"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: Error Handling and Loading States" }), "\n", _jsx(_components.p, { children: "Follow these step-by-step instructions to build a resilient news feed application that demonstrates advanced error handling patterns and professional loading states. This exercise will reinforce the error handling concepts you learned in the lesson and guide you through creating a production-ready React application that gracefully handles failures." }), "\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: "Error Boundaries" }), ": You'll implement React's component-level error handling system to catch JavaScript errors and prevent entire application crashes. This demonstrates how professional applications isolate failures and maintain functionality."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Advanced Loading States" }), ": You'll create skeleton screens and progressive loading patterns that improve perceived performance and keep users engaged during data fetching operations."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Retry Logic with Exponential Backoff" }), ": You'll implement intelligent retry mechanisms that automatically recover from temporary failures without overwhelming failing systems."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "User Experience Patterns" }), ": You'll design error messages and loading feedback that build user trust through clear communication and actionable recovery options."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Resilient Component Architecture" }), ": You'll combine all error handling patterns into a cohesive system that provides comprehensive coverage for real-world failure scenarios."] }), "\n", _jsx(_components.h2, { children: "The Challenge" }), "\n", _jsx(_components.p, { children: "Create a sophisticated news feed application that demonstrates resilient React patterns:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "A news feed with skeleton loading screens and error boundaries" }), "\n", _jsx(_components.li, { children: "Intelligent retry mechanisms with exponential backoff for failed requests" }), "\n", _jsx(_components.li, { children: "Professional error messages with clear recovery options" }), "\n", _jsx(_components.li, { children: "Multiple error scenarios (network errors, server errors, timeout issues)" }), "\n", _jsx(_components.li, { children: "Progressive loading states that improve perceived performance" }), "\n", _jsx(_components.li, { children: "Component-level error isolation that prevents application crashes" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Success Criteria:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "✅ News feed displays skeleton screens during initial loading" }), "\n", _jsx(_components.li, { children: "✅ Error boundaries catch component crashes without affecting the entire app" }), "\n", _jsx(_components.li, { children: "✅ Retry logic automatically recovers from temporary network failures" }), "\n", _jsx(_components.li, { children: "✅ Error messages provide clear, user-friendly feedback with recovery options" }), "\n", _jsx(_components.li, { children: "✅ Loading states are contextual and informative throughout the application" }), "\n", _jsx(_components.li, { children: "✅ Component uses professional error handling patterns and resilience strategies" }), "\n", _jsx(_components.li, { children: "✅ Application remains functional even when individual components fail" }), "\n", _jsx(_components.li, { children: "✅ Smooth user experience with immediate feedback for all interactions" }), "\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 resilient news feed 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", _jsxs(_components.li, { children: ["Error Boundary class components with ", _jsx(_components.code, { children: "componentDidCatch" }), " and ", _jsx(_components.code, { children: "getDerivedStateFromError" })] }), "\n", _jsx(_components.li, { children: "Functional components with hooks for state management and async operations" }), "\n", _jsx(_components.li, { children: "Advanced loading states with skeleton screens and progress indicators" }), "\n", _jsx(_components.li, { children: "Retry logic with exponential backoff algorithms" }), "\n", _jsx(_components.li, { children: "Professional error message design with user-friendly language" }), "\n", _jsx(_components.li, { children: "Component composition and separation of concerns" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Conceptual Hints:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Think about different types of errors (network, server, timeout) and how to handle each" }), "\n", _jsx(_components.li, { children: "Consider how to provide immediate user feedback during loading and error states" }), "\n", _jsx(_components.li, { children: "Remember that error boundaries only catch certain types of errors (not async errors)" }), "\n", _jsx(_components.li, { children: "Use try/catch blocks for async operations and error boundaries for component crashes" }), "\n", _jsx(_components.li, { children: "Design error messages that help users understand what happened and what to do next" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Simulated API Pattern with Error Scenarios:" }) }), "\n", _jsx(_components.pre, { className: "language-javascript", children: _jsxs(_components.code, { className: "language-javascript code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "fetchNewsData" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword", children: "async" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: ["forceError ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword null nil", children: "null" })] }), _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: "2", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Simulate realistic network delay" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token keyword", children: "new" }), " ", _jsx(_components.span, { className: "token class-name", children: "Promise" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "resolve" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token function", children: "setTimeout" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "resolve", _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token number", children: "2000" }), _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 comment", children: "// Simulate different error scenarios for learning" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "6", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " errorScenarios ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), _jsx(_components.span, { className: "token string", children: "'network'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'server'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'timeout'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'success'" }), _jsx(_components.span, { className: "token punctuation", children: "]" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " scenario ", _jsx(_components.span, { className: "token operator", children: "=" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [" forceError ", _jsx(_components.span, { className: "token operator", children: "||" }), " errorScenarios", _jsx(_components.span, { className: "token punctuation", children: "[" }), _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "floor" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "random" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token operator", children: "*" }), " ", _jsx(_components.span, { className: "token number", children: "4" }), _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: "9", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'network'" }), _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 keyword", children: "const" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'Unable to connect to news service'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'NETWORK_ERROR'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " error", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "15", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "16", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'server'" }), _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 keyword", children: "const" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'News service is temporarily unavailable'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "18", children: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'SERVER_ERROR'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "19", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " error", _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: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "21", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "22", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'timeout'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "23", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'Request