Inventory optional runtime behavior
Determine whether the application intentionally uses RunAsNode behavior, Node environment options or command-line inspection features. Include maintenance and support tools in that review: a setting that looks unused in the main UI may be part of an enterprise deployment script.
Record the installed Electron version and targeted platforms. Read the fuse definitions for that release instead of copying an old configuration whose support assumptions are unclear. The desired result is a small explicit feature policy with tests, not the largest possible collection of disabled switches.
Use official packaging integration
Apply settings using the supported Electron fuse tooling or your packager integration. Place the operation after the relevant executable exists and before legitimate code signing. Editing sentinel bytes with a custom search-and-replace script creates a fragile undocumented transformation.
Keep a build record of the intended and observed fuse state. A configuration object in source control does not prove the packaged executable was modified, especially when the packaging pipeline changes directories or copies an earlier cached application later in the job.
Review ASAR controls as a pair
Where the installed Electron and target platform support them, review embedded ASAR integrity validation together with the policy that loads application code only from app.asar. The official fuse reference explains their interaction. Enabling one isolated setting should not become a universal integrity claim.
Check packaging assumptions and expected external resources before applying the policy. Native modules or deliberately unpacked resources may have their own supported arrangement. Test the actual package rather than a development run that uses a loose source directory and bypasses the release code-loading path.
Validate behavior and distribution
Verify that intended launches, background helpers, update flows and administrative tooling continue to work. Add narrowly scoped negative checks for the runtime behaviors you deliberately disabled. A test should show the feature policy took effect without relying on unrelated parser failures.
Sign only after package-time fuse changes, then run native validation for the resulting distribution artifact. Preserve exact output and receipts. Later byte edits can invalidate signing, so do not repair a failed audit by altering the shipped executable in place.
Fuses restrict particular runtime features and can support package integrity. They do not conceal every string, prevent UI observation or prove resistance to AI reconstruction. CloneGuard does not flip fuses automatically or inspect the full ASAR payload; the skill guides you to the supported native workflow and records what was actually checked.
Practical checklist
- List used runtime features and target platforms.
- Verify supported fuse options for the installed release.
- Apply and inspect fuse state before signing.
- Test release code loading, updates and support workflows.
Sources and further reading
Primary references support the technical details. Procedures here are guidance; only explicitly recorded project results describe tests we ran.
Prepared with AI assistance. How this library is produced. Suggest a correction; keep private code and credentials out of public issues.