Dead code

Detect unused exports, files, types, and dependencies with Knip. A single scan covers both src/ and web/src/.

npm run knip        # full scan — exits non-zero if any dead code is found
npm run knip:fix    # auto-remove unused exports, files, and dependencies, then review the diff

Reading the output

Knip groups findings by category:

Unused dependencies (1)
some-package   package.json

Unused files (1)
src/old-feature.ts

Unused exports (3)
helperFn   function   src/utils.ts:12:17
CONSTANT              src/config.ts:5:14

Unused exported types (2)
OldType   type   src/types.ts:42:13

Work the categories safest-first: unused dependencies → unused files → unused exports/types.

Regression gate

npm run knip exits non-zero on any finding. Run it alongside npm run lint and npm run test to prevent dead code from accumulating. Configuration lives in knip.json; suppression (ignoreDependencies, ignoreBinaries) is the rare exception and each entry has a justifying comment.