Interface MessagerHandlers

interface MessagerHandlers {
    beforeInvoke?: (functionName: string) => void | Promise<void>;
    decodeLargeMessage?: (base64: string) => string;
    handleLargeMessage?: (
        str: string,
        limit: number,
    ) => { isLarge: boolean; message: string };
    sendHandler: MessagerSendHandler;
}