/**
 * Leveled logger shared by the bridge runtime.
 *
 * Levels: debug < info < warn < error. The write threshold defaults to
 * "info" (DEBUG lines are not emitted unless raised); the CLI can raise it
 * via `--level debug` (run / logs), and config `logLevel` can lower/raise
 * the write threshold for the service.
 *
 * Output format: `[ISO timestamp] [LEVEL] message` — one line per call.
 * Objects are JSON-serialized; long strings are truncated (bounded lines,
 * journald-friendly).
 */
export type LogLevel = "debug" | "info" | "warn" | "error";
export declare function setLogLevel(level: LogLevel): void;
export declare function getLogLevel(): LogLevel;
/** Parse a CLI/config level string; undefined when invalid. */
export declare function parseLogLevel(value: string): LogLevel | undefined;
export declare function isEnabled(level: LogLevel): boolean;
export declare const logger: {
    debug: (...args: unknown[]) => void;
    info: (...args: unknown[]) => void;
    warn: (...args: unknown[]) => void;
    error: (...args: unknown[]) => void;
};
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