"use strict"; const {Fragment: _Fragment, jsx: _jsx, jsxs: _jsxs} = arguments[0]; const {useMDXComponents: _provideComponents} = arguments[0]; function _createMdxContent(props) { const _components = { code: "code", h1: "h1", h2: "h2", h3: "h3", hr: "hr", li: "li", p: "p", pre: "pre", span: "span", strong: "strong", ul: "ul", ..._provideComponents(), ...props.components }; return _jsxs(_Fragment, { children: [_jsx(_components.h1, { children: "Instructions: Context API Fundamentals" }), "\n", _jsx(_components.p, { children: "Follow these step-by-step instructions to build your first React application using Context API. This exercise will reinforce the Context API concepts you learned in the lesson and guide you through creating a professional theme switching system that demonstrates global state management." }), "\n", _jsx(_components.h2, { children: "Concept Reinforcement" }), "\n", _jsx(_components.p, { children: "Before we start coding, let's review the key React concepts you'll be applying in this exercise:" }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Context API Fundamentals" }), ": You'll use ", _jsx(_components.code, { children: "createContext" }), ", ", _jsx(_components.code, { children: "Provider" }), ", and ", _jsx(_components.code, { children: "useContext" }), " to share theme state across multiple components without prop drilling. This demonstrates how React's Context API solves the problem of passing data through intermediate components."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Global State Management" }), ": You'll create a theme provider that manages application-wide state (dark/light mode) and makes it available to any component that needs it, showing how Context API enables clean state architecture."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Component Communication" }), ": You'll see how components can communicate and share data without direct parent-child relationships, demonstrating the power of Context API for component coordination."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Professional Patterns" }), ": You'll organize your code using industry-standard Context API patterns with custom hooks, proper error handling, and clean component separation that matches real-world React development."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "State Immutability" }), ": You'll apply proper state update patterns within the Context API, reinforcing the React principles you learned in previous modules while working with global state."] }), "\n", _jsx(_components.h2, { children: "The Challenge" }), "\n", _jsx(_components.p, { children: "Create a complete theme switching system that demonstrates Context API fundamentals:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "A theme provider that manages dark/light mode state globally" }), "\n", _jsx(_components.li, { children: "A theme toggle button that switches themes instantly" }), "\n", _jsx(_components.li, { children: "Multiple components that automatically adapt to theme changes" }), "\n", _jsx(_components.li, { children: "Professional styling with smooth theme transitions" }), "\n", _jsx(_components.li, { children: "Clean Context API implementation with proper patterns" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Success Criteria:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "✅ Theme provider manages global dark/light mode state" }), "\n", _jsx(_components.li, { children: "✅ Theme toggle button switches themes instantly across all components" }), "\n", _jsx(_components.li, { children: "✅ Multiple components consume theme context and adapt automatically" }), "\n", _jsx(_components.li, { children: "✅ Components use proper Context API patterns with useContext hook" }), "\n", _jsx(_components.li, { children: "✅ Theme provider is organized in separate file with proper imports" }), "\n", _jsx(_components.li, { children: "✅ Custom hook provides clean interface for consuming theme context" }), "\n", _jsx(_components.li, { children: "✅ Professional styling with smooth transitions between themes" }), "\n", _jsx(_components.li, { children: "✅ All components demonstrate Context API best practices" }), "\n"] }), "\n", _jsx(_components.h2, { children: "Independent Learning Opportunity" }), "\n", _jsx(_components.p, { children: "Before looking at the step-by-step guide below, try building this theme system yourself! Use these React concepts you've learned:" }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "React Concepts to Use:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Context API with createContext, Provider, and useContext" }), "\n", _jsx(_components.li, { children: "useState hook for managing theme state within the provider" }), "\n", _jsx(_components.li, { children: "Component composition and proper file organization" }), "\n", _jsx(_components.li, { children: "Custom hooks for encapsulating Context API usage" }), "\n", _jsx(_components.li, { children: "Event handling for theme toggle functionality" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Conceptual Hints:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Think about what data needs to be shared globally (that's your context)" }), "\n", _jsx(_components.li, { children: "Consider which components need theme data and which are just intermediaries" }), "\n", _jsx(_components.li, { children: "Remember that Context API eliminates prop drilling by providing direct access" }), "\n", _jsx(_components.li, { children: "Use a custom hook to encapsulate context usage and provide error handling" }), "\n", _jsx(_components.li, { children: "Theme state can be as simple as a boolean (isDarkMode) with derived values" }), "\n"] }), "\n", _jsx(_components.p, { children: "Try building it yourself first - it's okay if you get stuck! The step-by-step guide below will help you understand each Context API concept as you implement it." }), "\n", _jsx(_components.hr, {}), "\n", _jsx(_components.h2, { children: "Step-by-Step React Implementation Guide" }), "\n", _jsx(_components.p, { children: "If you need help or want to understand each Context API concept in detail, follow these steps:" }), "\n", _jsx(_components.h3, { children: "Step 1: Create the Theme Context" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "ThemeContext.js" }), " and set up the basic Context API structure. This demonstrates how to create a context that can share data across your entire application."