export declare function log(msg: string, ...args: unknown[]): void;
/**
 * Always-on telemetry/timing line. Used by --timing flag on
 * `sverklo reindex` so users get phase breakdowns without
 * also opting into the noisy SVERKLO_DEBUG firehose. Dogfood
 * perf review 2026-05-14 (Issue I3).
 */
export declare function logTiming(msg: string): void;
/**
 * Always-on summary line. Used by the indexer for the final "Indexing
 * complete" output so users see total elapsed time on every flow that
 * triggers indexing (`sverklo audit`, `sverklo index`, etc.), without
 * needing to opt into SVERKLO_DEBUG. Issue #54.
 */
export declare function logSummary(msg: string): void;
export declare function logError(msg: string, err?: unknown): void;