export interface FrictionEntry {
    attempted: string;
    error: string;
    exitCode: number;
    ts: string;
}
/**
 * Default friction-log location: a `friction.log` file inside the shared
 * Quonfig config home (`~/.quonfig`, the same dir as tokens/profile config).
 * Honors `QUONFIG_CONFIG_HOME` via `getQuonfigConfigHome()` so tests and
 * isolated environments redirect it along with everything else.
 */
export declare function getDefaultFrictionLogPath(configHome?: string): string;
export declare function getFrictionLogPath(envValue?: string | undefined, cwd?: string): null | string;
export declare function buildFrictionEntry(opts: {
    argv?: string[];
    binName?: string;
    error?: string;
    exitCode: number;
    now?: Date;
}): FrictionEntry;
export declare function appendFrictionEntry(logPath: string, entry: FrictionEntry): void;
export declare function extractLastErrorLine(stderr: string): string | undefined;
export declare function installStderrCapture(): () => string;