MCP TS Remove Passthrough Trick

types.d.ts

type RemovePassthrough<T> = T extends object
    ? T extends Array<infer U>
        ? Array<RemovePassthrough<U>>
        : T extends Function
          ? T
          : {
                [K in keyof T as string extends K ? never : K]: K extends "properties" ? T[K] : RemovePassthrough<T[K]>;
            }
    : T;

export type ProgressToken = RemovePassthrough<Infer<typeof ProgressTokenSchema>>;
export type Cursor = RemovePassthrough<Infer<typeof CursorSchema>>;
export type Request = RemovePassthrough<Infer<typeof RequestSchema>>;
export type RequestMeta = RemovePassthrough<Infer<typeof RequestMetaSchema>>;
export type Notification = RemovePassthrough<Infer<typeof NotificationSchema>>;
export type Result = RemovePassthrough<Infer<typeof ResultSchema>>;
export type RequestId = RemovePassthrough<Infer<typeof RequestIdSchema>>;
export type JSONRPCRequest = RemovePassthrough<Infer<typeof JSONRPCRequestSchema>>;
export type JSONRPCNotification = RemovePassthrough<Infer<typeof JSONRPCNotificationSchema>>;
export type JSONRPCResponse = RemovePassthrough<Infer<typeof JSONRPCResponseSchema>>;
export type JSONRPCError = RemovePassthrough<Infer<typeof JSONRPCErrorSchema>>;
export type JSONRPCMessage = RemovePassthrough<Infer<typeof JSONRPCMessageSchema>>;
export type EmptyResult = RemovePassthrough<Infer<typeof EmptyResultSchema>>;
export type CancelledNotification = RemovePassthrough<Infer<typeof CancelledNotificationSchema>>