import { type LogProcessor } from './context';
/**
 * Captures recent log entries in a circular buffer for debug log dump.
 */
export declare class LogBuffer {
    private readonly _buffer;
    constructor(size?: number);
    /**
     * Log processor that can be registered with `log.runtimeConfig.processors`.
     * Captures every level except TRACE (does not apply `shouldLog` / filter; use for full debug dumps).
     */
    readonly logProcessor: LogProcessor;
    /** Number of entries currently in the buffer. */
    get size(): number;
    /** Discard all buffered entries. */
    clear(): void;
    /** Serialize buffer contents as NDJSON (newline-delimited JSON). */
    serialize(): string;
}
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