Terrifying TS Types

export type TRpcHandlers = {
  listDecks: (data: ListDecksRequest) => Promise<ListDecksResponse>;
  getDeckById: (data: GetDeckByIdRequest) => Promise<GetDeckByIdResponse>;
  scryfallBulkDataLoader: (data: object) => Promise<string[]>;
  createDeck: (data: CreateDeckRequest) => Promise<CreateDeckResponse>;
};

export type TRpcEvent = {
  reply: (channel: string, ...args: any[]) => void;
};

export type TRpcMain = {
  on: (
    channel: string,
    handler: (event: TRpcEvent, request: RpcRequest<any>) => void
  ) => void;
};

export type TRpcServer = {
  [key in keyof TRpcHandlers]: (
    event: TRpcEvent,
    data: RpcRequest<ArgumentTypes<TRpcHandlers[key]>[0]>
  ) => Promise<RPCResponseType<TRpcHandlers[key]>>;
};

export type ArgumentTypes<F extends Function> = F extends (
  ...args: infer A
) => any
  ? A
  : never;

export type RPCResponseType<F extends Function> = F extends (
  ...args: any[]
) => Promise<infer R>
  ? R
  : never;


export type RpcRequestType<R> = R extends RpcRequest<infer T> ? T : never;

export type TRpcClient = {
  [key in keyof TRpcServer]: (
    data: RpcRequestType<ArgumentTypes<TRpcServer[key]>[1]>
  ) => ReturnType<TRpcServer[key]>;
};