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token maybe-class-name", children: "React" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " createContext", _jsx(_components.span, { className: "token punctuation", children: "," }), " useContext", _jsx(_components.span, { className: "token punctuation", children: "," }), " useState ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "2", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: [_jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeContext" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "createContext" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "4", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeProvider" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: [_jsx(_components.span, { className: "token punctuation", children: "{" }), " children ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "6", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "isDarkMode", _jsx(_components.span, { className: "token punctuation", children: "," }), " setIsDarkMode", _jsx(_components.span, { className: "token punctuation", children: "]" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "useState" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "false" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "7", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "toggleTheme" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "9", children: [" ", _jsx(_components.span, { className: "token function", children: "setIsDarkMode" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), "isDarkMode", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "11", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " value ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [" isDarkMode", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "theme" }), _jsx(_components.span, { className: "token operator", children: ":" }), " isDarkMode ", _jsx(_components.span, { className: "token operator", children: "?" }), " ", _jsx(_components.span, { className: "token string", children: "'dark'" }), " ", _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'light'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [" toggleTheme", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "16", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "17", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "18", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "19", children: [" ", _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), _jsx(_components.span, { className: "token class-name", children: "ThemeContext.Provider" })] }), " ", _jsx(_components.span, { className: "token attr-name", children: "value" }), _jsxs(_components.span, { className: "token script language-javascript", children: [_jsx(_components.span, { className: "token script-punctuation punctuation", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "value", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "children", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "20", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "21", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "22", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "23", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: "useTheme" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "24", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " context ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "useContext" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeContext" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "25", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), "context", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "26", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " ", _jsx(_components.span, { className: "token keyword", children: "new" }), " ", _jsx(_components.span, { className: "token class-name", children: "Error" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token string", children: "'useTheme must be used within a ThemeProvider'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "27", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "28", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " context", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "29", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "createContext()" }), " creates a new context object for sharing theme data"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "ThemeProvider" }), " component manages theme state and provides it to child components"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "useState(false)" }), " manages the dark mode state (false = light mode, true = dark mode)"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "toggleTheme" }), " function switches between light and dark modes"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "value" }), " object contains all theme data and functions that components will need"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "ThemeContext.Provider" }), " makes the theme data available to all child components"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "useTheme" }), " custom hook provides a clean interface for consuming theme context"] }), "\n", _jsx(_components.li, { children: "Error handling ensures components can only use theme context within a provider" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates Context API creation and the Provider pattern - establishing a global data source that any component can access without prop drilling."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your theme context set up! The context is ready to provide theme data to any component that needs it."] }), "\n", _jsx(_components.h3, { children: "Step 2: Create the Theme Toggle Component" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "ThemeToggle.js" }), " that uses the theme context to provide a toggle button. This shows how components consume context data and trigger global state changes."