timed out'" }), _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: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'TIMEOUT_ERROR'" }), _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: "throw" }), " error", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "26", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "27", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "28", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Return mock news data on success" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "29", 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: "30", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "31", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "1" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "32", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'React Error Boundaries Improve App Reliability'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "33", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'New study shows 40% reduction in user-reported crashes'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "34", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Technology'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "35", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'3 min read'" }), _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: "}" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "37", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "38", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "39", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Loading States Psychology: Why Skeleton Screens Work'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "40", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "41", children: [" ", _jsx(_components.span, { className: "token string", children: "'Research reveals how loading patterns affect user perception'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "42", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'UX Design'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "43", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'5 min read'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "44", 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: "45", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "46", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "3" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "47", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Exponential Backoff Prevents Server Overload'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "48", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "49", children: [" ", _jsx(_components.span, { className: "token string", children: "'Smart retry strategies reduce infrastructure costs by 60%'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "50", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Engineering'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "51", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'4 min read'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "52", 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: "53", 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: "54", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\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 React 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 React concept in detail, follow these steps:" }), "\n", _jsx(_components.h3, { children: "Step 1: Create the Error Boundary Component" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "ErrorBoundary.js" }), " and implement React's error boundary pattern for component-level error handling."] }), "\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"] }), _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: "class" }), " ", _jsx(_components.span, { className: "token class-name", children: "ErrorBoundary" }), " ", _jsx(_components.span, { className: "token keyword", children: "extends" }), " ", _jsxs(_components.span, { className: "token class-name", children: ["React", _jsx(_components.span, { className: "token punctuation", children: "." }), "Component"] }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "4", children: [" ", _jsx(_components.span, { className: "token function", children: "constructor" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "props" }), _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: "super" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "props", _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 comment", children: "// Initialize state to track error information" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsx(_components.span, { className: "token keyword", children: "this" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "state" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "hasError" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: 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_jsxs(_components.span, { className: "code-line line-number", line: "11", 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: "12", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "13", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Update state when an error occurs during rendering" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [" ", _jsx(_components.span, { className: "token keyword", children: "static" }), " ", _jsx(_components.span, { className: "token function", children: 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className: "token punctuation", children: "," }), " error", _jsx(_components.span, { className: "token punctuation", children: "," }), " errorInfo", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "30", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "31", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "32", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Provide a way to recover from errors" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "33", children: [" ", _jsx(_components.span, { className: "token function-variable function", children: "handleRetry" }), " ", 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_jsx(_components.span, { className: "token literal-property property", children: "hasError" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token boolean", children: "false" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "36", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "error" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token keyword null nil", children: "null" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "37", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "errorInfo" }), _jsx(_components.span, { className: "token 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[_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: "48", 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 plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "49", children: _jsx(_components.span, { className: "token plain-text", children: " This section encountered an unexpected error, but\n" }) }), _jsx(_components.span, { className: "code-line line-number", line: "50", children: _jsx(_components.span, { className: "token plain-text", children: " the rest of the app is still working.\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "51", 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: "52", 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: "<" }), "button"] }), "\n"] })] }), _jsx(_components.span, { 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"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: "\"" }), "retry-button", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsxs(_components.span, { className: "code-line line-number", line: "55", children: [_jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "56", children: _jsx(_components.span, { className: "token plain-text", children: " Try Again\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "57", 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: "58", 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: "59", 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: "60", 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: "61", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "62", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "63", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Render children normally when no error" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "64", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token keyword", children: "this" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "props" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "children" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "65", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "66", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "67", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "68", 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: "ErrorBoundary" }), _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: "class ErrorBoundary extends React.Component" }), " creates a class component (required for error boundaries)"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "getDerivedStateFromError" }), " is called during rendering to update state when errors occur"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "componentDidCatch" }), " is called after an error occurs and allows side effects like logging"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "handleRetry" }), " provides users with a way to recover from errors by resetting the error boundary"] }), "\n", _jsx(_components.li, { children: "Conditional rendering shows either the error UI or normal children based on error state" }), "\n", _jsx(_components.li, { children: "Error boundaries catch JavaScript errors in child components and prevent app crashes" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates React's error boundary pattern for component-level resilience and graceful error handling."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your error boundary component! It's ready to catch errors, but we need to add components that might fail."] }), "\n", _jsx(_components.h3, { children: "Step 2: Create the News Skeleton Loading Component" }), "\n", _jsx(_components.p, { children: "Add a skeleton screen component that provides immediate visual feedback during loading states." }), "\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"] }), _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: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "NewsSkeleton" }) }), _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: "4", 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: "5", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "news-skeleton", _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: "6", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-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: "<" }), "div"] }), " ", _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: "\"" }), "skeleton-title", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _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: "<" }), "div"] }), " ", _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: "\"" }), "skeleton-subtitle", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "10", 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: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), _jsx(_components.span, { className: "token comment", children: "/* Create multiple skeleton articles */" }), _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: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), _jsx(_components.span, { className: "token punctuation", children: "[" }), _jsx(_components.span, { className: "token number", children: "1" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token number", children: "3" }), _jsx(_components.span, { className: "token punctuation", children: "]" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "map" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "index" }), " ", _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: "13", 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: "key" }), _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: "{" }), "index", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _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: "\"" }), "skeleton-article", _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: "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: "<" }), "div"] }), " ", _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: "\"" }), "skeleton-content", _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: "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: "<" }), "div"] }), " ", _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: "\"" }), "skeleton-article-title", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "16", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-text", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "17", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-text short", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "18", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-meta", _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: "19", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-category", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "20", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "skeleton-read-time", _jsx(_components.span, { className: "token punctuation", 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: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "21", 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: "22", 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: "23", 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: "24", children: [" ", _jsx(_components.span, { className: "token punctuation", 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: "25", 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: "26", 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: "27", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "28", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "29", 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: "NewsSkeleton" }), _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: "function NewsSkeleton()" }), " creates a functional component for loading state display"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "{[1, 2, 3].map(index => (...))}" }), " creates multiple skeleton articles to simulate real content structure"] }), "\n", _jsx(_components.li, { children: "Each skeleton element matches the size and position of actual content elements" }), "\n", _jsx(_components.li, { children: "CSS classes provide styling hooks for skeleton animations and appearance" }), "\n", _jsx(_components.li, { children: "The component provides immediate visual feedback that content is loading" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates advanced loading state patterns that improve perceived performance and user experience."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your skeleton loading screen! The placeholder elements show users what type of content is coming."] }), "\n", _jsx(_components.h3, { children: "Step 3: Create the Error Message Component" }), "\n", _jsx(_components.p, { children: "Add a sophisticated error message component that provides user-friendly feedback and recovery options." }), "\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"] }), _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: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ErrorMessage" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: [_jsx(_components.span, { className: "token punctuation", children: "{" }), " error", _jsx(_components.span, { className: "token punctuation", children: "," }), " onRetry", _jsx(_components.span, { className: "token punctuation", children: "," }), " retryCount ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token number", children: "0" }), " ", _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: "4", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Convert technical errors into user-friendly messages" }), "\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 function-variable function", children: "getErrorInfo" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token parameter", children: "error" }), " ", _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: "6", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "switch" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "error", _jsx(_components.span, { className: "token operator", children: "?." }), "type", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsx(_components.span, { className: "token keyword", children: "case" }), " ", _jsx(_components.span, { className: "token string", children: "'NETWORK_ERROR'" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", 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: "9", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Connection Problem'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "message" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "11", children: [" ", _jsx(_components.span, { className: "token string", children: "'Unable to connect to the news service. Please check your internet connection.'