@thgh/tunnelmole/dist/src/messages/initialise-message.d.ts

Tunnelmole, an open source ngrok alternative. Instant public URLs for any http/https based application. Available as a command line application or as an NPM dependency for your code. Stable and maintained. Good test coverage. Works behind firewalls

export default interface InitialiseMessage {
    type: string;
    clientId: string;
    apiKey?: string;
    subdomain?: string;
}