tscircuit@0.0.3044
**Design circuit boards with TypeScript and React.**
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe browser bundle initializes runtime analytics by default outside localhost and reports activity and errors using an embedding-domain or anonymous identity. The source provides a disable flag but no clear user-facing disclosure, so this is warning-level telemetry rather than evidence of credential theft or malicious exfiltration.
Static reason
No blocking static signals were detected.
Trigger
Loading the browser bundle in a browser on a non-localhost hostname, unless telemetry is disabled.
Impact
Usage and error information may be sent to the package publisher’s analytics service without clear disclosure to the user.
Mechanism
The bundle initializes PostHog at postpig.tscircuit.com and uses an embedding-domain or anonymous-ID identity for activity and error reporting.
AI rationale
The browser bundle initializes runtime analytics by default outside localhost and reports activity and errors using an embedding-domain or anonymous identity. The source provides a disable flag but no clear user-facing disclosure, so this is warning-level telemetry rather than evidence of credential theft or malicious exfiltration.
Evidence
dist/browser.min.jscli.mjs
Network endpoints1
postpig.tscircuit.com
Decision evidence
public snapshotAI called this Suspicious at 86.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The browser bundle initializes PostHog analytics on non-localhost browser pages by default, unless TSCIRCUIT_TELEMETRY_DISABLED is set.
- The analytics identity includes the embedding domain or a randomly generated anonymous ID, and runtime activity and error data can be reported.
- The CLI selects the shipped dist/browser.min.js bundle for tsci dev when no standalone path is already configured.
Evidence against
- The package manifest declares no install lifecycle hooks.
- The CLI launcher sets a version and browser-bundle path, then imports @tscircuit/cli; no credential collection or unrelated host contact is evident in that launcher.
- The package’s normal main entry is dist/index.js, while the browser bundle is a separate export.
Behavioral surface
EnvironmentVarsFilesystem
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
3 flaggeddist/webworker.min.jsView file
•path = dist/webworker.min.js
kind = oversized_source_file
sizeBytes = 18899533
magicHex = [redacted]
Medium
Oversized Source File
Package contains source files above the normal full-analysis size ceiling.
dist/webworker.min.jsView on unpkgcli.mjsView file
14// Expose the runframe + eval bundle shipped by this tscircuit version (the one
// that provides the `tsci` binary) so `tsci dev` can use it when the project has
// no local tscircuit installed. The CLI prefers a project-local tscircuit over
// this, and an explicit RUNFRAME_STANDALONE_FILE_PATH over both.
if (!process.env.TSCIRCUIT_GLOBAL_STANDALONE_FILE_PATH) {
const browserBundlePath = join(
dirname(fileURLToPath(import.meta.url)),
"dist",
"browser.min.js",
);
if (existsSync(browserBundlePath)) {
process.env.TSCIRCUIT_GLOBAL_STANDALONE_FILE_PATH = browserBundlePath;
Medium
Ai Review Evidence
The CLI selects the shipped dist/browser.min.js bundle for tsci dev when no standalone path is already configured.
cli.mjsView on unpkg · L14Findings
5 Medium4 Low
MediumEnvironment Vars
MediumOversized Source Filedist/webworker.min.js
MediumStructural Risk Force Deep Review
MediumAi Review Evidencecli.mjs
MediumAi Review Evidencepackage.json
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to tscircuit@0.0.3044.
See all versions of tscircuit for other recorded verdicts.
- Review the evidence and your use of tscircuit@0.0.3044 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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