import { Keystore } from '../keystore';
/**
 * Get the keystore path
 */
export declare function getStorePath(customPath?: string): string;
/**
 * Get the passphrase with fallback chain:
 * 1. If noEncryption is true, return null
 * 2. Try environment variable
 * 3. If interactive (TTY), prompt user
 * 4. Otherwise error
 */
export declare function getPassphrase(noEncryption?: boolean): Promise<string | null>;
/**
 * Output data as formatted JSON
 */
export declare function outputJson(data: unknown): string;
/**
 * Output data as a simple table
 */
export declare function outputTable(data: Record<string, unknown>): string;
/**
 * Format a DID for display (truncate if too long)
 */
export declare function formatDid(did: string, maxLength?: number): string;
/**
 * Parse a date string for display
 */
export declare function formatDate(dateStr: string): string;
/**
 * Validate that a string is a valid DID
 */
export declare function validateDid(did: string): void;
/**
 * Get a keystore instance for reading existing data
 * Skips passphrase validation for backwards compatibility
 */
export declare function getExistingKeystore(storePath?: string, noEncryption?: boolean): Promise<Keystore>;
/**
 * Get a keystore instance for creating new data
 * Validates passphrase strength
 */
export declare function getNewKeystore(storePath?: string, noEncryption?: boolean): Promise<Keystore>;
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