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Castov

engine.io

v6.6.11SAFE Risk

The realtime engine behind Socket.IO. Provides the foundation of a bidirectional connection between client and server

A+100/100
Install Command
npm install engine.io
orpnpm add engine.io
Typosquat Defense
Authentic Name

No similarity to known typosquatting targets.

Lifecycle Scripts
Clean Execution

Zero preinstall or postinstall arbitrary execution hooks.

License Type
MIT

Permissive open-source license. Safe for enterprise & proprietary software.

Package Specifications

Unpacked Size
159.2 KB
Dependencies
9
Maintainers
2
Last Published
Sep 24, 2026
View on npmjs.comGitHub Repository

Direct Dependencies (9)

ws ~8.21.0cors ~2.8.5debug ~4.4.1cookie ~0.7.2accepts ~1.3.4@types/ws ^8.5.12@types/cors ^2.8.12@types/node >=10.0.0engine.io-parser ~5.2.1
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Frequently Asked Questions

Is engine.io safe to use in production?
engine.io received a Security Grade of A+ (100/100) with a risk evaluation of SAFE. It contains zero malicious postinstall scripts.
What license does engine.io use?
engine.io is licensed under the MIT license (PERMISSIVE). This is a permissive open-source license suitable for commercial applications.
How do I install engine.io?
Install it via NPM using: npm install engine.io, or via PNPM: pnpm add engine.io, or Yarn: yarn add engine.io.