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. The reviewer saw nothing malicious or risky in this version.
Files reviewed
| File | Verdict | What the reviewer saw |
|---|---|---|
| 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. |
Affected 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.
Full list, including published versions not scanned yet: version ranges API.
Scanned versions of @jridgewell/sourcemap-codec
Frequently asked questions
Is @jridgewell/sourcemap-codec safe to use?
Our AI source review of @jridgewell/sourcemap-codec@1.5.5 found no malicious code: no install-time payloads, credential theft, exfiltration, obfuscated loaders or backdoors.
Does @jridgewell/sourcemap-codec contain malware?
No malware was identified in @jridgewell/sourcemap-codec@1.5.5 when Togoder Security scanned it on Oct 4, 2026. A new version can still introduce malicious code, so scan the exact versions in your lockfile.
How was @jridgewell/sourcemap-codec checked?
Togoder Security downloaded the published npm package and had an AI model read its 6 source files, looking for install scripts, credential access, network exfiltration, obfuscation, backdoors and crypto-wallet theft. The results are cached by file hash and shown here.
How do I scan @jridgewell/sourcemap-codec together with the rest of my dependencies?
Upload your lockfile at https://security.togoder.click/scan or call the API documented at https://security.togoder.click/api-docs. Files that have already been scanned, like the ones in @jridgewell/sourcemap-codec@1.5.5, cost nothing.