import { WireType } from "./binary-encoding.js";
export declare const unknownFieldsSymbol: unique symbol;
export declare function listUnknownFields(message: any): ReadonlyArray<{
    no: number;
    wireType: WireType;
    data: Uint8Array;
}>;
export declare function handleUnknownField(message: any, no: number, wireType: WireType, data: Uint8Array): void;