import { CID } from "multiformats";
import { DbMetaEvent, WALState } from "./types.js";
import { Result } from "@adviser/cement";
export declare const FPEnvelopeTypes: {
    readonly CAR: "car";
    readonly FILE: "file";
    readonly META: "meta";
    readonly WAL: "wal";
};
export type FPEnvelopeType = (typeof FPEnvelopeTypes)[keyof typeof FPEnvelopeTypes];
export interface FPEnvelope<T> {
    readonly type: FPEnvelopeType;
    readonly payload: T;
}
export interface FPEnvelopeCar extends FPEnvelope<Uint8Array> {
    readonly type: typeof FPEnvelopeTypes.CAR;
}
export interface FPEnvelopeFile extends FPEnvelope<Uint8Array> {
    readonly type: typeof FPEnvelopeTypes.FILE;
}
export interface FPEnvelopeMeta extends FPEnvelope<DbMetaEvent[]> {
    readonly type: typeof FPEnvelopeTypes.META;
}
export interface FPWALCarsOps {
    readonly cars: CID[];
}
export interface FPEnvelopeWAL extends FPEnvelope<WALState> {
    readonly type: typeof FPEnvelopeTypes.WAL;
}
export declare function Car2FPMsg(fpcar: Uint8Array): Result<FPEnvelopeCar>;
export declare function File2FPMsg(fpfile: Uint8Array): Result<FPEnvelopeFile>;