gateway.ts

import { ApiGatewayManagementApi } from 'aws-sdk';

export const createGateway = (requestContext: any) =>
  new ApiGatewayManagementApi({
    apiVersion: 'latest',
    endpoint: `https://${requestContext.apiId}
      .execute-api.us-east-1.amazonaws.com/${requestContext.stage}`
  });