export type RuntimeReadinessState = "starting" | "ready" | "closing" | "failed";
/** Small startup gate used while HTTP is listening before structured sessions start. */
export declare class RuntimeReadiness {
    #private;
    get state(): RuntimeReadinessState;
    get isReady(): boolean;
    markReady(): void;
    markClosing(): void;
    markFailed(error: unknown): void;
    requireReady(): void;
}
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