export class ServerResponse { public done: boolean; public body: T | null; public title: string | null = null; public message: string | null; constructor(done: boolean, body: T, message: string | null = null) { this.done = !!done; this.body = body === null || body === undefined ? null : body; this.message = message?.toString().trim() ?? null; } public withTitle(title: string) { this.title = title; return this; } public setMessage(message: string) { this.message = message; return this; } }