Unleash Flag Usage Companion (VS Code)

Inventories Unleash feature-flag usage across your codebase — naming check, find-all-usages, likely-typo detection. No data leaves your editor.

v0.1, new niche. Not a port from the Gap Hunter Labs IntelliJ- family catalog. Evidence: confirmed total absence of a dedicated Unleash VS Code extension despite Unleash being one of the most-used open-source feature-flag tools — unlike LaunchDarkly and PostHog, which both have one. The contrast makes the gap credible, not just "nobody got to it yet."

What it does

Command: Unleash Flag Usage Companion: Show Flag Inventory — scans .js/.ts/.jsx/.tsx/.py/.java/.go files for isEnabled('flag-name')-shaped calls (JS/TS: unleash.isEnabled, Python: unleash_client.is_enabled, Java: unleash.isEnabled, Go: unleash.IsEnabled) and lists every distinct flag with every file and line it's checked at.
Naming check: flags a name that isn't kebab-case — Unleash's own documentation examples consistently use kebab-case.
Likely-typo detection: flags two differently-spelled names that normalize to the same thing (my-flag vs myFlag) — Unleash treats these as two entirely separate flags, so this is almost always a real bug: two call sites meant to check the same flag are actually checking two flags that never get toggled together.

Diagnostics update live on save of any applicable file.

v0.1 scope, honestly noted: this is a local, offline inventory — whether a flag is still "live"/toggled in your actual Unleash instance needs the Unleash Admin API, which this version doesn't call (no network access, no credentials to configure). A flag with zero remaining usages in your codebase, or one that's been 100% on for months, isn't detected here — that's a real follow-up, not this v0.1.

Privacy

See PRIVACY.md — zero network calls, everything runs against files already in your workspace.

Development

npm install
npm run compile   # or: npm run watch
npm test

To build an installable package without publishing:

npx @vscode/vsce package

License

Apache License 2.0 — see LICENSE.