How to use the fastify-decorators.GET function in fastify-decorators

/**
 * @license
 * Copyright Andrey Chalkin  (https://github.com/L2jLiga). All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/L2jLiga/fastify-decorators/blob/master/LICENSE
 */

import { GET, RequestHandler } from 'fastify-decorators';

@GET('/get')
class GetHandler extends RequestHandler {
    async handle() {
        return { message: 'OK!' };
    }
}

export = GetHandler;

* Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/L2jLiga/fastify-decorators/blob/master/LICENSE
 */

import { FastifyReply, FastifyRequest } from 'fastify';
import { AbstractController, Controller, ControllerType, GET, Hook } from 'fastify-decorators';
import { IncomingMessage, ServerResponse } from 'http';

@Controller({
    route: '/request',
    type: ControllerType.REQUEST
})
class RequestController extends AbstractController {
    private callsCount = 0;

    @GET('/index')
    async indexHandler() {
        this.instance.log.info('Handled request to /request/index');

        this.callsCount++;
        return 'Request controller: index handler, calls count: ' + this.callsCount;
    }

    @Hook('onSend')
    async hidePoweredBy(request: FastifyRequest, reply: FastifyReply) {
        reply.header('X-Powered-By', 'nodejs');
    }
}

export = RequestController;

* @license
 * Copyright Andrey Chalkin  (https://github.com/L2jLiga). All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/L2jLiga/fastify-decorators/blob/master/LICENSE
 */

import { FastifyReply, FastifyRequest } from 'fastify';
import { IncomingMessage, ServerResponse } from 'http';
import { Controller, GET, Hook } from 'fastify-decorators';

@Controller('/ctrl')
export default class SingletonController {
    private callsCount = 0;

    @GET('/index')
    async index() {
        this.callsCount++;

        return 'Singleton controller: index handler, calls count: ' + this.callsCount;
    }

    @Hook('onSend')
    async hidePoweredBy(request: FastifyRequest, reply: FastifyReply) {
        reply.header('X-Powered-By', 'nodejs');
    }
}

/**
 * @license
 * Copyright Andrey Chalkin  (https://github.com/L2jLiga). All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/L2jLiga/fastify-decorators/blob/master/LICENSE
 */

import { FastifyReply, FastifyRequest } from 'fastify';
import { Controller, GET, Hook } from 'fastify-decorators';
import { IncomingMessage, ServerResponse } from 'http';

@Controller('/demo')
export default class SimpleController {
    @GET({
        url: '/test',
        options: {
            schema: {
                response: {
                    200: {
                        properties: {
                            message: {type: 'string'}
                        }
                    }
                }
            }
        }
    })
    async test(request: FastifyRequest, reply: FastifyReply) {
        return {message: this.message};
    }

/**
 * @license
 * Copyright Andrey Chalkin  (https://github.com/L2jLiga). All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/L2jLiga/fastify-decorators/blob/master/LICENSE
 */

import { GET, RequestHandler } from 'fastify-decorators';

@GET({
    url: '/get',
    options: {}
})
class GetHandler extends RequestHandler {
    public async handle(): Promise {
        return {message: 'GET works!'};
    }
}

export = GetHandler;