import { ILogEntry } from "@spinajs/log-common";
import { FileTarget } from "./FileTarget.js";
/**
 * Emits newline-delimited JSON ( NDJSON ) to a file through the FileTarget
 * pipeline ( batched append, write-lock, rotation, retention, zip ): one
 * structured JSON object per log entry so log collectors ( Loki, Elastic,
 * Datadog ) can index fields directly rather than regex-parsing a layout.
 *
 * It subclasses the concrete FileTarget and overrides ONLY the per-entry
 * serialization, reusing IFileTargetOptions unchanged. The inherited `layout`
 * option is intentionally IGNORED ( JSON, not a string layout ). `time` is
 * event-time: it is stamped in formatEntry, which runs in write() before the
 * entry is buffered, so it reflects when the event was logged, not when the
 * batch is flushed to disk.
 */
export declare class JsonFileTarget extends FileTarget {
    protected formatEntry(data: ILogEntry): string;
}
//# sourceMappingURL=JsonFileTarget.d.ts.map