Write a test simulating full end-to-end user interaction flow: click button -> open modal -> type text in modal input -> submit modal form -> verify modal closes and main page updates. Use React Testing Library and Vitest.
Act as a Senior React Engineer. Refactor this legacy React Class Component into a modern React 18 Functional Component with Hooks and TypeScript.
Requirements:
- Replace `componentDidMount`, `componentDidUpdate`, and `componentWillUnmount` with `useEffect`.
- Replace class state with `useState` or `useReducer`.
- Preserve exact existing props interface and functional logic.
[INSERT CLASS COMPONENT HERE]
Analyze this 500-line monolithic React component. Break it down into modular, single-responsibility sub-components in separate code blocks. Export typed interfaces for each new child component's props.
[INSERT MONOLITHIC COMPONENT HERE]
Refactor the following React application structure from React Context/Providers to a lightweight Zustand store. Remove wrapper Context Providers from the tree while retaining identical application state functionality.
[INSERT CONTEXT CODE HERE]
Update the provided React 16 component codebase to align with modern React 18/19 patterns. Upgrade DOM render methods, replace deprecated lifecycle hooks, apply strict null checks, and optimize state batching updates.
[INSERT LEGACY CODE HERE]
Write a production-grade React Error Boundary class component in TypeScript.
Requirements:
- Catch rendering errors anywhere in child component tree.
- Log caught errors to an external monitoring service (e.g., Sentry mock function).
- Display customized fallback UI with retry button allowing users to trigger component re-render without full page refresh.
Identify the memory leak bug in the following React component. Provide fixed TypeScript code that includes proper cleanup subscriptions, clear intervals/timers, and AbortController abort actions.
[INSERT BUGGY COMPONENT HERE]
The following component throws a "Text content does not match server-rendered HTML" hydration mismatch error in Next.js. Explain why this issue happens (e.g., `localStorage`, `window` checks, dates) and fix the component cleanly using a custom `useIsMounted` hook or safe standard React 18 layout effect.
[INSERT SSR CODE HERE]
Explain and fix the stale closure bug present inside this custom hook's `setInterval` / `useCallback` loop. Ensure updated state values are correctly captured across re-renders without causing infinite re-render loops.
[INSERT BUGGY HOOK HERE]
Fix the React browser console warning: "A component is changing an uncontrolled input to be controlled". Refactor the form handling code to ensure initial state values are always defined string primitives.
[INSERT FORM CODE HERE]
Write a fully accessible Accordion UI component in React and TypeScript.
Requirements:
- Implement appropriate ARIA attributes: `aria-expanded`, `aria-controls`, `aria-disabled`, `role="region"`.
- Keyboard interaction support: Arrow Up, Arrow Down, Home, End keys move focus across accordion headers.
- Space and Enter keys toggle expanded states.
Create an accessible Dropdown action menu component in React.
Requirements:
- Open menu on Click or Enter key focus.
- Full keyboard navigation over menu items using Arrow keys.
- Close on 'Escape' key press or click away, returning focus cleanly to trigger button.
Write a `ThemeProvider` context and dynamic theme toggle button component in React.
Requirements:
- Toggle between 'light' and 'dark' mode.
- Respect operating system default settings (`prefers-color-scheme`).
- Update root HTML `class` or CSS variables without causing layout flash on initial screen load.
Write a custom React hook `useAnnouncer` in TypeScript that dynamically appends live screen reader text messages to an internal visually hidden `aria-live="polite"` DOM element. Useful for alerting screen reader users of background notifications and filter updates.
Avatar: Professional, authoritative male avatar.
Voice: Clear, confident, informative tone.
Backgrounds: Professional photos of offices, common areas, exterior, and location map.
Script:
(Scene 1: Exterior of Commercial Building)
"Good day. I'm here to present an exceptional commercial opportunity at [Property Address], a prime location for your business's next chapter. Situated in the vibrant [Business District/Area Name], this property offers unparalleled visibility and accessibility."
(Scene 2: Interior Office Space - open plan)
"Step into these versatile commercial spaces, designed to foster productivity and collaboration. This [e.g., 5,000 sq ft] unit features [mention open-plan layouts, natural light, modern finishes, flexible partitioning options], ready to be customized to your specific needs."
(Scene 3: Common Areas/Amenities - conference room, lounge)
"Enhance your team's experience with superior building amenities, including [mention features like state-of-the-art conference rooms, comfortable lounge areas, high-speed internet infrastructure, ample parking, security]. We provide an environment where your business can thrive."
(Scene 4: Location Map/Local Infrastructure)
"Strategically positioned within [Business District/Area Name], this location offers immediate access to [mention major highways, public transportation hubs, nearby corporate parks, client base, retail amenities]. Proximity to [major city/hub] further boosts its appeal."
(Scene 5: Key Business Benefits)
"Investing in this property means investing in growth. Benefit from [mention specific advantages like high foot traffic, established business community, competitive lease terms, potential for expansion, tax incentives]. This is more than an office; it’s a strategic asset."
(Scene 6: Call to Action with avatar)
"Seize this remarkable opportunity to elevate your business presence. To discuss lease or purchase options, or to arrange a comprehensive tour, please reach out to [Your Name/Agency Name] at [Phone Number] or visit [Your Commercial Real Estate Website URL]. We are prepared to facilitate your success."
/imagine prompt: A flat minimalist vector logo of a fox head using negative space design, modern outline artwork, forest green and crisp white color palette, simple geometric shapes, isolated on a plain white background, corporate brand style, no shadows, no noise --ar 1:1 --v 6.0
Role: Executive Assistant.
Task: Summarize the following project updates into a 3-bullet-point executive digest for the CEO.
Updates Raw Text:
"{{Project_Updates}}"
Rules:
- Max 3 bullet points total.
- Bold key metrics or blockers.
- Exclude minor routine activities.
- Professional, concise tone.
Role: Sales Development Representative.
Task: Draft a personalized, 4-sentence reply to a prospect who requested a product demo.
Prospect Form Data:
Name: {{Lead_Name}}
Company: {{Company_Name}}
Industry: {{Industry}}
Primary Goal: {{Primary_Goal}}
Structure:
Sentence 1: Express enthusiasm for helping {{Company_Name}} achieve {{Primary_Goal}}.
Sentence 2: Mention a relevant benefit specifically for the {{Industry}} sector.
Sentence 3: Provide a calendar booking link.
Sentence 4: Short, low-friction closing question.
Role: Customer Retention Manager.
Task: Draft an empathetic, solution-oriented email response to an unhappy customer.
Complaint Details:
Customer Name: {{Customer_Name}}
Issue Description: {{Issue_Description}}
Guidelines:
- Acknowledge the issue immediately with sincere empathy without admitting legal liability.
- State the direct step being taken to resolve the issue.
- Offer a compensation credit of $25 if appropriate.
- Keep the tone calm, professional, and reassuring.
Role: Automated Inbox Assistant.
Task: Evaluate an email received while the account owner is out of office.
Email Text:
"{{Email_Text}}"
Rule:
If the email contains urgent escalation keywords (e.g., "outage", "system down", "contract cancellation", "urgent deadline"), draft a referral email pointing to [email protected]. Otherwise, generate a standard OOO response indicating return on {{Return_Date}}. Output only the final draft email text.