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Wish Headless Frontend Error Catcher

Wish Headless Frontend Error Catcher

Wishlist

Status

Status

Type

  • Enhancement for existing platform
  • New standalone tool

New standalone tool

Build a new repository based on this wish proposal:

  • Wishlist proposal: wish-propose-tool
  • Repository Tags:
    • wish-implementation
    • wish-headless-frontend-error-catcher

Related project(s)

Repository Status Developer
- - -

Ownership

Funding

Type

  • 🏆 Grant Funded
  • 💰 Bounty Available
  • 💎 Sponsored
  • 🎁 Accepting Donations
  • 🌱 Looking for Funding
  • ⭐ No Funding Needed

Details

TBD

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Propose Tool

Wishlist

Metadata

  • Tool Name: headless-frontend-error-catcher
  • Author(s): @unameit10000000
  • Start Date: TBD
  • Future repository: headless-frontend-error-catcher

Summary

An open-source, lightweight tool that loads web pages in a headless browser environment and captures all console output (errors, warnings, logs) and detects blank page scenarios. It's designed to identify issues that often go undetected in build processes but appear during runtime.

Motivation

Problem Statement

  • Frontend builds often complete successfully but still contain runtime errors
  • AI-generated dynamic code can break applications in unexpected ways
  • Blank pages (no rendered UI elements) can occur without obvious errors
  • Developers need a simple way to catch all console output without manual browser inspection
  • Current build processes don't always catch runtime issues that appear in the browser

Use Cases

  • Quick validation of web pages after build process
  • Testing dynamic content generated by AI
  • Catching silent failures that result in blank pages
  • Simple API for integration into existing workflows
  • Identifying console errors in CI/CD pipelines

Goals

  • Create a minimal viable tool that accepts a URL/page input
  • Catch ALL errors, warnings, and console output
  • Detect blank pages (no rendered visible UI elements)
  • Return complete console log details
  • Provide a simple API for integration
  • Focus on reliability rather than feature richness

Technical Architecture

System Overview

graph TD
    A[URL Input] --> B[Headless Browser]
    B --> C[Console Output Collector]
    B --> D[Blank Page Detector]
    C --> E[Result Formatter]
    D --> E
    E --> F[API Response]
Loading

Core Components

  • URL/Page Input Handler: Processes incoming requests with target URLs
  • Headless Browser Engine: Based on Puppeteer or Playwright
  • Console Output Collector: Captures all console messages
  • Blank Page Detector: Checks for absence of visible UI elements
  • Result Formatter: Organizes findings for API response

Technical Stack

  • Languages: JavaScript/TypeScript
  • Framework: Puppeteer or Playwright for headless browser
  • API: Simple REST or GraphQL endpoint
  • Infrastructure: Designed to run as a standalone service

Implementation Plan

Phase 1: MVP

  • Basic headless browser setup
  • Console output capture mechanism
  • Blank page detection
  • Simple API endpoint
  • Basic documentation
  • Comprehensive error handling

Project Structure

/
├── src/
│   ├── browser.js       # Headless browser setup
│   ├── collector.js     # Console output collection
│   ├── detector.js      # Blank page detection
│   ├── api.js           # API endpoints
│   └── index.js         # Entry point
├── tests/
│   ├── unit/
│   └── fixtures/        # Test pages
├── docs/
│   └── api.md           # API documentation
└── examples/            # Usage examples

Development Requirements

  • Node.js environment
  • Minimal dependencies
  • Simple testing framework
  • Docker for containerization (optional)

Testing Strategy

  • Unit tests for core components
  • Integration tests with sample web pages
  • Error scenario testing with deliberately broken pages
  • API endpoint testing

Drawbacks

  • Limited to issues that appear in console or as blank pages
  • MVP Won't catch visual or UX issues
  • Possible false positives for loading states
  • Simple approach means less sophisticated analysis

Alternatives

  • Manual browser inspection
  • Existing logging services
  • Full-featured testing frameworks (which may be overkill)
  • One-off custom scripts using headless browsers directly

Deployment Strategy

  • Deployable as a simple Node.js service
  • Docker container for easy deployment
  • Minimal configuration requirements
  • Designed for both local and CI/CD usage

Documentation

  • Simple README with installation and usage instructions
  • API documentation
  • Example configurations
  • Troubleshooting common issues

Unresolved Questions

  • Best headless browser framework to use (Puppeteer vs Playwright)
  • Optimal method for detecting truly blank pages vs loading states
  • Performance considerations for checking multiple pages
  • How to handle authentication for protected pages
  • Best approach for API design (REST vs GraphQL vs RPC)
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