### Monorepo Build Workflow with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

This section details the commands to build all packages within the monorepo using Preconstruct. It includes steps for installing dependencies, building packages, and starting development servers.

```bash
# Install dependencies for all packages
yarn

# Build all packages (creates dist files)
yarn build

# Expected output:
# ✨ @monorepo-starter/button success
# ✨ @monorepo-starter/graphql-api success

# Start the GraphQL server
yarn start:server

# In another terminal, start the Next.js app
yarn start:next

# Visit http://localhost:3000 to see the app running
```

--------------------------------

### Monorepo Package Installation with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Provides commands for managing package dependencies within the monorepo. It covers installing dependencies for the entire monorepo, individual packages, and checking/fixing version conflicts using `manypkg`.

```bash
# Install a dependency for the entire monorepo
yarn add lodash -W

# Install a dependency for a specific package
cd packages/button
yarn add prop-types

# Return to root and install all dependencies
cd ../..
yarn

# Check for version conflicts across packages
yarn manypkg check

# Auto-fix version conflicts
yarn manypkg fix
```

--------------------------------

### Next.js Apollo Client Setup

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Configuration for Apollo Client within a Next.js application. This setup enables the frontend application to efficiently interact with the GraphQL API, demonstrating client-side integration patterns.

```javascript
import React from "react";
import fetch from "isomorphic-unfetch";
import ApolloClient from "apollo-boost";
import { ApolloProvider } from "@apollo/react-hooks";

// Initialize Apollo Client
const client = new ApolloClient({
  uri: "http://localhost:4000/",
  fetch
});

// Wrap your Next.js app with ApolloProvider
const App = ({ Component, pageProps }) => (
  <ApolloProvider client={client}>
    <Component {...pageProps} />
  </ApolloProvider>
);

export default App;
```

--------------------------------

### Monorepo Cleanup with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Explains how to clean generated files and dependencies across all packages in the monorepo. This includes removing `node_modules` and `dist` folders to allow for a fresh installation.

```bash
# Clean all node_modules and dist folders
yarn clean

# Expected behavior:
# - Removes node_modules from root
# - Removes node_modules from each package
# - Removes dist folders from each package
# - Allows fresh reinstall with: yarn

# After cleanup, reinstall
yarn
```

--------------------------------

### Apollo React Hooks - useLazyQuery in JavaScript

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Shows how to use the `useLazyQuery` hook from `@apollo/react-hooks` to execute GraphQL queries on demand, typically triggered by user interaction. This example fetches author details based on a name.

```javascript
import React from "react";
import Button from "@monorepo-starter/button";
import { useLazyQuery } from "@apollo/react-hooks";
import { gql } from "apollo-boost";

const getAuthorDetails = gql`
  query($name: String) {
    author(name: $name) {
      name
      books {
        title
      }
    }
  }
`;

function AuthorDetails() {
  const [getAuthor, { loading, error, data }] = useLazyQuery(getAuthorDetails);

  return (
    <div>
      <Button onClick={() => getAuthor({ variables: { name: "Ann Leckie" } })}>
        Load Author Details
      </Button>

      {loading && <p>Loading...</p>}
      {error && <p>Error: {error.message}</p>}
      {data && (
        <div>
          <h3>{data.author.name}</h3>
          <ul>
            {data.author.books.map(({ title }) => (
              <li key={title}>{title}</li>
            ))}
          </ul>
        </div>
      )}
    </div>
  );
}

export default AuthorDetails;
```

--------------------------------

### GraphQL API Query Authors (cURL)

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Example using cURL to query all authors from the GraphQL API. This demonstrates how to interact with the backend service from external clients, showcasing a common use case for API testing and integration.

```bash
# Query all authors
curl -X POST http://localhost:4000/ \
  -H "Content-Type: application/json" \
  -d '{ 
    "query": "{ authors { name } }" 
  }'

# Expected response:
# {
#   "data": {
#     "authors": [
#       { "name": "Ann Leckie" },
#       { "name": "N K Jemisin" },
#       { "name": "Melissa Caruso" }
#     ]
#   }
# }
```

--------------------------------

### GraphQL API Query Author with Books (cURL)

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Example using cURL to query a specific author and their books from the GraphQL API. This demonstrates parameterized queries, a powerful feature for fetching specific data relationships from the backend.

```bash
# Query specific author with their books
curl -X POST http://localhost:4000/ \
  -H "Content-Type: application/json" \
  -d '{ 
    "query": "query($name: String) { author(name: $name) { name books { title } } }", 
    "variables": { "name": "Ann Leckie" } 
  }'

# Expected response:
# {
#   "data": {
#     "author": {
#       "name": "Ann Leckie",
#       "books": [
#         { "title": "Ancillary Justice" },
#         { "title": "The Raven Tower" }
#       ]
#     }
#   }
# }
```

--------------------------------

### Linting with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Describes how to run ESLint for code quality checks across the entire monorepo. It provides commands for linting all files and for linting with auto-fixing capabilities.

```bash
# Lint all files
yarn lint

# Lint and auto-fix issues
yarn lint --fix

# Expected output (if no errors):
# ✨ All files passed linting!

# With errors:
# /packages/button/src/index.js
#   12:5  error  Missing semicolon  semi
#
# ✖ 1 problem (1 error, 0 warnings)
```

