import type { ImageContent } from "@earendil-works/pi-ai";
interface FabricActorHostMediaDescriptor {
    type: "image";
    mediaIndex: number;
    mimeType: string;
}
export interface PreparedFabricActorHostPayload {
    payload: unknown;
    images: ImageContent[];
    media: FabricActorHostMediaDescriptor[];
}
export declare const prepareFabricActorHostPayload: (value: unknown, maxChars: number) => PreparedFabricActorHostPayload;
export interface PreparedFabricActorContextPayload {
    digest: Record<string, unknown>;
    transcript: unknown[];
}
/**
 * Bounds an actor context by structure, never by cutting JSON text, so the
 * digest always survives as an object. Over budget, the oldest transcript
 * entries are dropped first. If the digest alone exceeds the budget, the
 * transcript is empty and the digest is shortened by `shrinkActorDigest`.
 */
export declare const prepareFabricActorContextPayload: (context: {
    digest: object;
    transcript: readonly unknown[];
}, maxChars: number) => PreparedFabricActorContextPayload;
export {};
//# sourceMappingURL=host-event-payload.d.ts.map