import { type SessionRecord } from '../types/session/records.js';
/** SHA-256 (lowercase hex) of one complete line, its terminating newline included. */
export declare function recordSha256(line: string | Uint8Array): string;
/** Serialise a record as the one line a log stores for it. */
export declare function formatSessionLogLine(record: SessionRecord): string;
export type SessionLogLineFault = 'torn' | 'too-large' | 'not-utf8' | 'not-json' | 'not-a-record';
/** One line that is not a complete, valid record. `fault` says which rule it broke. */
export declare class SessionLogLineError extends Error {
    readonly fault: SessionLogLineFault;
    readonly name = "SessionLogLineError";
    constructor(fault: SessionLogLineFault, message: string);
}
export interface ParsedSessionLogLine {
    readonly record: SessionRecord;
    /** Bytes of the line, newline included: the `length` of a pointer to it. */
    readonly length: number;
    readonly sha256: string;
}
/**
 * Parse one complete line of a session log: exactly one record followed by
 * one `\n`. A line with no terminating newline is `torn` (a crash mid-append);
 * the reader, not this function, decides to truncate it.
 */
export declare function parseSessionLogLine(line: string | Uint8Array): ParsedSessionLogLine;
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