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "icon" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'🌐'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "suggestions" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token string", children: "'Check your internet connection'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [" ", _jsx(_components.span, { className: "token string", children: "'Try refreshing the page'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "16", children: [" ", _jsx(_components.span, { className: "token string", children: "'Wait a moment and try again'" }), _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: "]" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "18", 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: "19", children: [" ", _jsx(_components.span, { className: "token keyword", children: "case" }), " ", _jsx(_components.span, { className: "token string", children: "'SERVER_ERROR'" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "20", 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: "21", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Service Temporarily Unavailable'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "22", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "message" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "23", children: [" ", _jsx(_components.span, { className: "token string", children: "'The news service is experiencing high demand. Please try again in a moment.'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "24", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "icon" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", 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 literal-property property", children: "suggestions" }), _jsx(_components.span, { className: "token operator", 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 string", children: "'Wait a few minutes and try again'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "27", children: [" ", _jsx(_components.span, { className: "token string", children: "'Check our status page for updates'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "28", children: [" ", _jsx(_components.span, { className: "token string", children: "'Try again later'" }), _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: "]" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "30", 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: "31", children: [" ", _jsx(_components.span, { className: "token keyword", children: "case" }), " ", _jsx(_components.span, { className: "token string", children: "'TIMEOUT_ERROR'" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "32", 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: "33", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Request Timed Out'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "34", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "message" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "35", children: [" ", _jsx(_components.span, { className: "token string", children: "'The request took too long to complete. This might be due to a slow connection.'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "36", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "icon" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'⏱️'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "37", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "suggestions" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "38", children: [" ", _jsx(_components.span, { className: "token string", children: "'Check your connection speed'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "39", children: [" ", _jsx(_components.span, { className: "token string", children: "'Try again with a better connection'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "40", children: [" ", _jsx(_components.span, { className: "token string", children: "'Wait and retry'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "41", 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: "42", 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: "43", children: [" ", _jsx(_components.span, { className: "token keyword module", children: "default" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "44", 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: "45", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Something Went Wrong'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "46", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "message" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "47", children: [" ", _jsx(_components.span, { className: "token string", children: "'We encountered an unexpected problem loading the news.'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "48", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "icon" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'❌'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "49", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "suggestions" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "50", children: [" ", _jsx(_components.span, { className: "token string", children: "'Try refreshing the page'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "51", children: [" ", _jsx(_components.span, { className: "token string", children: "'Check back in a few minutes'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "52", children: [" ", _jsx(_components.span, { className: "token string", children: "'Contact support if the problem persists'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "53", 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: "54", 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: "55", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "56", 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: "57", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "58", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " errorInfo ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "getErrorInfo" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "error", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "59", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "60", 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: "61", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "error-message", _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: "62", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "error-content", _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: "63", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "error-icon", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "errorInfo", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "icon" }), _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: "64", 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 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: "\"" }), "error-title", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "errorInfo", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "title" }), _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: "65", 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 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: "\"" }), "error-description", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token punctuation", 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children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "ul"] }), _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: "74", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "errorInfo", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "suggestions" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "map" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: ["suggestion", _jsx(_components.span, { className: "token punctuation", children: "," }), " index"] }), _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: "75", children: [" ", _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "li"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "key" }), _jsxs(_components.span, { className: "token script language-javascript", 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_jsx(_components.span, { className: "code-line line-number", line: "79", children: _jsx(_components.span, { className: "token plain-text", children: "\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "80", 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: "<" }), "button"] }), " ", _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: "{" }), "onRetry", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _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: "\"" }), "retry-button", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "81", children: _jsx(_components.span, { className: "token plain-text", children: " Try Again\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "82", 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: "83", 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: "84", 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, { 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children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "function ErrorMessage({ error, onRetry, retryCount = 0 })" }), " accepts props for error information and retry handling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "getErrorInfo" }), " function converts technical error types into user-friendly messages"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "switch (error?.type)" }), " handles different error scenarios with appropriate messaging"] }), "\n", _jsx(_components.li, { children: "Each error type provides specific guidance and recovery suggestions" }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "retryCount" }), " display shows users the retry progress and builds confidence"] }), "\n", _jsx(_components.li, { children: "Professional error message design builds user trust through clear communication" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates professional error message patterns that guide users through failure scenarios with clear, actionable feedback."