export interface DriftResult {
    valid: boolean;
    violations: DriftViolation[];
}
export interface DriftViolation {
    path: string;
    variants: string[];
    values: Record<string, unknown>;
}
/**
 * Deterministic hash of a config object.
 * JSON-stringifies with recursively sorted keys, then returns
 * the first 16 hex chars of the SHA-256 digest.
 */
export declare function computeConfigHash(config: object): string;
/**
 * Compare effective configs across variants and verify that differences
 * only appear within declared `vary` paths (JSON Pointer subtree prefix).
 */
export declare function detectDrift(configs: Record<string, object>, varyPaths: string[]): DriftResult;
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