export type SignalDeterminism = 'deterministic' | 'probabilistic';
export interface SignalCalibration {
    readonly determinism: SignalDeterminism;
    readonly method: string;
    readonly truePositiveRate?: number;
    readonly trueNegativeRate?: number;
    readonly measuredAt?: string;
}
export interface AdmissibilityPolicy {
    readonly minTruePositiveRate: number;
    readonly minTrueNegativeRate: number;
    readonly maxCalibrationAgeDays: number;
    readonly now?: () => Date;
}
export declare const DEFAULT_ADMISSIBILITY_POLICY: AdmissibilityPolicy;
export type Admissibility = 'deterministic' | 'calibrated' | 'advisory-uncalibrated' | 'advisory-below-threshold' | 'advisory-stale-calibration';
export interface AdmissibilityDecision {
    readonly blocking: boolean;
    readonly determinism: SignalDeterminism;
    readonly admissibility: Admissibility;
    readonly confidence?: number;
    readonly downgradedFromBlocking: boolean;
    readonly rationale: string;
}
export declare function admitBlocking(intendedBlocking: boolean, calibration: SignalCalibration, policy?: AdmissibilityPolicy): AdmissibilityDecision;