Principle:Puppeteer Puppeteer Browser Process Management
| Knowledge Sources | |
|---|---|
| Domains | Browser_Management, Process_Management |
| Last Updated | 2026-02-11 23:00 GMT |
Overview
A low-level mechanism for spawning browser processes with configured arguments and managing their lifecycle, independent of the high-level Puppeteer API.
Description
Browser Process Management handles the direct spawning and lifecycle management of browser executables. Unlike PuppeteerNode.launch() (which also establishes protocol connections), this low-level launch function only manages the process itself:
- Spawning the browser with the specified executable and arguments
- Optionally piping browser I/O to the parent process
- Detecting the WebSocket endpoint from browser output
- Handling graceful shutdown and signal forwarding (SIGINT, SIGTERM, SIGHUP)
- Managing the process lifecycle (close, kill)
This is provided by the @puppeteer/browsers package, which can be used independently from puppeteer-core.
Usage
Use this when you need low-level control over browser process management, or when using @puppeteer/browsers independently of the Puppeteer API.
Theoretical Basis
# Process launch pipeline
1. Receive executablePath and args
2. Spawn child process with child_process.spawn()
3. Monitor stdout/stderr for WebSocket endpoint URL
4. Set up signal handlers for graceful shutdown
5. Return Process object with close/kill/waitForLineOutput methods
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Principle
Implementation
Heuristic
Environment