Duration: {
    typeUrl: string;
    decode(input: Uint8Array | BinaryReader, length?: number): Duration;
    encode(message: Duration, writer?: BinaryWriter): BinaryWriter;
    fromAmino(object: string): Duration;
    fromAminoMsg(object: DurationAminoMsg): Duration;
    fromPartial(object: {
        nanos?: number;
        seconds?: bigint;
    }): Duration;
    fromProtoMsg(message: DurationProtoMsg): Duration;
    toAmino(message: Duration): string;
    toProto(message: Duration): Uint8Array;
    toProtoMsg(message: Duration): DurationProtoMsg;
}