How to use the @laconia/adapter-api.apigateway function in @laconia/adapter-api

}
};

const validateEnabledFlag = enabled => {
  if (!enabled) {
    throw new Error("Place order lambda is off");
  }
};

const instances = ({ env }) => ({
  orderRepository: new DynamoDbOrderRepository(env.ORDER_TABLE_NAME),
  idGenerator: new UuidIdGenerator(),
  orderStream: new KinesisOrderStream(env.ORDER_STREAM_NAME)
});

const apigateway = adapterApi.apigateway({
  inputType: "body",
  includeInputHeaders: true,
  errorMappings: {
    ValidationError: () => ({ statusCode: 400 })
  }
});

exports.app = async (
  newOrder,
  headers,
  { orderRepository, orderStream, idGenerator, apiKey, restaurants, enabled }
) => {
  validateEnabledFlag(enabled);
  validateApiKey(headers, apiKey);
  const orderId = idGenerator.generate();
  const order = Object.assign(

const fs = require("fs");
const laconia = require("@laconia/core");
const adapterApi = require("@laconia/adapter-api");

const apigateway = adapterApi.apigateway({
  responseAdditionalHeaders: {
    "Content-Type": "image/png"
  }
});
const imgPath = `${__dirname}/resources/2_vertical@0.5x.png`;

exports.app = () => fs.readFileSync(imgPath);

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