import type { FileSystem } from "../ports/filesystem.js";
import type { JsonCodec } from "../ports/codec.js";
import { DecisionEntry } from "./types.js";
export interface MetricsLoggerOptions {
    readonly fs: FileSystem;
    readonly codec: JsonCodec;
    readonly maxBytes?: number;
}
export declare class MetricsLogger {
    private readonly writer;
    constructor(logPath: string, options: MetricsLoggerOptions);
    log(entry: Omit<DecisionEntry, "ts">): Promise<void>;
}
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