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Playwright Architecture — Explained Simply (Step by Step) Playwright is a powerful framework for automating browsers and running end-to-end tests. Its architecture may look complex at first, but it becomes very easy to understand when we see how a test travels from our code to the actual browser. High-Level Idea From left to right, the data flow looks like this: Your test code (in Java, JS/TS, Python, C#, etc.) 󠀠→ sends commands over a WebSocket 󠀠→ to the Playwright Server (Node.js) 󠀠→ which talks via browser protocols (CDP+) to 󠀠→ real browser engines like Chrome, Firefox, and WebKit. Architecture Diagram (Image) Architecture Diagram (Text Version) ┌────────────────────────────┐ │ Client Libraries │ │ (Java, JS/TS, Python, C#) │ └──────────────┬─────────────┘ │ Test Commands (WebSocket) ▼ ┌────────────────────────┐ │ Playwright Server │ │ (Node.js) ...

Playwright + TypeScript Project Package.json (Explained) If you're setting up end-to-end testing using Playwright with TypeScript , your package.json file becomes the core configuration hub. It defines dependencies, scripts, tooling, and project metadata. Below is a clean, production-ready example — followed by a full explanation. ✅ Example package.json for Playwright + TypeScript { "name": "playwright-ts-demo", "version": "1.0.0", "private": true, "description": "Playwright end-to-end tests using TypeScript", "scripts": { "test": "playwright test", "test:ui": "playwright test --ui", "test:headed": "playwright test --headed", "test:debug": "playwright test --debug", "codegen": "playwright codegen", "show-report": "playwright show-report", ...