export declare const ACTIVE_ACTOR_TIMEOUT_MS = 10000;
export declare const ACTIVE_ACTOR_MAX_BUFFER_BYTES: number;
export type ActiveActorEvidenceClass = "github-user-login" | "malformed-response" | "unavailable";
export type ActiveActorObservation = {
    attempt_id: string;
    observed_at: string;
    result: "verified";
    actor: string;
    evidence_class: "github-user-login";
} | {
    attempt_id: string;
    observed_at: string;
    result: "unknown";
    actor: null;
    evidence_class: Exclude<ActiveActorEvidenceClass, "github-user-login">;
};
export interface ActiveActorProbeRunner {
    run(args: readonly string[], options: {
        timeoutMs: number;
        maxBufferBytes: number;
    }): Promise<string>;
}
export interface ObserveActiveActorOptions {
    attemptId: string;
    now?: () => Date;
    timeoutMs?: number;
    runner?: ActiveActorProbeRunner;
}
export declare function observeActiveActor(options: ObserveActiveActorOptions): Promise<ActiveActorObservation>;
export declare const realActiveActorProbeRunner: ActiveActorProbeRunner;
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