import type { HarneryLogLevel, HarneryStorageFamily, HarneryStoragePolicy } from "./contract.js";
export type HarneryLogScalar = string | number | boolean | null;
export type HarneryLogFieldValue = HarneryLogScalar | readonly HarneryLogScalar[];
export type HarneryLogFields = Record<string, HarneryLogFieldValue>;
export type HarneryLazyFields = HarneryLogFields | (() => HarneryLogFields);
export type HarneryLogContext = Record<string, HarneryLogScalar>;
export interface HarnerySanitizedError {
    name: string;
    message: string;
    code?: string;
    stack?: string;
    cause?: HarnerySanitizedError;
}
export interface HarneryLogRecordV1 {
    schema: "harnery.log-record/v1";
    kind: "record" | "aggregate" | "metrics-generation-reset";
    emitted_at: string;
    family_id: string;
    policy_version: string;
    component_id: string;
    level: HarneryLogLevel;
    event: string;
    writer_id: string;
    writer_seq: number;
    context: HarneryLogContext;
    fields: HarneryLogFields;
    error?: HarnerySanitizedError;
    aggregate?: {
        count: number;
        first_emitted_at: string;
        last_emitted_at: string;
        represented_bytes: number;
        exemplar_digests: readonly string[];
    };
}
export interface OpenTelemetryLogRecord {
    timestamp: string;
    severityText: Uppercase<HarneryLogLevel>;
    body: string;
    attributes: Record<string, HarneryLogFieldValue>;
}
export declare class HarneryLogEncodingError extends Error {
    constructor(message: string);
}
export declare function validateLogEvent(event: string): void;
export declare function validateLogContext(context: HarneryLogContext): HarneryLogContext;
export declare function validateLogFields(fields: HarneryLogFields, policy: HarneryStoragePolicy): HarneryLogFields;
export declare function sanitizeLogError(error: unknown, depth?: number): HarnerySanitizedError;
export declare function encodeLogRecord(record: HarneryLogRecordV1, family: HarneryStorageFamily): Buffer;
export declare function parseLogRecord(line: string): HarneryLogRecordV1;
export declare function toOpenTelemetryLogRecord(record: HarneryLogRecordV1): OpenTelemetryLogRecord;
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