Method on

packages/mcp-client/src/manager.ts:191–199

(
    event: E,
    handler: McpManagerEvents[E],
  )

  }

  on<E extends keyof McpManagerEvents>(
    event: E,
    handler: McpManagerEvents[E],
  ): void {
    if (!this.listeners.has(event)) {
      this.listeners.set(event, new Set())
    }
    this.listeners.get(event)!.add(handler)
  }

  off(event: string, handler: EventHandler): void {
    this.listeners.get(event)?.delete(handler)