/**
 * .what = computes a unique temp directory name with timestamp prefix and slug
 * .why = timestamp prefix enables age-based cleanup without stat calls
 *        slug helps debuggers identify which test created the directory
 *
 * @example
 * computeTempDirName({ slug: 'my-test' })
 * // => '2026-01-19T12-34-56.789Z.my-test.a1b2c3d4'
 */
export declare const computeTempDirName: (input: {
    slug: string;
}) => string;
/**
 * .what = parses timestamp from a temp directory name
 * .why = enables age calculation for prune decisions
 */
export declare const parseTempDirTimestamp: (input: {
    dirName: string;
}) => Date | null;