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your error message component! It provides helpful guidance for different error scenarios."] }), "\n", _jsx(_components.h3, { children: "Step 4: Create the News List Component" }), "\n", _jsx(_components.p, { children: "Add a component that displays the actual news articles with proper structure and styling." }), "\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"] 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_jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), "articles ", _jsx(_components.span, { className: "token operator", children: "||" }), " articles", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "length" }), " ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token number", children: "0" }), _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: "<" }), "div"] }), " ", _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: "\"" }), "empty-state", _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: "<" }), "div"] }), " ", _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: "\"" }), "empty-content", _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: "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: "<" }), "h3"] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "📰 No News Available" }), _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: "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: "<" }), "p"] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "There are no articles to display right now." }), _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: "10", 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: "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: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "12", 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: "13", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "14", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "15", 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: "16", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "news-list", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", 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" }), ") improve accessibility and SEO"] }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates proper data display patterns with empty state handling and semantic HTML structure."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your news list component! It displays articles in a clean, readable format."] }), "\n", _jsx(_components.h3, { children: "Step 5: Create the Main News App with Resilient Patterns" }), "\n", _jsxs(_components.p, { children: ["Now create the main ", _jsx(_components.code, { children: "NewsApp.js" }), " component that integrates all resilience patterns with sophisticated error handling and retry logic."] }), "\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: "{" 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[_jsx(_components.span, { className: "token comment", children: "// Simulated API with multiple error scenarios" }), "\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: "fetchNewsData" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword", children: "async" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: ["forceError ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword null nil", children: "null" })] }), _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 comment", children: "// Simulate realistic network delay" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token keyword", children: "new" }), " ", _jsx(_components.span, { className: "token class-name", children: "Promise" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "resolve" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token function", children: "setTimeout" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "resolve", _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token number", children: "2000" }), _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: "11", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Simulate different error scenarios for learning" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " errorScenarios ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), _jsx(_components.span, { className: "token string", children: "'network'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'server'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'timeout'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token string", children: "'success'" }), _jsx(_components.span, { className: "token punctuation", children: "]" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " scenario ", _jsx(_components.span, { className: "token operator", children: "=" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [" forceError ", _jsx(_components.span, { className: "token operator", children: "||" }), " errorScenarios", _jsx(_components.span, { className: "token punctuation", children: "[" }), _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "floor" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "random" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token operator", children: "*" }), " ", _jsx(_components.span, { className: "token number", children: "4" }), _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: "16", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "17", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'network'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "18", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'Unable to connect to news service'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "19", children: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'NETWORK_ERROR'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "20", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " error", _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 control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'server'" }), _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" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'News service is temporarily unavailable'" }), _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: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'SERVER_ERROR'" }), _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" }), " error", _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"] }), _jsx(_components.span, { className: "code-line line-number", line: "28", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "29", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "scenario ", _jsx(_components.span, { className: "token operator", children: "===" }), " ", _jsx(_components.span, { className: "token string", children: "'timeout'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "30", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " error ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _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: "'Request timed out'" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "31", children: [" error", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'TIMEOUT_ERROR'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "32", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " error", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "33", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "34", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "35", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Return mock news data on success" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "36", 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: "37", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "38", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "1" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "39", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'React Error Boundaries Improve App Reliability'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "40", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'New study shows 40% reduction in user-reported crashes'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "41", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Technology'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "42", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'3 min read'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "43", 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: "44", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "45", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "46", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Loading States Psychology: Why Skeleton Screens Work'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "47", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "48", children: [" ", _jsx(_components.span, { className: "token string", children: "'Research reveals how loading patterns affect user perception'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "49", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'UX Design'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "50", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'5 min read'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "51", 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: "52", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "53", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "3" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "54", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "title" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Exponential Backoff Prevents Server Overload'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "55", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "summary" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "56", children: [" ", _jsx(_components.span, { className: "token string", children: "'Smart retry strategies reduce infrastructure costs by 60%'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "57", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "category" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'Engineering'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "58", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "readTime" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "'4 min read'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "59", 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: "60", 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: "61", 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: "62", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "63", 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: "NewsApp" }) }), _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: "64", children: [" ", _jsx(_components.span, { className: "token comment", children: "// State management for all aspects of resilience" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "65", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "articles", _jsx(_components.span, { className: "token punctuation", children: "," }), " setArticles", _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 punctuation", 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: "66", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "loading", _jsx(_components.span, { className: "token punctuation", children: "," }), " setLoading", _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"] }), _jsxs(_components.span, { className: "code-line line-number", line: "67", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "error", _jsx(_components.span, { className: "token punctuation", children: "," }), " setError", _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 keyword null nil", children: "null" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "68", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "retryCount", _jsx(_components.span, { className: "token punctuation", children: "," }), " setRetryCount", _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 number", children: "0" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "69", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "70", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Exponential backoff retry logic" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "71", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "fetchWithRetry" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword", children: "async" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: ["maxRetries ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token number", children: "3" })] }), _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: "72", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "for" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token keyword", children: "let" }), " attempt ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token number", children: "0" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), " attempt ", _jsx(_components.span, { className: "token operator", children: "<=" }), " maxRetries", _jsx(_components.span, { className: "token punctuation", children: ";" }), " attempt", _jsx(_components.span, { className: "token operator", 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: "73", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "try" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "74", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " data ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token function", children: "fetchNewsData" }), _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: "75", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " data", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "76", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "catch" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "err", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "77", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "attempt ", _jsx(_components.span, { className: "token operator", children: "===" }), " maxRetries", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "78", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "throw" }), " err", _jsx(_components.span, { className: "token punctuation", children: ";" }), " ", _jsx(_components.span, { className: "token comment", children: "// Give up after max retries" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "79", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "80", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "81", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Calculate exponential backoff delay" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "82", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " delay ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "min" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "1000" }), " ", _jsx(_components.span, { className: "token operator", children: "*" }), " ", _jsx(_components.span, { className: "token known-class-name class-name", children: "Math" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "pow" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " attempt", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token number", children: "5000" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "83", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token keyword", children: "new" }), " ", _jsx(_components.span, { className: "token class-name", children: "Promise" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "resolve" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token function", children: "setTimeout" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "resolve", _jsx(_components.span, { className: "token punctuation", children: "," }), " delay", _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: "84", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "85", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "86", 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: "87", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "88", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Main data fetching function with comprehensive error handling" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "89", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "fetchNews" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword", children: "async" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsxs(_components.span, { className: "token parameter", children: ["isRetry ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token boolean", children: "false" })] }), _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: "90", children: [" ", _jsx(_components.span, { className: "token function", children: "setLoading" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "true" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "91", children: [" ", _jsx(_components.span, { className: "token function", children: "setError" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token keyword null nil", children: "null" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "92", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "93", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "try" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "94", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " data ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token function", children: "fetchWithRetry" }), _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: "95", children: [" ", _jsx(_components.span, { className: "token function", children: "setArticles" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "data", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "96", children: [" ", _jsx(_components.span, { className: "token function", children: "setRetryCount" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "0" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), " ", _jsx(_components.span, { className: "token comment", children: "// Reset retry count on success" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "97", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "catch" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "err", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "98", children: [" ", _jsx(_components.span, { className: "token function", children: "setError" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "err", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "99", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "isRetry", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "100", children: [" ", _jsx(_components.span, { className: "token function", children: "setRetryCount" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "prev" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " prev ", _jsx(_components.span, { className: "token operator", children: "+" }), " ", _jsx(_components.span, { className: "token number", children: "1" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "101", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "102", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "finally" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "103", children: [" ", _jsx(_components.span, { className: "token function", children: "setLoading" }), _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"] }), _jsxs(_components.span, { className: "code-line line-number", line: "104", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "105", 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: "106", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "107", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Load news on component mount" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "108", children: [" ", _jsx(_components.span, { className: "token function", children: "useEffect" }), _jsx(_components.span, { className: "token punctuation", 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: "109", children: [" ", _jsx(_components.span, { className: "token function", children: "fetchNews" }), _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: "110", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), _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: "111", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "112", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Manual retry handler" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "113", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "handleRetry" }), " ", _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: "114", children: [" ", _jsx(_components.span, { className: "token function", children: "fetchNews" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "true" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "115", 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: "116", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "117", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Force different error scenarios for testing" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "118", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "handleForceError" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token keyword", children: "async" }), " ", _jsx(_components.span, { className: "token parameter", children: "errorType" }), " ", _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: "119", children: [" ", _jsx(_components.span, { className: "token function", children: "setLoading" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "true" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "120", children: [" ", _jsx(_components.span, { className: "token function", children: "setError" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token keyword null nil", children: "null" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "121", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "122", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "try" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "123", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "await" }), " ", _jsx(_components.span, { className: "token function", children: "fetchNewsData" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "errorType", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "124", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "catch" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "err", _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "125", children: [" ", _jsx(_components.span, { className: "token function", children: "setError" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "err", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "126", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "finally" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "127", children: [" ", _jsx(_components.span, { className: "token function", children: "setLoading" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", 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}), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "185", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "186", children: _jsx(_components.span, { className: "token plain-text", children: "\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "187", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsx(_components.span, { className: "token punctuation", children: "{" }), _jsx(_components.span, { className: "token operator", children: "!" }), "loading ", _jsx(_components.span, { className: "token operator", children: "&&" }), " ", _jsx(_components.span, { className: "token operator", children: "!" }), "error ", _jsx(_components.span, { className: "token operator", 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: "NewsList" })] }), " ", _jsx(_components.span, { className: "token attr-name", children: "articles" }), _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: "{" }), "articles", _jsx(_components.span, { className: "token punctuation", 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: "188", 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: "189", 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: "190", 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: "191", 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: "192", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "193", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "194", 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: "NewsApp" }), _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 [articles, setArticles] = useState([])" }), " manages the news data state"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const [loading, setLoading] = useState(false)" }), " tracks loading state for user feedback"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const [error, setError] = useState(null)" }), " manages error state and error information"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const [retryCount, setRetryCount] = useState(0)" }), " tracks retry attempts for user display"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "fetchWithRetry" }), " implements exponential backoff retry logic with progressive delays"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "useEffect(() => { fetchNews(); }, [])" }), " loads news data when the component mounts"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "handleForceError" }), " allows testing different error scenarios for learning purposes"] }), "\n", _jsx(_components.li, { children: "Conditional rendering shows appropriate UI based on current application state" }), "\n", _jsx(_components.li, { children: "Error boundary wraps the entire component to catch any unexpected crashes" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates comprehensive resilient component architecture with integrated error handling, retry logic, and professional user experience patterns."