@shipengine/connect-carrier-api/src/carrier-app.ts

This is the typescript/javascript definitions for carrier api

import { obsoleteAppError } from '@shipengine/connect-runtime';

/**
 * @deprecated Connect apps should no longer instantiate themselves.
 * See https://connect.shipengine.com/getting-started/v2-v4-upgrade/ for more information on upgrading.
 */
export class CarrierApp {
  constructor(_: unknown) {
    obsoleteAppError();
  }
}