/**
 * Shared migration folder + slug helpers (create + diff --write).
 */
export declare const sanitizeMigrationSlug: (raw: string) => string;
export declare const utcTimestamp14: () => string;
export declare const migrationDirExists: (path: string) => Promise<boolean>;
export declare const migrationIdPattern: RegExp;
export interface IMigrationWriteFromDiffInput {
    name: string;
    upSql: string;
    backfillSql?: string;
    constraintsSql?: string;
    verifySql?: string;
}
/** Create a timestamped migration folder and write `up.sql` (e.g. from `migration diff`). */
export declare const migrationWriteFromDiff: (options: IMigrationWriteFromDiffInput) => Promise<{
    migrationId: string;
    targetDir: string;
}>;
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