import { type DeviceIdentity } from "./device-identity.js";
export type GraphEventKind = "entity.upsert" | "entity.delete" | "edge.upsert" | "edge.delete" | "artifact.version";
export type GraphEventDraft = {
    kind: GraphEventKind;
    payload: Record<string, unknown>;
    purpose: string;
    sensitivity?: "normal" | "sensitive" | "restricted";
    actor?: Record<string, unknown>;
    provenance?: Record<string, unknown>;
    policyDecision?: Record<string, unknown>;
    occurredAt?: string;
};
export type SignedGraphEvent = GraphEventDraft & {
    eventId: string;
    bootId: string;
    sequence: string;
    schemaVersion: 1;
    occurredAt: string;
    sensitivity: "normal" | "sensitive" | "restricted";
    actor: Record<string, unknown>;
    provenance: Record<string, unknown>;
    policyDecision: Record<string, unknown>;
    signature: string;
};
export declare function canonicalDeviceEventPayload(deviceId: string, event: Omit<SignedGraphEvent, "signature"> | SignedGraphEvent): string;
export declare function appendGraphEvent(draft: GraphEventDraft, options?: {
    directory?: string;
    identity?: DeviceIdentity;
    bootId?: string;
}): SignedGraphEvent;
export declare function flushGraphEventOutbox(options: {
    platformUrl: string;
    koiId: string;
    gatewayToken: string;
    directory?: string;
    fetchImpl?: typeof fetch;
}): Promise<{
    sent: number;
    remaining: number;
}>;
export declare function graphEventOutboxSize(directory?: string): number;