export type ParsedLogLine = {
    time?: string;
    level?: string;
    subsystem?: string;
    module?: string;
    message: string;
    raw: string;
};
/**
 * Flatten one tslog record into the line we actually write.
 *
 * tslog's native shape is hostile to tracing: the message arrives under
 * positional keys ("0", "1"), the subsystem is a JSON string nested in
 * `_meta.name`, and every single line repeats hostname/runtime/pid in `_meta`.
 * You cannot grep it, jq it, or read it.
 *
 * The flat shape is one self-describing JSON object per line — stable keys,
 * message as `msg`, structured metadata merged at the top level so fields like
 * runId/sessionKey are directly queryable:
 *
 *   {"ts":"...","level":"info","subsystem":"proactive","msg":"...","runId":"..."}
 */
export declare function toFlatLogRecord(logObj: Record<string, unknown>): Record<string, unknown>;
export declare function parseLogLine(raw: string): ParsedLogLine | null;