handler.js

const laconia = require("@laconia/core");
const api = require("@laconia/adapter-api").apigateway({ inputType: "params" });

const app = async (event, { }) => {
  console.log(await event);
  return event;
};

exports.handler = laconia(api(app));

serverless.yml

service: laconia-websocket-test
provider:
  name: aws
  runtime: nodejs8.10
  stage: dev
  region: eu-central-1
  profile: default

functions:
  hello:
    handler: handler.handler
    events:
    - http: GET laconia
    - websocket:
        route: laconia