
Introducing React Native Doctor Find performance and security bugs in your mobile app Run via CLI and fix with agents. Fully open source npx react-doctor@latest
The Hook
“(No spoken dialogue — High-energy audio riser peaks at 0:01, followed by a sub-bass drop/impact. Driving synth bassline at 120 BPM begins.)”
Problem Agitation
“(No spoken dialogue — Evolving synth pads and subtle percussive elements build tension. A significant audio riser builds from 0:08 to 0:09, culminating in a powerful sub-bass impact.)”
Product Reveal
“(No spoken dialogue — The driving synth bassline continues with dynamic sound effects emphasizing build-up and release.)”
Call to Action
“(No spoken dialogue — The music reaches a triumphant peak with a final sub-bass impact and celebratory sound design.)”
Synthesizable in Remotion · key components of the cli-devtool-launch-template template.
Text appears character by character in a monospace font, simulating a command-line interface. Lines of code or issues scroll dynamically.
Use Remotion's <Sequence> and <AbsoluteFill> for layout. Implement character-by-character text reveal with `interpolate` for opacity and `delay` for each character. For scrolling, use `useCurrentFrame` and `spring` to animate `transform: translateY` on a container of text lines.
Specific UI elements on a mobile phone screen are highlighted with a red outline, then transition to a green outline as issues are resolved.
Overlay SVG shapes (rectangles, circles) with `stroke` and `stroke-width` properties. Animate `stroke` color using `interpolateColor` and `stroke-dasharray` for a 'drawing' effect. Use `spring` for subtle scaling or pulsing on highlight activation.
A horizontal bar fills from left to right, changing color from red to green, accompanied by a numerical score update and an emoji transition.
Create a `<View>` for the bar's background and another for the fill. Animate the `width` of the fill `<View>` using `interpolate` or `spring`. Use `interpolateColor` for the background color transition. Animate the numerical score with `useCurrentFrame` and `interpolate` for smooth counting. Emoji changes can be handled by conditional rendering based on the score.
Purpose. Immediately establish the core problem: buggy, slow React Native apps.
Execution. A CLI command initiates a scan, revealing a cascade of critical issues on both the terminal and a live mobile app UI.
Purpose. Showcase the depth and breadth of the product's diagnostic capabilities.
Execution. A scrolling list of diverse performance and security bugs, with a 'Critical' score indicating the severity.
Purpose. Demonstrate the product's ability to automatically fix complex issues.
Execution. An AI agent is invoked via CLI, and the list of issues rapidly transforms into 'fixed' statuses, with the score improving dramatically.
Purpose. Conclude with a clear call to action and a sense of achievement.
Execution. A full-screen progress bar reaches 100% 'Great', accompanied by a happy emoji, confetti, and the product's URL.
Objective
A new CLI tool, 'TypeGuard', that automatically refactors JavaScript to TypeScript, improving type safety and reducing errors.How the recipe adapts
The TerminalCodeReveal primitive would show 'npx typeguard@latest' followed by a list of 'Untyped Function' or 'Any Usage' warnings. The MobileUIHighlight would adapt to highlight specific code blocks in an IDE view. The DynamicProgressBar would track 'Type Safety Score' from 'Poor' to 'Excellent', with the emoji transitioning from a confused face to a confident one. The celebratory confetti would mark 100% type safety.Scene durations (4 scenes, 17.8s)
Key Remotion components

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Agentic CLI for coding, building apps, and automating workflows.