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "2", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token punctuation", children: "{" }), " useTheme ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'./ThemeContext'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "3", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "4", children: [_jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeToggle" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " isDarkMode", _jsx(_components.span, { className: "token punctuation", children: "," }), " toggleTheme ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "useTheme" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "6", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [" ", _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "button"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "theme-toggle", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), " ", _jsx(_components.span, { className: "token attr-name", children: "onClick" }), _jsxs(_components.span, { className: "token script language-javascript", children: [_jsx(_components.span, { className: "token script-punctuation punctuation", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "toggleTheme", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "9", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "isDarkMode ", _jsx(_components.span, { className: "token operator", children: "?" }), " ", _jsx(_components.span, { className: "token string", children: "'☀️'" }), " ", _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'🌙'" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "isDarkMode ", _jsx(_components.span, { className: "token operator", children: "?" }), " ", _jsx(_components.span, { className: "token string", children: "'Light Mode'" }), " ", _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Dark Mode'" }), _jsx(_components.span, { className: "token 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_jsxs(_components.span, { className: "code-line line-number", line: "15", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeToggle" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "import { useTheme }" }), " imports our custom hook for accessing theme context"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const { isDarkMode, toggleTheme } = useTheme()" }), " destructures theme data from context"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "onClick={toggleTheme}" }), " connects the button click to the theme switching function"] }), "\n", _jsx(_components.li, { children: "Conditional rendering shows different icons and text based on current theme" }), "\n", _jsx(_components.li, { children: "The component automatically re-renders when theme context changes" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates context consumption with useContext hook - how components can access and modify global state without receiving props."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your theme toggle button! It's connected to the global theme state and ready to switch themes."] }), "\n", _jsx(_components.h3, { children: "Step 3: Create a User Card Component" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "UserCard.js" }), " that demonstrates how multiple components can consume the same context and adapt to theme changes automatically."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "2", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token punctuation", children: "{" }), " useTheme ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'./ThemeContext'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "3", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "4", children: [_jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "UserCard" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: [_jsx(_components.span, { className: "token punctuation", children: "{" }), " name", _jsx(_components.span, { className: "token punctuation", children: "," }), " email", _jsx(_components.span, { className: "token punctuation", children: "," }), " role ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [" ", _jsx(_components.span, { className: "token keyword", 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}), "theme", _jsx(_components.span, { className: "token interpolation-punctuation punctuation", children: "}" })] }), _jsx(_components.span, { className: "token template-punctuation string", children: "`" })] }), _jsx(_components.span, { className: "token punctuation", children: "}" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "9", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "div"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { 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[_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "user-info", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "11", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "h3"] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "name", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "p"] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "email", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: 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"token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "role", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "16", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "17", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "18", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "19", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "UserCard" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const { theme } = useTheme()" }), " gets the current theme string from context"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "className={user-card ${theme}}" }), " applies theme-specific CSS classes"] }), "\n", _jsx(_components.li, { children: "The component receives user data as props (name, email, role) for display" }), "\n", _jsx(_components.li, { children: "Theme styling is handled through CSS classes that change based on context" }), "\n", _jsx(_components.li, { children: "Component automatically updates when theme context changes" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This shows how Context API enables components to respond to global state changes while still receiving specific data through props."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your user card component! It will automatically adapt its styling based on the current theme."] }), "\n", _jsx(_components.h3, { children: "Step 4: Create the Header Component" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "Header.js" }), " that demonstrates how intermediate components don't need to know about theme data, while child components can still access it."