# @jridgewell/sourcemap-codec@1.5.5 security report (npm)

- Verdict: **No issues** (risk level: safe)
- Scanned: 2026-10-04T16:06:34.000Z
- Files reviewed: 6
- Findings: no findings
- Report: https://security.togoder.click/npm/@jridgewell/sourcemap-codec@1.5.5
- Source: Togoder Security (https://security.togoder.click), AI source-code review

## Summary

Togoder Security scanned the npm package @jridgewell/sourcemap-codec@1.5.5 on Oct 4, 2026. An AI review of 6 source files produced no findings. No malicious behavior, install-time payloads, credential theft or exfiltration were identified.

## Findings

No findings.

## Files reviewed

- `dist/sourcemap-codec.mjs` (safe): No malicious patterns detected; the code is a legitimate VLQ sourcemap encoder/decoder with no network, filesystem, process, or dynamic execution activity.
- `dist/sourcemap-codec.umd.js` (safe): No malicious patterns detected in the sourcemap-codec UMD bundle; it is a standard VLQ/base64 source map encoder/decoder with no network, filesystem, process, or dynamic execution behavior.
- `src/scopes.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/sourcemap-codec.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/strings.ts` (safe): No malicious patterns detected; the code is a standard string serialization utility with no network, filesystem, process, or dynamic code execution behavior.
- `src/vlq.ts` (safe): This is a benign Base64 VLQ (Variable Length Quantity) encoding/decoding utility commonly used in source maps, with no malicious patterns detected.

## Version ranges

None of the 2 scanned versions of @jridgewell/sourcemap-codec are flagged high or critical. The latest scanned version, 1.6.0, is clean. Only versions we have scanned are listed; unscanned versions between them are not covered.

- 1.5.5 – 1.6.0 (`>=1.5.5 <=1.6.0`): clean

## Scanned versions

- [1.6.0](https://security.togoder.click/npm/@jridgewell/sourcemap-codec@1.6.0): safe, 2026-10-06T14:11:13.000Z
- [1.5.5](https://security.togoder.click/npm/@jridgewell/sourcemap-codec@1.5.5): safe, 2026-10-04T16:06:34.000Z

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