ledger-live: Skill for Claude Code

Dead-code detection: explicit exports + knip

Dead-code / unused-dependency detection runs on knip. The legacy unimported tool is gone and the dependency checks deny it; legacy libs/* packages that never migrated have no dead-code tooling. The root knip.json holds only the shared rules — a package needs no workspaces entry there, since knip derives its entry files from package.json (main, bin, exports) and its own defaults (entry files).

Why this isn't just "swap the tool"

knip treats everything listed in a package's package.json#exports as an entry point. Most legacy libs/ packages export a ./* wildcard mapped to ./src/*.ts (via the @ledgerhq/source custom condition declared in support/tsconfig/base.json):

"./*": {
  "@ledgerhq/source": "./src/*.ts",
  "import": "./lib-es/*.js",
  "require": "./lib/*.js",
  "default": "./lib/*.js"
}

Because of this wildcard, knip considers every top-level src/*.ts file "used" and cannot detect unused ("zombie") top-level source files. So a package needs to replace the ./* wildcard with explicit, minimal subpath exports that enumerate the package's true public API.

The few libs already pointed at knip (e.g. libs/live-wallet, libs/live-dmk-mobile) still keep the ./* wildcard, so they are only partially migrated — do not copy them as the template.

New package = born migrated

A new package has no consumers, so it should start in the target state:

1. Explicit exports only. Enumerate the real public API; do not add a ./* wildcard. Mirror the . root entry per subpath, keeping the conditions:

   "exports": {
     ".":        { "@ledgerhq/source": "./src/index.ts",  "import": "./lib-es/index.js",  "require": "./lib/index.js",  "default": "./lib/index.js" },
     "./logic":  { "@ledgerhq/source": "./src/logic.ts",  "import": "./lib-es/logic.js",  "require": "./lib/logic.js",  "default": "./lib/logic.js" },
     "./lib-es/*": "./lib-es/*.js",
     "./lib/*": "./lib/*.js",
     "./package.json": "./package.json"
   }
   

2. Use knip — add a script that runs knip scoped to the workspace: pnpm knip --directory <relative-hop-to-root> -W <workspace-path> (--directory is the hop back to the repo root — ../.. for libs/<x>, ../../.. for libs/coin-modules/<x>; -W is the workspace path from root).