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "2", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ThemeToggle" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'./ThemeToggle'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "3", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "4", children: [_jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "Header" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "6", children: [" ", _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "header"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "app-header", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "h1"] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "Context API Theme Demo" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), _jsx(_components.span, { className: "token class-name", children: "ThemeToggle" })] }), " ", _jsx(_components.span, { className: "token punctuation", children: "/>" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "9", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "11", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "12", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "Header" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "Header" }), " component doesn't import or use theme context directly"] }), "\n", _jsxs(_components.li, { children: ["It simply renders the ", _jsx(_components.code, { children: "ThemeToggle" }), " component that does use context"] }), "\n", _jsx(_components.li, { children: "This demonstrates how Context API eliminates prop drilling" }), "\n", _jsx(_components.li, { children: "Intermediate components stay clean and focused on their specific purpose" }), "\n", _jsx(_components.li, { children: "Child components can access global state without parent involvement" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This shows the power of Context API - intermediate components don't need to pass data they don't use, keeping component hierarchies clean and maintainable."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your header component! Notice how it doesn't need any theme-related props but still enables theme switching."] }), "\n", _jsx(_components.h3, { children: "Step 5: Update the App Component" }), "\n", _jsxs(_components.p, { children: ["Now update your ", _jsx(_components.code, { children: "App.js" }), " file to wrap your application with the theme provider and demonstrate the complete Context API pattern."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", 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children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "34", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "35", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "36", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "37", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "App" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "" }), " wraps the entire application to make theme context available everywhere"] }), "\n", _jsxs(_components.li, { children: ["Multiple ", _jsx(_components.code, { children: "UserCard" }), " components demonstrate how context works with component lists"] }), "\n", _jsx(_components.li, { children: "Each component receives its own props while sharing the same theme context" }), "\n", _jsx(_components.li, { children: "The provider pattern ensures all child components can access theme data" }), "\n", _jsx(_components.li, { children: "Clean component composition without any prop drilling for theme data" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates the Provider pattern - wrapping your application to make context available throughout the component tree."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your complete theme system! All components now have access to theme context and will update together when you toggle themes."] }), "\n", _jsx(_components.h3, { children: "Step 6: Add Theme-Aware Body Styling" }), "\n", _jsx(_components.p, { children: "Update your App component to apply theme classes to the document body, demonstrating how Context API can control global styling beyond just component-level changes." }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token maybe-class-name", children: "React" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token punctuation", 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className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "AppContent" }), " component consumes theme context to control global styling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "useEffect" }), " hook applies theme class to document body when theme changes"] }), "\n", _jsxs(_components.li, { children: ["Separating ", _jsx(_components.code, { children: "AppContent" }), " from ", _jsx(_components.code, { children: "App" }), " allows context consumption inside the provider"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "document.body.className = theme" }), " applies global theme styling"] }), "\n", _jsx(_components.li, { children: "This pattern enables theme control beyond just React components" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This shows how Context API can control global application state and styling, not just component-level data."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " and toggle the theme! You'll see the entire application background and global styling change instantly."] }), "\n", _jsx(_components.h3, { children: "Step 7: Add Theme Status Display" }), "\n", _jsx(_components.p, { children: "Let's add a status component that shows the current theme and demonstrates how multiple components can consume the same context independently." }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token comment", children: "// Add this to your AppContent component, inside the main element" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "2", children: [_jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: 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className: "token punctuation", children: "/>" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "27", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), _jsx(_components.span, { className: "token class-name", children: "UserCard" })] }), "\n"] })] }), _jsx(_components.span, { className: "code-line line-number", line: "28", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "name" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "Emily Davis", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "29", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "email" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "emily@example.com", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "30", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "role" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "Product Manager", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsxs(_components.span, { className: "code-line line-number", line: "31", children: [_jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "/>" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "32", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "33", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "34", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "35", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "36", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: ["Multiple components (", _jsx(_components.code, { children: "AppContent" }), ", ", _jsx(_components.code, { children: "ThemeToggle" }), ", ", _jsx(_components.code, { children: "UserCard" }), ") all consume the same context"] }), "\n", _jsx(_components.li, { children: "Each component gets the current theme data automatically when it changes" }), "\n", _jsx(_components.li, { children: "Context API ensures all consumers stay synchronized with the global state" }), "\n", _jsx(_components.li, { children: "Adding new context consumers doesn't require changing existing components" }), "\n", _jsx(_components.li, { children: "This demonstrates the scalability of Context API for global state management" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This shows how Context API enables multiple independent components to consume and react to the same global state changes."