/**
 * Generate a ULID — a 26-char Crockford-base32 identifier whose first 10 chars
 * encode the millisecond timestamp (so IDs sort lexicographically by creation
 * time) followed by 16 chars of randomness. Zero runtime dependencies.
 *
 * The codebase convention is "IDs are ULIDs"; use this for any new store key.
 */
export declare function ulid(seedTime?: number): string;
/** True for a well-formed 26-char Crockford-base32 ULID. */
export declare function isUlid(value: string): boolean;
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