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Copy file name to clipboardExpand all lines: posts/gemini-explains-how-hooks-work-with-toast-component.txt
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@@ -36,15 +36,15 @@ This file defines a custom hook called `useToast`. It uses `useContext` to acces
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```javascript
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import { useContext } from 'react';
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import { ToastContext } from '../components/ToastProvider';
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import { ToastContext } from '../components/ToastContext';
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export const useToast = () => {
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return useContext(ToastContext);
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};
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```
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### `src/components/ToastProvider.js`
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This file defines the `ToastProvider` component, which manages the state of the toasts. It uses `useState` to hold the `toasts` array, and provides `addToast` and `removeToast` functions. It also renders the `Toast` components.
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### `src/components/ToastContext.js`
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This file defines the `ToastContext` component, which manages the state of the toasts. It uses `useState` to hold the `toasts` array, and provides `addToast` and `removeToast` functions. It also renders the `Toast` components.
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```javascript
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import React, { createContext, useState, useCallback } from 'react';
The main component of the application. The `ToastProvider` wraps the entire application to make the toast functionality available everywhere.
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The main component of the application. The `ToastContext` wraps the entire application to make the toast functionality available everywhere.
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```javascript
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import React from 'react';
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import { HashRouter as Router } from 'react-router-dom';
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import Layout from './components/Layout';
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import AnimatedRoutes from './components/AnimatedRoutes';
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import { ToastProvider } from './components/ToastProvider';
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import { ToastContext } from './components/ToastContext';
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function App() {
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return (
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<Router>
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<ToastProvider>
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<ToastContext>
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<Layout>
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<AnimatedRoutes />
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</Layout>
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</ToastProvider>
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</ToastContext>
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</Router>
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);
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}
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```javascript
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import { useContext } from 'react';
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import { ToastContext } from '../components/ToastProvider';
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import { ToastContext } from '../components/ToastContext';
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export const useToast = () => {
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return useContext(ToastContext);
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};
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```
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- `useContext(ToastContext)`: This line uses the `useContext` hook to access the data provided by the `ToastContext`. The `ToastContext` is created in `ToastProvider.js`.
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- `useContext(ToastContext)`: This line uses the `useContext` hook to access the data provided by the `ToastContext`. The `ToastContext` is created in `ToastContext.js`.
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- `export const useToast`: This line exports the `useToast` hook so that it can be used in other components.
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This custom hook provides a simple way for any component to access the `addToast` and `removeToast` functions without having to pass them down as props.
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### `src/components/ToastProvider.js`
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### `src/components/ToastContext.js`
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This file defines the `ToastProvider` component, which is responsible for managing the state of the toasts.
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This file defines the `ToastContext` component, which is responsible for managing the state of the toasts.
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```javascript
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import React, { createContext, useState, useCallback } from 'react';
This is the main component of the application. The only change here was to wrap the entire application with the `ToastProvider`.
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This is the main component of the application. The only change here was to wrap the entire application with the `ToastContext`.
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```javascript
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import React from 'react';
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import { HashRouter as Router } from 'react-router-dom';
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import Layout from './components/Layout';
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import AnimatedRoutes from './components/AnimatedRoutes';
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import { ToastProvider } from './components/ToastProvider';
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import { ToastContext } from './components/ToastContext';
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function App() {
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return (
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<Router>
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<ToastProvider>
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<ToastContext>
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<Layout>
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<AnimatedRoutes />
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</Layout>
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</ToastProvider>
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</ToastContext>
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</Router>
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);
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}
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export default App;
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```
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- `<ToastProvider>`: By wrapping the `Layout` component with the `ToastProvider`, we make the `addToast` and `removeToast` functions available to all the components in the application.
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- `<ToastContext>`: By wrapping the `Layout` component with the `ToastContext`, we make the `addToast` and `removeToast` functions available to all the components in the application.