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " and test your complete theme system! Notice how the theme status updates instantly when you toggle themes, demonstrating how all context consumers stay synchronized."] }), "\n", _jsx(_components.h2, { children: "Congratulations!" }), "\n", _jsx(_components.p, { children: "You've successfully built your first React application using Context API! You've applied fundamental Context API concepts and professional patterns:" }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "React Concepts Mastered:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Context Creation" }), ": Used createContext to establish a global data channel"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Provider Pattern" }), ": Wrapped your application to make context available everywhere"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Context Consumption" }), ": Used useContext hook to access global state in components"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Custom Hooks" }), ": Created useTheme hook for clean context consumption with error handling"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Global State Management" }), ": Managed application-wide theme state without prop drilling"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Component Communication" }), ": Enabled components to share data without direct relationships"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Real-World Applications:" }) }), "\n", _jsx(_components.p, { children: "This theme system demonstrates patterns you'll use in every professional React application:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Theme Management" }), ": Dark/light mode switching in modern applications"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "User Authentication" }), ": Global user state and login status management"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Language Localization" }), ": Application-wide language and translation management"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Shopping Carts" }), ": Global cart state accessible from any component"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Notification Systems" }), ": Application-wide alert and message management"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "What You've Built:" }) }), "\n", _jsx(_components.p, { children: "Your theme switching system showcases Context API's core strengths:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Eliminated Prop Drilling" }), ": No intermediate components need to pass theme data"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Global State Management" }), ": Theme state is managed centrally and accessed globally"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Automatic Synchronization" }), ": All components update instantly when theme changes"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Professional Patterns" }), ": Clean code organization with custom hooks and error handling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Scalable Architecture" }), ": Easy to add new components that consume theme context"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Professional Development Patterns:" }) }), "\n", _jsx(_components.p, { children: "You've learned industry-standard Context API practices:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Custom Hook Pattern" }), ": Encapsulating context usage with useTheme hook"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Provider Component Pattern" }), ": Dedicated provider components for state management"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Error Handling" }), ": Proper error boundaries for context usage outside providers"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Clean Separation" }), ": Context logic separated from component rendering logic"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Context API Benefits You've Experienced:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Direct Communication" }), ": Components access global state without intermediaries"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Maintainable Code" }), ": Adding new theme-aware components doesn't require changing existing ones"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Performance" }), ": Only components that consume context re-render when it changes"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Developer Experience" }), ": Clean, readable code that's easy to understand and debug"] }), "\n"] }), "\n", _jsx(_components.p, { children: "You're now ready to build sophisticated React applications with advanced state management patterns. Context API is the foundation for:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Complex application architectures with multiple global state concerns" }), "\n", _jsx(_components.li, { children: "Integration with external state management libraries like Redux" }), "\n", _jsx(_components.li, { children: "Building reusable component libraries with configurable behavior" }), "\n", _jsx(_components.li, { children: "Professional React applications with clean, maintainable state management" }), "\n"] }), "\n", _jsx(_components.p, { children: "Every React concept you'll learn builds on these Context API fundamentals you've just mastered. You can now architect React applications that scale from simple theme switching to complex, multi-context state management systems used in production applications worldwide!" })] }); } function MDXContent(props = {}) { const {wrapper: MDXLayout} = { ..._provideComponents(), ...props.components }; return MDXLayout ? _jsx(MDXLayout, { ...props, children: _jsx(_createMdxContent, { ...props }) }) : _createMdxContent(props); } return { default: MDXContent };