for the following properties in the meta object of each route:

• friendlyName: string which is used in the sidebar and route title; route path is used if this is not proivded
• description: string that describes the routes; keep this short at about 1 scentence. This is displayed in both expanded and collapsed states as well as in tooltips. This should be a simple string; no markdown
• extendedDescription: string that supports markdown and is displayed only in when a route is being displayed in an expanded state. Make this as long as you need.

Sample routes

• pets example
• store example

Roadmap / Contribution

Please feel free to claim any of the following features for development; more features can be requested by opening an issue.

• Create separate section for models (joi objects that have a label)
• Add popovers for displaying models
• Quick filter (fuzzysearch)
• Ability to save the generated HTML to file
• E2E testing of output

License

MIT