import { type Logger } from '@logtape/logtape';
export declare const CHKIT_LOGGER_CATEGORY: readonly ["chkit"];
export declare const CHKIT_BACKFILL_LOGGER_CATEGORY: readonly ["chkit", "backfill"];
export declare const SLOW_CLICKHOUSE_QUERY_MS = 5000;
export declare const SLOW_CLICKHOUSE_QUERY_REPEAT_INITIAL_MS = 5000;
export declare const SLOW_CLICKHOUSE_QUERY_REPEAT_MAX_MS = 30000;
export declare function getBackfillLogger(...segments: string[]): Logger;
export declare function formatBytes(bytes: number): string;
export declare function summarizeSql(sql: string, maxLength?: number): string;
export declare function describeSqlOperation(sql: string): string;
export declare function describeSqlContext(sql: string): string | undefined;
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