import type { Command } from 'commander';
/**
 * Parse a human-readable size literal (`5MB`, `1024`, `5KB`) into bytes.
 * Accepts the suffix-less form too (interpreted as bytes). Returns null
 * when the input cannot be parsed so the caller can issue a clear error.
 */
export declare function parseSize(value: string): number | null;
interface RotateOptions {
    maxSize?: string;
    maxFiles?: string;
    tee?: boolean;
}
export interface ResolvedRotateOptions {
    maxBytes: number;
    maxFiles: number;
    teeEnabled: boolean;
}
/**
 * Pure-function validator extracted so unit tests can exercise the
 * --max-size / --max-files / --no-tee parsing without spawning a real
 * stdin pipe. Returns either the resolved numeric options or an
 * already-localized error message the caller can `logger.error` on.
 */
export declare function resolveRotateOptions(opts: RotateOptions): {
    ok: true;
    value: ResolvedRotateOptions;
} | {
    ok: false;
    error: string;
};
/**
 * Stream stdin → a `RotatingFileWriter`, optionally tee-ing each chunk
 * back to stdout so an outer pipeline (e.g. the wrapper script's docker
 * subprocess) can still observe the agent's output. Default: tee enabled
 * so the existing systemd / launchd `StandardOutput` redirection (the
 * fallback container of last resort) keeps receiving everything.
 *
 * Designed for the per-project wrapper script:
 *
 *     docker run ... 2>&1 | ai-support-agent log-rotate <path>
 *
 * Lives outside the normal agent process tree so a crash in the agent
 * never strands the writer (it just sees EOF on stdin and exits).
 */
/**
 * Sink the tee writes its chunks to. Defaults to the real stdout but is
 * injectable so tests can observe tee behaviour without spying on
 * `process.stdout.write` — spying on / replacing `process.stdout.write` inside
 * a test interferes with Jest's own reporter and hangs the Jest worker on CI.
 */
export interface TeeSink {
    write(chunk: Buffer): void;
}
export declare function registerLogRotateCommand(program: Command, teeSink?: TeeSink): void;
export {};
//# sourceMappingURL=log-rotate-command.d.ts.map