lasTest
Built this over the weekend so I won't break prod.
Visual testing CLI with 4 generation modes: AI-powered, Template, MCP-validated, or Browser Recording. Compares live vs dev environments. Rough edges, but it works. Built it for myself, sharing because you might need it too.
npx @dexilion/lastest init
╔═══════════════════════════════════════════════════════════════════════════╗ ║ /\_/\ █████████████████████████████████████████████████████╗ ║ ║ ( o.o ) ╚════════════════════════██╔═════════════════════════╝ ║ ║ > ^ < |\_/| ██╗ █████╗ ███████╗ ██║ ███████╗███████╗████████╗ ║ ║ /| |\ ( o.o ) ██║ ██╔══██╗██╔════╝ ██║ ██╔════╝██╔════╝╚══██╔══╝ ║ ║ (_| |_) > ^ < ██║ ███████║███████╗ ██║ █████╗ ███████╗ ██║ ║ ║ | | / \ ██║ ██╔══██║╚════██║ ██║ ██╔══╝ ╚════██║ ██║ ║ ║ |_| /_______\ ███████╗██║ ██║███████║ ██║ ███████╗███████║ ██║ ║ ║ ╚══════╝╚═╝ ╚═╝╚══════╝ ╚═╝ ╚══════╝╚══════╝ ╚═╝ ║ ║ ║ ║ Automated Visual Testing ║ ║ made by Dexilion ║ ║ dexilion.com ║ ║ v0.3.0 ║ ╚═══════════════════════════════════════════════════════════════════════════╝
See It In Action
The Problem
We use AI coding tools heavily (mostly Copilot, Claude). One Saturday, an AI-generated UI change broke a site.
Built this over the weekend so we can have better QA without investing in it a lot more time. Rough edges, but it works. Made it free and open source because others probably have the same problem.
What It Does Well
Actually Fast
30 seconds from install to report. Not 30 minutes.
Run npx @dexilion/lastest init and you're done.
4 Test Generation Modes
AI Mode: Uses Claude Pro or Copilot (no extra costs).
Template Mode: Simple screenshots (free, no AI).
MCP Mode: Validated selectors (bulletproof).
Recording Mode: Record in browser (full control).
Zero Config
Scans your codebase automatically. Supports Next.js, React Router, Vue Router, static sites. Just point it at your URLs.
Good Enough Reports
HTML with side-by-side diffs. Could be prettier, but they work. Shows you what broke so you can fix it.
Free Forever
MIT license. No usage limits. No freemium bait-and-switch. Good enough for my projects, might be good enough for yours.
Multi-Viewport Testing
Test desktop, tablet, and mobile viewports simultaneously. Generates separate screenshots for each screen size.
What It Doesn't Do (Yet)
This isn't enterprise-grade yet. It's a tool I built for myself that I'm sharing. It has rough edges.
- ❌ Enterprise features
- ❌ Advanced test customization (PRs welcome!)
- ❌ Multiple baselines or complex branching
- ❌ Team collaboration features
- ❌ Sometimes the AI generates wonky tests
- ❌ Error messages could be better
It's a weekend project that solves one problem: catch visual regressions before users do.
Good enough for side projects. Your mileage may vary.
How It Works
Run One Command
npx @dexilion/lastest init — that's it! Choose your test generation mode
(AI, Template, MCP, or Recording), configure your URLs and viewports.
Generate Tests Your Way
AI Mode: Scans routes, AI generates Playwright tests.
Template: Simple screenshot tests (no AI).
MCP: AI + real-time validation.
Recording: Record interactions in browser.
Get Visual Diffs
Tests run against live and dev environments across all viewports, capturing screenshots and performing pixel-perfect comparisons. View results in tabbed HTML reports with step-by-step execution details.
CLI Interface
Beautiful terminal experience with interactive prompts and real-time progress tracking
Interactive setup wizard with AI provider selection
Test execution with real-time results and summary
Live test execution with detailed progress tracking
Interactive HTML Reports
Beautiful, tabbed reports with visual comparisons, test results, and step-by-step execution details
Test results overview with pass/fail status for each route
Side-by-side step-by-step execution comparison
Detailed visual comparison with pixel difference tracking
Pick Your AI Provider
Works with what you already have. No extra costs.
Claude Pro/Max
Included with your Claude Pro or Max subscription
- CLI authentication
- Unlimited usage within plan
- One-time global setup
npm install -g @anthropic-ai/claude-code
claude login
npx @dexilion/lastest init --ai claude-subscription
GitHub Copilot
Included with your Copilot subscription
- CLI authentication
- Pro, Business, or Enterprise
- Requires Node.js 22+
npm install -g @github/copilot
copilot
npx @dexilion/lastest init --ai copilot-subscription
What It Supports
Automatically detects routes from common frameworks:
Try It Out
Weekend project that solves a real problem. Free, open-source, rough edges included.
Built by a dev, for devs. Good enough for side projects. Let me know if you try it.