Copy file name to clipboardExpand all lines: posts/react-of-fezcode/001-project-overview.txt
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@@ -37,7 +37,7 @@ The project follows a typical React application structure, with key directories
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## How it Works (High-Level)
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1. **Entry Point (`src/index.js`):** The application starts by rendering the main `App` component into the `index.html` file.
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2. **Main Application (`src/App.js`):** The `App` component sets up client-side routing using `HashRouter`, defines the overall layout, and manages global contexts like the `ToastProvider`.
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2. **Main Application (`src/App.js`):** The `App` component sets up client-side routing using `HashRouter`, defines the overall layout, and manages global contexts like the `ToastContext`.
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3. **Routing (`react-router-dom`):** `AnimatedRoutes` (likely a component that uses `react-router-dom`'s `Routes` and `Route` components) handles mapping URLs to specific page components.
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4. **Content Fetching:** Blog posts and other dynamic content are fetched from `.txt` files located in the `public/` directory. Metadata for these posts is often stored in corresponding `.json` files (e.g., `public/posts/posts.json`). The blog page now includes a search functionality to easily find posts by title or slug.
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5. **Styling (`Tailwind CSS`):** The UI is styled primarily using Tailwind CSS utility classes, with some custom CSS if needed.
Copy file name to clipboardExpand all lines: posts/react-of-fezcode/004-app-js-main-component.txt
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import { HashRouter as Router } from 'react-router-dom';
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import Layout from './components/Layout';
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import AnimatedRoutes from './components/AnimatedRoutes';
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import { ToastProvider } from './components/ToastProvider';
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import { ToastContext } from './components/ToastContext';
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import ScrollToTop from './components/ScrollToTop';
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function App() {
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return (
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<Router>
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<ScrollToTop />
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<ToastProvider>
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<ToastContext>
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<Layout>
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<AnimatedRoutes />
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</Layout>
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</ToastProvider>
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</ToastContext>
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</Router>
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);
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}
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* **`import AnimatedRoutes from './components/AnimatedRoutes';`**: Imports the `AnimatedRoutes` component. This component is responsible for defining the application's routes and likely incorporates animation for page transitions, possibly using a library like `framer-motion`.
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```javascript
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import { ToastProvider } from './components/ToastProvider';
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import { ToastContext } from './components/ToastContext';
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```
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* **`import { ToastProvider } from './components/ToastProvider';`**: Imports the `ToastProvider` component. This component is part of React's Context API pattern. It makes a `toast` (a small, temporary notification) functionality available to all its child components without having to pass props down manually at every level.
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* **`import { ToastContext } from './components/ToastContext';`**: Imports the `ToastContext` component. This component is part of React's Context API pattern. It makes a `toast` (a small, temporary notification) functionality available to all its child components without having to pass props down manually at every level.
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```javascript
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import ScrollToTop from './components/ScrollToTop';
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return (
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<Router>
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<ScrollToTop />
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<ToastProvider>
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<ToastContext>
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<Layout>
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<AnimatedRoutes />
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</Layout>
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</ToastProvider>
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</ToastContext>
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</Router>
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);
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}
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* **`<ScrollToTop />`**: This component is rendered directly inside the `Router`. Its effect (scrolling to top on route change) will apply globally to the application.
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* **`<ToastProvider>`**: This component wraps the `Layout` and `AnimatedRoutes`. This means that any component rendered within the `Layout` or `AnimatedRoutes` will have access to the toast functionality provided by the `ToastProvider` via the `useContext` hook.
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* **`<ToastContext>`**: This component wraps the `Layout` and `AnimatedRoutes`. This means that any component rendered within the `Layout` or `AnimatedRoutes` will have access to the toast functionality provided by the `ToastContext` via the `useContext` hook.
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* **`<Layout>`**: This component defines the common structure (e.g., header, footer, navigation) that will be present on most pages. It wraps the `AnimatedRoutes` component, meaning the routed content will be displayed within this layout.
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## Summary
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`src/App.js` orchestrates the main structure and global functionalities of the application. It sets up routing, provides global context for notifications, and defines the overarching layout, ensuring a consistent user experience across different pages.
