Interface FastifyInstanceLike

interface FastifyInstanceLike {
    addContentTypeParser(
        contentType: string,
        options: { parseAs: "string" },
        parser: (
            request: unknown,
            body: string,
            done: (error: Error | null, body?: unknown) => void,
        ) => void,
    ): void;
    all(
        path: string,
        handler: (
            request: FastifyRequestLike,
            reply: FastifyReplyLike,
        ) => Promise<unknown>,
    ): unknown;
    hasContentTypeParser(contentType: string): boolean;
}