# string.prototype.includes@2.0.1 security report (npm)

- Verdict: **Needs review** (risk level: medium)
- Scanned: 2026-10-06T14:24:31.000Z
- Files reviewed: 5
- Findings: 1 medium severity finding
- Report: https://security.togoder.click/npm/string.prototype.includes
- Source: Togoder Security (https://security.togoder.click), AI source-code review

## Summary

Togoder Security scanned the npm package string.prototype.includes@2.0.1 on Oct 6, 2026. An AI review of 5 source files produced 1 medium severity finding. The overall verdict is medium: the findings flag risky but common patterns (dynamic code, unsafe defaults, broad file or network access) rather than confirmed malware.

## Findings

### [medium] Dynamic module loading / import-time side effect

Finding ID: `NPS-76A9D1E46D57`

File: `auto.js:5`

The file immediately requires './shim' and invokes it on import. This executes code from an external module at load time. While the current file itself is a thin wrapper for the 'includes' polyfill, the behavior depends entirely on the contents of the './shim' module, which is not provided for inspection. Import-time side effects from an unreviewed dependency are a potential vector for hidden malicious behavior.

## Files reviewed

- `auto.js` (medium): The file is a minimal wrapper that executes an external './shim' module at import time; it is not inherently malicious, but its safety cannot be fully verified without inspecting the shim it loads.
- `implementation.js` (safe): Cleared by Jev triage; no further analysis needed
- `index.js` (safe): No malicious patterns detected; the file is a standard polyfill wrapper for Array.prototype.includes with no network, filesystem, process, or dynamic execution behavior.
- `polyfill.js` (safe): No malicious patterns detected
- `shim.js` (safe): This is a legitimate ES6 String.prototype.includes polyfill shim with no malicious patterns detected.

AI analysis is guidance, not a guarantee. Methodology: https://security.togoder.click/methodology