export interface SsnValidationOptions {
    allowCoordinationNumber?: boolean;
    allowInterimNumber?: boolean;
}
export interface SsnValidationResult {
    isValid: boolean;
    /** Normalized value without separators; `null` when empty or invalid. */
    digits: string | null;
}
/** Strip separators; keeps alphanumeric characters for interim numbers. */
export declare function stripSsnSeparators(value: string): string;
/** Validate a Swedish personal identity number. */
export declare function validateSsnNumber(value: string, options?: SsnValidationOptions): SsnValidationResult;
export declare function validateSsn(value: string, options?: SsnValidationOptions): boolean;
/** `null` when empty, otherwise whether the value is a valid personnummer. */
export declare function getSsnValidationState(value: string, options?: SsnValidationOptions): boolean | null;