import { ICommonTargetOptions, ILogEntry, LogTarget } from "@spinajs/log-common";
/**
 * Options for {@link MemoryTarget}.
 */
export interface IMemoryTargetOptions extends ICommonTargetOptions {
    /**
     * Max number of log entries retained in the ring buffer. Once exceeded, the
     * oldest entries are dropped. Default is 100.
     */
    limit: number;
}
/**
 * Ring-buffer target that keeps the last N log entries in memory. Lets a debug
 * / health endpoint or a crash handler read recent log context back in-process
 * ( eg. capturing all levels incl. trace ) without parsing the log file.
 *
 * Pure and browser-safe - no filesystem, no timers, no external deps.
 */
export declare class MemoryTarget extends LogTarget<IMemoryTargetOptions> {
    protected Buffer: ILogEntry[];
    constructor(options: IMemoryTargetOptions);
    write(data: ILogEntry): void;
    /**
     * Returns a shallow copy of the retained entries ( oldest first ) so callers
     * cannot mutate the ring buffer.
     */
    getRecords(): ILogEntry[];
    /**
     * Empties the buffer.
     */
    clear(): void;
}
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