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`src/App.js` orchestrates the main structure and global functionalities of the application. It sets up routing, provides global context for notifications, and defines the overarching layout, ensuring a consistent user experience across different pages.
Copy file name to clipboardExpand all lines: posts/react-of-fezcode/008-react-context-usecontext.txt
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## Example: Toast Notification System
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This project uses the Context API to manage and display toast notifications globally. Let's examine `src/components/ToastProvider.js` and `src/hooks/useToast.js`.
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This project uses the Context API to manage and display toast notifications globally. Let's examine `src/components/ToastContext.js` and `src/hooks/useToast.js`.
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### `src/components/ToastProvider.js` (The Provider)
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### `src/components/ToastContext.js` (The Provider)
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```javascript
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import React, { createContext, useState, useCallback } from 'react';
1. **`export const ToastContext = createContext();`**: A Context object named `ToastContext` is created. This object will be used by both the Provider and the Consumer.
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2. **`ToastProvider` Component**: This is a functional component that will wrap parts of your application (as seen in `App.js`).
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2. **`ToastContext` Component**: This is a functional component that will wrap parts of your application (as seen in `App.js`).
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* **`const [toasts, setToasts] = useState([]);`**: Manages the array of active toast notifications using `useState`.
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* **`addToast` and `removeToast` functions**: These functions are responsible for adding new toasts to the `toasts` array and removing them. They are wrapped in `useCallback` to prevent unnecessary re-creations, which is an optimization for performance.
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* **`<ToastContext.Provider value={{ addToast, removeToast }}>`**: This is the core of the Provider. It makes the `addToast` and `removeToast` functions available to any component that consumes `ToastContext` and is rendered within this Provider's tree. The `value` prop is crucial here.
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* **`{children}`**: This renders whatever components are passed as children to the `ToastProvider`. These children (and their descendants) will have access to the context value.
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* **Toast Rendering**: The `ToastProvider` also directly renders the actual `Toast` components based on the `toasts` state, positioning them in the top-right corner of the screen.
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* **`{children}`**: This renders whatever components are passed as children to the `ToastContext`. These children (and their descendants) will have access to the context value.
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* **Toast Rendering**: The `ToastContext` also directly renders the actual `Toast` components based on the `toasts` state, positioning them in the top-right corner of the screen.
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### `src/hooks/useToast.js` (The Consumer Hook)
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```javascript
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import { useContext } from 'react';
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import { ToastContext } from '../components/ToastProvider';
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import { ToastContext } from '../components/ToastContext';
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export const useToast = () => {
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return useContext(ToastContext);
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**Explanation:**
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1. **`import { useContext } from 'react';`**: Imports the `useContext` Hook from React.
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2. **`import { ToastContext } from '../components/ToastProvider';`**: Imports the `ToastContext` object that was created in `ToastProvider.js`.
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2. **`import { ToastContext } from '../components/ToastContext';`**: Imports the `ToastContext` object that was created in `ToastContext.js`.
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3. **`export const useToast = () => { ... };`**: This is a custom hook. Custom hooks are a powerful feature in React that allow you to extract reusable stateful logic from components. This `useToast` hook simplifies consuming the `ToastContext`.
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4. **`return useContext(ToastContext);`**: This line is where the magic happens. When `useContext(ToastContext)` is called, React looks up the component tree for the closest `ToastContext.Provider` and returns its `value` prop. In this case, it returns `{ addToast, removeToast }`.
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## Summary
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The React Context API, combined with the `useContext` hook, provides an elegant solution for managing global state and sharing functions across your component tree, avoiding prop drilling and making your application's architecture cleaner and more maintainable. The toast notification system in this project is a prime example of its effective use.
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The React Context API, combined with the `useContext` hook, provides an elegant solution for managing global state and sharing functions across your component tree, avoiding prop drilling and making your application's architecture cleaner and more maintainable. The toast notification system in this project is a prime example of its effective use.
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