use react-qr-barcode-scanner

[bordalix]

let's test this please.

Summary by CodeRabbit

• New Features

  • Improved QR and barcode scanning functionality by integrating a new scanner component for a more reliable and streamlined experience.

• Refactor

  • Simplified the scanner interface and scanning flow for easier and more intuitive use.

• Style

  • Enhanced the appearance of video elements in the scanner with rounded corners and centered alignment.

[coderabbitai]

Walkthrough

A new dependency, react-qr-barcode-scanner, was added to the project. The Scanner component was refactored to use this third-party barcode scanner, replacing the custom camera and canvas logic with event-driven callbacks. A minor CSS rule was introduced to style the video element with rounded corners and center alignment.

Changes

Cohort / File(s)	Change Summary
Dependency Update package.json	Added the react-qr-barcode-scanner package as a new dependency.
Scanner Component Refactor src/components/Scanner.tsx	Refactored to remove manual camera/canvas logic and use the BarcodeScanner component. Updated props, scanning flow, and error handling to be event-driven.
Video Styling src/index.css	Added a CSS rule to style the video element with a border radius and centered alignment.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Scanner Component
    participant BarcodeScanner (3rd Party)

    User->>Scanner Component: Opens scanner
    Scanner Component->>BarcodeScanner (3rd Party): Renders BarcodeScanner
    BarcodeScanner (3rd Party)-->>Scanner Component: onUpdate (scan success)
    Scanner Component->>Scanner Component: setData, stop scanner, clear error
    BarcodeScanner (3rd Party)-->>Scanner Component: onError (scan error)
    Scanner Component->>Scanner Component: setError, stop scanner
    User->>Scanner Component: Closes scanner
    Scanner Component->>BarcodeScanner (3rd Party): Stop stream, call close callback

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Note

⚡️ Unit Test Generation is now available in beta!

Learn more here, or try it out under "Finishing Touches" below.

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 4809c84 and f3a0481.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (3)

• package.json (1 hunks)
• src/components/Scanner.tsx (1 hunks)
• src/index.css (1 hunks)

🧰 Additional context used

🧬 Code Graph Analysis (1)

src/components/Scanner.tsx (2)

src/components/Content.tsx (1)

• Content (9-16)

src/components/Padded.tsx (1)

• Padded (7-14)

🔇 Additional comments (7)

package.json (1)

27-27: Dependency version and security status verified

• package.json (line 27): "react-qr-barcode-scanner": "^2.1.8"
• 2.1.8 is the latest stable release, published last month.
• No known vulnerabilities in Snyk’s database.
• Maintenance appears inactive (no new releases in 12 months, 21 open issues, 9 open PRs).

Consider evaluating a more actively maintained QR-scanner package (e.g., react-qrcode-scanner) to reduce long-term risk.

src/index.css (1)

132-135: LGTM! Clean styling for the scanner video element.

The CSS rule properly styles the video element used by the BarcodeScanner component with rounded corners and center alignment, maintaining consistency with the app's design.

src/components/Scanner.tsx (5)

3-7: LGTM! Import changes align with the refactoring.

The new imports properly support the refactored scanner implementation using the third-party library and improved component structure.

---

9-14: LGTM! Interface properly supports error handling.

The updated ScannerProps interface correctly includes the setError prop needed for the new error handling pattern, with appropriate type definitions.

---

16-17: LGTM! Clean function signature and state management.

The destructured props include the new setError parameter, and the stopStream state effectively manages the scanner lifecycle using appropriate React patterns.

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19-35: LGTM! Well-structured event handlers with proper cleanup.

The event handlers properly manage the scanner lifecycle:

• handleClose stops the stream before closing
• handleError provides error handling with fallback message
• handleUpdate processes scan results and clears error state

Note: The handleUpdate function signature (err, result) follows the callback pattern of the react-qr-barcode-scanner library, which is correct for this implementation.

---

37-57: LGTM! Clean rendering with appropriate scanner configuration.

The component structure uses consistent layout patterns and the BarcodeScanner is properly configured:

• Reasonable 300ms delay and 500x500 dimensions
• Event handlers correctly wired to component callbacks
• stopStream prop provides proper lifecycle control
• Cancel button maintains user control

The refactoring successfully replaces the manual camera implementation with a cleaner, library-based approach.

✨ Finishing Touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch new_scanner

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