Introduction

Working With Monorepos

Workspaces

Shared Configs

Frontend

Schema

Backend

Introduction and Getting Started

Analyzing

Designing the Customer-facing UI with TailwindCSS

Data Model

Analysis and Design

PostgreSQL Ranges

The Provider Table

The Booking Table

Modelling with advanced Postgres features

Tailwind CSS

Foundation

Frontend State

Shared Components

Select Day

Frontend UI

Introducing tRPC

Connecting to tRPC

Refining the tRPC setup

Connecting to the Database

Generating Zod schemas

Endpoints

Testing tRPC Endpoints

Testing With the Database

Testing Frontend

Testing

Completing the Select Date Page

Infrastructure for Ranges

Completing Booking

Connecting The Dots

Conclusion and extra resources

This comprehensive course will equip you with the skills and knowledge to build modern full-stack applications using TypeScript, TailwindCSS, tRPC, and PostgreSQL. You will learn how to create a robust and scalable application architecture, from the backend data layer to the frontend UI.

PostgreSQL

NodeJS

Knex

React

TypeScript

tRPC

Monorepos simplify code development and can be split when necessary.

Setting up npm workspaces in our monorepo

Setting up shared Typescript, ESLint and Prettier configs

Master full-stack development with a single repository for everything!

Learn the art of full-stack development with this comprehensive course. Through implementing the latest technologies and techniques, the course directly addresses the most common challenges full-stack developers face:
- **Code consistency and sharing:** Monorepos eliminate the need for multiple repositories, ensuring consistent code across your application and facilitating seamless code sharing.
- **Technology integration:** Learn how to integrate modern technologies like TypeScript, Tailwind CSS, and tRPC, empowering you to build robust and maintainable applications.
- **Database management:** Master advanced PostgreSQL features to optimize data storage, retrieval, and manipulation, ensuring a high-performance and scalable backend.

Build type-safe full-stack applications with database-centric strategies

This comprehensive full-stack development course covers monorepos, TypeScript, Tailwind CSS, tRPC, and PostgreSQL, empowering you to build modern, scalable applications. Structured into 7 modules of bite-sized lessons, each module is designed to be engaging and informative, combining video lectures, hands-on coding exercises, and real-world examples.

Fullstack Typescript with TailwindCSS and tRPC Using Modern Features of PostgreSQL

Writing PostgreSQL ranges for the application database.

Breaking down the UI to build it with Tailwind CSS

Master monorepos for streamlined development workflows and enhanced collaboration

Implement TypeScript for type-safe code that prevents errors and improves maintainability

Utilize Tailwind CSS to create consistent and beautiful user interfaces

Employ tRPC for seamless data exchange between frontend and backend

Harness advanced PostgreSQL features for optimized data storage, retrieval, and manipulation

Build modern, scalable full-stack applications using a unified approach

Now that you have a tRPC server running, let's connect to it from the frontend.
Go into your frontend folder and add the 

 (yes, this one is needed as well). Since you're using React, also add the 

, so that you can make queries using the React Query library.

$ cd services/frontend
$ npm i @trpc/client @trpc/server @trpc/react-query @tanstack/react-query

import { httpBatchLink } from '@trpc/client';
import { createTRPCReact } from '@trpc/react-query';

import type { AppRouter } from '../../backend/src/trpc/appRouter';

const trpc = createTRPCReact<AppRouter>();

const { hostname, protocol, port } = window.location;
const url = `${protocol}//${hostname}:${port}/trpc`;

export const trpcClient = trpc.createClient({
  links: [httpBatchLink({ url })],
});

export default trpc;

In this file, we'll follow the quick start instructions for setting up tRPC with React. One thing to point out here is that you should set the URL to point to where the page came from. You will be moving this into a configuration file later on.
In addition to the client, you need a query provider. My experience tells me that we will have a number of "providers", i.e. React components that wrap the entire app for one reason or another, so I tend to always create a 

import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
import { FC, ReactNode } from 'react';

import trpc, { trpcClient } from './trpc';

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      refetchOnMount: false,
      refetchOnReconnect: false,
      refetchOnWindowFocus: false,
      retry: false,
    },
  },
});

const Providers: FC<{ children: ReactNode }> = ({ children }) => (
  <trpc.Provider client={trpcClient} queryClient={queryClient}>
    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
  </trpc.Provider>
);

export default Providers;

This file sets up the framework for your app. It's nice to have a single place for this, as long as it doesn't grow too large, because it typically represents the machinery that you will want to mock or otherwise recreate when testing your app. We'll create the React Query client with some options that I like as defaults. Basically, with this configuration it's a little less aggressive in refetching data. I like to be in control of that more myself, but experiment with it to see what you like.

import './index.css';

import React from 'react';
import ReactDOM from 'react-dom/client';

import App from './App';
import Providers from './Providers';

ReactDOM.createRoot(document.getElementById('root')!).render(
  <React.StrictMode>
    <Providers>
      <App />
    </Providers>
  </React.StrictMode>
);