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your complete resilient news app! Try the different error scenario buttons to see how each error type is handled."] }), "\n", _jsx(_components.h3, { children: "Step 6: Update the App Component" }), "\n", _jsxs(_components.p, { children: ["Finally, update your ", _jsx(_components.code, { children: "App.js" }), " file to use the resilient NewsApp component."] }), "\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: "NewsApp" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'./NewsApp'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token string", children: "'./styles.css'" }), _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", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "App" }) }), _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 control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", 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, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "App", _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: "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: "NewsApp" })] }), " ", _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: "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: "import NewsApp from './NewsApp'" }), " imports your resilient news application component"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "import './styles.css'" }), " imports the CSS file for professional styling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "" }), " renders your complete resilient application"] }), "\n", _jsx(_components.li, { children: "The App component serves as the root component that renders the news application" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates React's component composition pattern and how to organize resilient applications."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your complete resilient news application! Test the different error scenarios and observe how the app handles each failure gracefully."] }), "\n", _jsx(_components.h2, { children: "Congratulations!" }), "\n", _jsx(_components.p, { children: "You've successfully built a production-ready React application with comprehensive error handling and resilient patterns! You've applied advanced concepts that power every reliable, professional web application:" }), "\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: "Error Boundaries" }), ": Implemented component-level error handling that prevents application crashes"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Advanced Loading States" }), ": Created skeleton screens that improve perceived performance"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Exponential Backoff Retry Logic" }), ": Built intelligent retry mechanisms that recover from temporary failures"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Professional Error Messages" }), ": Designed user-friendly error communication with clear recovery options"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Resilient Component Architecture" }), ": Integrated all error handling patterns into a cohesive system"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "State Management for Resilience" }), ": Coordinated multiple state variables for comprehensive error handling"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "User Experience Patterns" }), ": Built trust through transparent communication and reliable functionality"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Real-World Applications:" }) }), "\n", _jsx(_components.p, { children: "This resilient news feed demonstrates patterns used in every professional React application:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Social Media Platforms" }), ": Error boundaries prevent feed crashes, retry logic recovers from failed post loads"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "E-commerce Applications" }), ": Skeleton screens improve shopping experience, error handling prevents cart loss"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Financial Applications" }), ": Resilient patterns ensure transaction reliability and user data protection"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Dashboard Applications" }), ": Error boundaries isolate widget failures, retry logic maintains data freshness"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Communication Apps" }), ": Professional error handling maintains user trust during network issues"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "What You've Built:" }) }), "\n", _jsx(_components.p, { children: "Your resilient news application showcases enterprise-grade error handling:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Component Isolation" }), ": Error boundaries prevent individual component failures from crashing the entire app"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Intelligent Recovery" }), ": Exponential backoff retry logic automatically recovers from temporary network issues"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Professional Communication" }), ": Error messages guide users through problems with clear, actionable feedback"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Advanced Loading States" }), ": Skeleton screens provide immediate feedback and improve perceived performance"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Comprehensive Coverage" }), ": Multiple layers of error handling provide complete protection against failures"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Professional Development Patterns:" }) }), "\n", _jsx(_components.p, { children: "You've learned industry-standard React practices used in production applications:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Error Boundary Implementation" }), ": Professional component-level error handling with fallback UI"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Retry Logic with Exponential Backoff" }), ": Smart retry strategies that avoid overwhelming failing systems"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "User-Centered Error Design" }), ": Error messages that build trust through clear communication"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Loading State Psychology" }), ": Advanced loading patterns that improve user perception of performance"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Resilient Architecture" }), ": Comprehensive error handling that maintains functionality during failures"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Technical Achievements:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Multi-Layer Error Handling" }), ": Error boundaries for component crashes, try/catch for async operations"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Smart Retry Algorithms" }), ": Exponential backoff with maximum delay caps and retry count tracking"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Professional User Experience" }), ": Loading states, error messages, and recovery options that build user confidence"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Component Composition" }), ": Clean separation of concerns with focused, reusable components"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "State Management Excellence" }), ": Coordinated state updates for complex async operations with error handling"] }), "\n"] }), "\n", _jsx(_components.p, { children: "You're now ready to build production-ready React applications that handle real-world complexity gracefully! The resilient patterns you've learned - error boundaries, retry logic, advanced loading states, and professional error communication - are the foundation of every reliable application serving millions of users." }), "\n", _jsx(_components.p, { children: "Every senior React developer uses these exact patterns daily. You've mastered the fundamentals that separate amateur projects from professional applications that users can trust and rely on." }), "\n", _jsx(_components.p, { children: "Your journey into building unbreakable React applications has begun!" })] }); } function MDXContent(props = {}) { const {wrapper: MDXLayout} = { ..._provideComponents(), ...props.components }; return MDXLayout ? _jsx(MDXLayout, { ...props, children: _jsx(_createMdxContent, { ...props }) }) : _createMdxContent(props); } return { default: MDXContent };