--------------------------------

### Changesets Workflow for Versioning and Changelogs with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

This outlines the workflow for managing package versions and changelogs using Changesets. It includes commands to create, version, and release packages based on defined changesets.

```bash
# Create a changeset for your changes
yarn changeset

# Follow the prompts:
# 1. Select packages that changed (space to select)
# 2. Choose bump type (major/minor/patch)
# 3. Write a summary of changes

# Version packages based on changesets
yarn changeset version

# Build and publish packages
yarn release

# Example changeset file (.changeset/cool-feature.md):
# ---
# "@monorepo-starter/button": minor
# ---
# 
# Added support for disabled state in Button component
```

--------------------------------

### Apollo React Hooks - useQuery in JavaScript

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Demonstrates how to use the `useQuery` hook from `@apollo/react-hooks` to fetch data in React components. It handles loading, error, and data states, rendering a list of authors.

```javascript
import React from "react";
import { useQuery } from "@apollo/react-hooks";
import { gql } from "apollo-boost";

const getAuthors = gql`
  query {
    authors {
      name
    }
  }
`;

function AuthorList() {
  const { data, loading, error } = useQuery(getAuthors);

  if (loading) return <p>Loading authors...</p>;
  if (error) return <p>Error loading authors: {error.message}</p>;
  if (!data) return null;

  return (
    <div>
      <h2>Authors</h2>
      <ul>
        {data.authors.map(({ name }) => (
          <li key={name}>{name}</li>
        ))}
      </ul>
    </div>
  );
}

export default AuthorList;
```

--------------------------------

### GraphQL API Server Implementation

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

An Apollo Server implementation for a GraphQL API. This server provides endpoints to query authors and their associated books. It defines the data types and resolvers for the API schema, demonstrating backend service integration.

```javascript
import { ApolloServer, gql } from "apollo-server";

// Start the GraphQL server
const typeDefs = gql`
  type Query {
    authors: [Author]
    author(name: String): Author
  }
  type Book {
    title: String
    author: Author
  }
  type Author {
    name: String
    books: [Book]
  }
`;

const resolvers = {
  Query: {
    authors() {
      return authors;
    },
    author(_, { name }) {
      return authors.find(author => author.name === name);
    }
  },
  Author: {
    books(author) {
      return books.filter(book => book.author === author.name);
    }
  }
};

const server = new ApolloServer({
  typeDefs,
  resolvers
});

server.listen().then(({ url }) => {
  console.log(`🚀 Server ready at ${url}`);
});

// Expected output: 🚀 Server ready at http://localhost:4000/
```

--------------------------------

### Running Tests with Bash

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Details the commands to execute Jest tests across all packages in the monorepo. It includes options for running tests normally, in watch mode, and with coverage reporting.

```bash
# Run all tests
yarn test

# Run tests in watch mode
yarn test --watch

# Run tests with coverage
yarn test --coverage

# Expected output:
# PASS packages/button/src/__tests__/index.test.js
# PASS services/graphql-api/src/__tests__/index.test.js
#
# Test Suites: 2 passed, 2 total
# Tests:       5 passed, 5 total
```

--------------------------------

### React Button Component Usage

Source: https://context7.com/thinkmill/monorepo-starter/llms.txt

Demonstrates how to use a reusable React button component. This component allows for customizable styling based on its selection state. It is a common pattern for building interactive UI elements within a monorepo.

```javascript
import React from "react";
import Button from "@monorepo-starter/button";

function App() {
  const [selectedButton, setSelectedButton] = React.useState(null);

  return (
    <div>
      <Button
        isSelected={selectedButton === 'option1'}
        onClick={() => setSelectedButton('option1')}
      >
        Option 1
      </Button>
      <Button
        isSelected={selectedButton === 'option2'}
        onClick={() => setSelectedButton('option2')}
      >
        Option 2
      </Button>
      <Button
        isSelected={selectedButton === 'option3'}
        onClick={() => setSelectedButton('option3')}
      >
        Option 3
      </Button>
    </div>
  );
}

export default App;
```

--------------------------------

### TypeScript Package Configuration

Source: https://github.com/thinkmill/monorepo-starter/blob/master/README.md

Configuration for individual React packages within the monorepo. It extends the React base configuration and specifies the source directory for compilation.

```json
{
  "extends": "../../tsconfig.react.json",
  "include": ["src"]
}
```

--------------------------------

### TypeScript Base Configuration

Source: https://github.com/thinkmill/monorepo-starter/blob/master/README.md

Defines the base TypeScript configuration for a monorepo project, including module resolution, target, and library settings. This serves as a foundation for other tsconfig files.

```json
{
  "compilerOptions": {
    "module": "esnext",
    "target": "es5",
    "moduleResolution": "node",
    "esModuleInterop": true,
    "lib": ["dom", "esnext"],
    "importHelpers": true,
    "rootDir": "./",
    "sourceMap": true,
    "declaration": true,
    "baseUrl": "./"
  }
}
```

--------------------------------

### TypeScript React Configuration

Source: https://github.com/thinkmill/monorepo-starter/blob/master/README.md

Extends the base TypeScript configuration to include React-specific settings, such as JSX compilation. This file should be extended by individual React package configurations.

```json
{
  "extends": "./tsconfig.base.json",
  "compilerOptions": {
    "jsx": "react"
  }
}
```

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