---
title: Connecting to tRPC
description: Connecting to the tRPC server from the frontend
isPublicLesson: true
privateVideoUrl: https://stream.mux.com/rvWRMso902m02D34DZdgd0200RK007TEkCDbwbVIXlVOFKdM.m3u8
code: https://gitlab.com/fullstackio/books/newline-course-apps/fullstack-typescript-with-tailwindcss-and-trpc-using-modern-features-of-postgresql-app/-/tree/main/module_05/lesson_05.02?ref_type=heads
---

## Connecting to tRPC

Now that you have a tRPC server running, let's connect to it from the frontend.
Go into your frontend folder and add the `@trpc/client` as well as `@trpc/server` (yes, this one is needed as well). Since you're using React, also add the `@trpc/react-query` and `@tanstack/react-query`, so that you can make queries using the React Query library.

```bash
$ cd services/frontend
$ npm i @trpc/client @trpc/server @trpc/react-query @tanstack/react-query
```

Create a `trpc.ts` file in the `src` folder:

```ts
import { httpBatchLink } from '@trpc/client';
import { createTRPCReact } from '@trpc/react-query';

import type { AppRouter } from '../../backend/src/trpc/appRouter';

const trpc = createTRPCReact<AppRouter>();

const { hostname, protocol, port } = window.location;
const url = `${protocol}//${hostname}:${port}/trpc`;

export const trpcClient = trpc.createClient({
  links: [httpBatchLink({ url })],
});

export default trpc;
```

In this file, we'll follow the quick start instructions for setting up tRPC with React. One thing to point out here is that you should set the URL to point to where the page came from. You will be moving this into a configuration file later on.
In addition to the client, you need a query provider. My experience tells me that we will have a number of "providers", i.e. React components that wrap the entire app for one reason or another, so I tend to always create a `Providers.tsx` file in the `src` folder:

```tsx
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
import { FC, ReactNode } from 'react';

import trpc, { trpcClient } from './trpc';

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      refetchOnMount: false,
      refetchOnReconnect: false,
      refetchOnWindowFocus: false,
      retry: false,
    },
  },
});

const Providers: FC<{ children: ReactNode }> = ({ children }) => (
  <trpc.Provider client={trpcClient} queryClient={queryClient}>
    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
  </trpc.Provider>
);

export default Providers;
```

This file sets up the framework for your app. It's nice to have a single place for this, as long as it doesn't grow too large, because it typically represents the machinery that you will want to mock or otherwise recreate when testing your app. We'll create the React Query client with some options that I like as defaults. Basically, with this configuration it's a little less aggressive in refetching data. I like to be in control of that more myself, but experiment with it to see what you like.

You can now use this in your `main.tsx` file:

```tsx
import './index.css';

import React from 'react';
import ReactDOM from 'react-dom/client';

import App from './App';
import Providers from './Providers';

ReactDOM.createRoot(document.getElementById('root')!).render(
  <React.StrictMode>
    <Providers>
      <App />
    </Providers>
  </React.StrictMode>
);
```

You might feel tempted to add the `<StrictMode>` component to `Providers` as well, and you can but it will show you an annoying warning in React DevTools that `Providers` itself is not running in strict mode. For this reason alone, I don't do that.

Connecting to the tRPC server from the frontend

Learn

The newline Guide to Building Your First GraphQL Server with Node and TypeScript

Teach

Amelia Wattenberger

Author of Fullstack D3

Community

Fullstack Typescript with TailwindCSS and tRPC Using Modern Features of PostgreSQL

Module 1: Introduction and Getting Started

Introduction:

Start Here

Lesson 1: (3:09)

Introduction

Lesson 2: (6:35)

Working With Monorepos

Lesson 3: (6:45)

Workspaces

Lesson 4: (17:56)

Shared Configs

Lesson 5: (9:27)

Frontend

Lesson 6: (16:20)

Schema

Lesson 7: (5:21)

Backend

Module 2: Analysis and Design

Lesson 1: (3:09)

Analyzing

Lesson 2: (4:04)

Designing the Customer-facing UI with TailwindCSS

Lesson 3: (2:49)

Data Model

Module 3: Modelling with advanced Postgres features

Lesson 1: (6:18)

PostgreSQL Ranges

Lesson 2: (16:10)

The Provider Table

Lesson 3: (4:47)

The Booking Table

Module 4: Frontend UI

Lesson 1: (1:25)

Tailwind CSS

Lesson 2: (7:58)

Foundation

Lesson 3: (21:53)

Frontend State

Lesson 4: (4:52)

Shared Components

Lesson 5: (16:13)

Select Day

Module 5: Endpoints

Lesson 1: (7:45)

Introducing tRPC

Lesson 2: (17:22)

Connecting to tRPC

Lesson 3: (7:22)

Refining the tRPC setup

Lesson 4: (7:28)

Connecting to the Database

Lesson 5: (4:56)

Generating Zod schemas

Module 6: Testing

Lesson 1: (4:33)

Testing tRPC Endpoints

Lesson 2: (25:00)

Testing With the Database

Lesson 3: (12:37)

Testing Frontend

Module 7: Connecting The Dots

Lesson 1: (21:07)

Completing the Select Date Page

Lesson 2: (14:07)

Infrastructure for Ranges

Lesson 3: (15:49)

Completing Booking

Module 8: Conclusion and extra resources

Lesson 1: (1:02)

Conclusion and extra resources

Connecting to tRPC