engine.io-client 5.1.2
Client for the realtime Engine
engine.io-client@5.1.2 was published on 2021-06-24. Its manifest declares 9 runtime dependencies and 0 peer requirements. Bundled type declarations are not declared in the inspected metadata. No Node.js engine requirement is declared in this manifest.
All engine.io-client versions · Permanent reference to 5.1.2 · Latest release
Package specifications
| Version | 5.1.2 |
|---|---|
| License declaration | MIT |
| Published | 2021-06-24T06:24:50.847Z |
| Node.js requirement | Not declared |
| Type declarations | Not declared |
| Runtime dependency count | 9 |
| Peer requirement count | 0 |
| Optional dependency count | 0 |
| Minified size | Measurement not available yet |
| Minified + gzip | Measurement not available yet |
| Unpacked distribution size | 241.96 KiB |
| Published file count | 21 |
| Package type | Not declared |
| ES module entry | Not declared |
| Default entry | lib/index.js |
| Side effects declaration | Not declared |
| Direct advisories | 0 |
| Resolved graph dependencies | 10 |
| Repository stars | 63225 |
| Repository forks | 10218 |
Install engine.io-client 5.1.2
npm install engine.io-client@5.1.2 pnpm add engine.io-client@5.1.2 yarn add engine.io-client@5.1.2
Runtime dependencies
- ws ~7.4.2
- debug ~4.3.1
- yeast 0.1.2
- parseqs 0.0.6
- has-cors 1.1.0
- parseuri 0.0.6
- engine.io-parser ~4.0.1
- component-emitter ~1.3.0
- base64-arraybuffer 0.1.4
Peer requirements
- None declared
Optional dependencies
- None declared
Resolved dependency graph
This deps.dev graph describes a generic 64-bit Linux environment, not your application lockfile.
- base64-arraybuffer@0.1.4 — direct
- component-emitter@1.3.1 — direct
- debug@4.3.7 — direct
- engine.io-parser@4.0.3 — direct
- has-cors@1.1.0 — direct
- ms@2.1.3 — indirect
- parseqs@0.0.6 — direct
- parseuri@0.0.6 — direct
- ws@7.4.6 — direct
- yeast@0.1.2 — direct
How to interpret the specifications
Bundlephobia measurements use its standard package build and may exclude peer dependencies. Unpacked npm distribution size includes shipped files and is a different measurement. Module declarations do not prove tree-shaking or runtime compatibility.
Advisories apply to this package version directly; transitive dependencies need separate inspection. Repository signals describe the whole repository and are current observations, including on historical-version pages.
OpenSSF repository checks
Provider assessment: 2026-08-24T00:00:00Z. These are repository checks, not a jsL maintenance score.
| Code-Review | 1/10 — Found 3/30 approved changesets -- score normalized to 1 |
|---|---|
| Maintained | 10/10 — 30 commit(s) and 20 issue activity found in the last 90 days -- score normalized to 10 |
| Security-Policy | 10/10 — security policy file detected |
| Dangerous-Workflow | 10/10 — no dangerous workflow patterns detected |
| CII-Best-Practices | 0/10 — no effort to earn an OpenSSF best practices badge detected |
| Token-Permissions | 9/10 — detected GitHub workflow tokens with excessive permissions |
| Binary-Artifacts | 9/10 — binaries present in source code |
| License | 10/10 — license file detected |
| Fuzzing | 0/10 — project is not fuzzed |
| SAST | 0/10 — SAST tool is not run on all commits -- score normalized to 0 |
| Packaging | 10/10 — packaging workflow detected |
| Pinned-Dependencies | 2/10 — dependency not pinned by hash detected -- score normalized to 2 |
Evidence and freshness
- https://registry.npmjs.org/engine.io-client/5.1.2 — retrieved 2026-10-29T10:28:58.833Z
- https://api.deps.dev/v3/projects/github.com%2Fsocketio%2Fsocket.io — retrieved 2026-10-29T05:09:27.248Z
- https://api.deps.dev/v3/systems/npm/packages/engine.io-client/versions/5.1.2 — retrieved 2026-10-29T10:28:59.352Z
- https://api.deps.dev/v3/systems/npm/packages/engine.io-client/versions/5.1.2:dependencies — retrieved 2026-10-29T10:28:59.419Z