export type IncidentEvent = {
    ts: string;
    event: "breaker-tripped";
    restartCount: number;
    windowMs: number;
} | {
    ts: string;
    event: "restart";
    pid: number | null;
    exitCode: number | null;
    signal: string | null;
} | {
    ts: string;
    event: "start";
    pid: number;
} | {
    ts: string;
    event: "stop";
    pid: number;
    reason: "sigterm" | "sigkill" | "normal";
} | {
    ts: string;
    event: "orphan-killed";
    pid: number;
} | {
    ts: string;
    event: "sandbox-drop";
    file: string;
    source: string;
} | {
    ts: string;
    event: "preflight-failure";
    role: string;
    detail: string;
} | {
    ts: string;
    event: "debounce-overflow";
    droppedCount: number;
    queueSize: number;
    currentPaths: string[];
} | {
    ts: string;
    event: "hook-timeout";
    paths: string[];
    timeoutMs: number;
};
/**
 * Append-only writer for .bober/graph/incidents.jsonl.
 *
 * Each call writes a single newline-terminated JSON object.
 * The directory is created defensively on each write, in case
 * GraphArtifactStore.ensureLayout() has not been called yet.
 */
export declare class IncidentLog {
    private readonly path;
    constructor(projectRoot: string);
    append(e: IncidentEvent): Promise<void>;
}
//# sourceMappingURL=incidents.d.ts.map