app/controllers/api-controller.js

/**
 * @module api-controller
 *
 * @description Handles only redirecting to API documentation.
 */

/**
 * @typedef ExpressRequest
 * @type { object }
 * @see {@link http://expressjs.com/en/4x/api.html#req|Express Request object documentation}
 */

/**
 * @typedef ExpressResponse
 * @type { object }
 * @see {@link http://expressjs.com/en/4x/api.html#res|Express Response object documentation}
 */

const express = require( 'express' );
const router = express.Router();

module.exports = app => {
    app.use( `${app.get( 'base path' )}/api`, router );
};

router
    .get( '/', ( req, res ) => {
        res.redirect( 'http://apidocs.enketo.org' );
    } );