/** Rotate above this size. Two generations at 32 MB bounds the log at ~64 MB. */
export declare const LOG_MAX_BYTES: number;
export interface RotateResult {
    rotated: boolean;
    /** Size at rotation, in bytes. 0 when nothing was rotated. */
    sizeBefore: number;
}
/**
 * Rotate `logPath` if it exceeds `maxBytes`.
 *
 * Best-effort in both directions: a missing log, an unreadable one, or a
 * read-only directory all mean "not rotated", never an error. A daemon must not
 * fail to start because it could not tidy its own log.
 */
export declare function rotateLogIfLarge(logPath: string, maxBytes?: number): RotateResult;
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