eslint · JoshuaKGoldberg · Jul 15, 2025 · Aug 15, 2025 · Aug 15, 2025 · Aug 15, 2025
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -27,6 +27,9 @@ jobs:
             - name: Lint Files
               run: npm run lint
 
+            - name: Lint Files, Dependencies, & Exports
+              run: npm run lint:unused
+
             - name: Check Formatting
               run: npm run fmt:check
 

@@ -72,7 +72,7 @@ jobs:
             - name: Publish to JSR
               run: |
                   if [ -f "jsr.json" ]; then
-                    npx jsr publish
+                    npx -y jsr publish
                   else
                     echo "No jsr.json file found, skipping JSR publish."
                   fi

diff --git a/knip.json b/knip.json
@@ -0,0 +1,37 @@
+{
+  "$schema": "https://unpkg.com/knip@5/schema.json",
+  "ignore": ["templates/**/*"],
+  "workspaces": {
+    ".": { "entry": ["scripts/*.js", "tools/*.js", ".github/workflows/*.yml"] },
+    "packages/compat": {
+      "ignoreDependencies": ["eslint"],
+      "entry": ["tests/**/*.{cts,js,ts}"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/*.{cts,js,ts}"]
+    },
+    "packages/config-array": {
+      "entry": ["tests/**/*.{cts,js,ts}", "rollup.std__path-config.js"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/**/*.{cts,js,ts}"]
+    },
+    "packages/config-helpers": {
+      "entry": ["tests/**/*.{cts,js,ts}"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/**/*.{cts,js,ts}"]
+    },
+    "packages/core": { "project": ["src/**/*.{cts,js,ts}"] },
+    "packages/mcp": {
+      "entry": ["tests/**/*.{cts,js,ts}"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/**/*.{cts,js,ts}"]
+    },
+    "packages/migrate-config": {
+      "entry": ["src/migrate-config.js", "tests/**/*.{cts,js,ts}"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/*.{cts,js,ts}"]
+    },
+    "packages/object-schema": {
+      "entry": ["tests/**/*.{cts,js,ts}", "src/types.ts"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/**/*.{cts,js,ts}"]
+    },
+    "packages/plugin-kit": {
+      "entry": ["tests/**/*.{cts,js,ts}"],
+      "project": ["src/**/*.{cts,js,ts}", "tests/**/*.{cts,js,ts}"]
+    }
+  }
+}
diff --git a/package.json b/package.json
@@ -10,6 +10,7 @@
     "prepare": "npm run build",
     "lint": "eslint",
     "lint:fix": "eslint --fix",
+    "lint:unused": "knip",
     "fmt": "prettier --write .",
     "fmt:check": "prettier --check .",
     "test:jsr": "npm run test:jsr --workspaces --if-present",
@@ -34,9 +35,11 @@
   "devDependencies": {
     "@eslint/config-helpers": "file:packages/config-helpers",
     "@types/mocha": "^10.0.7",
+    "@types/node": "^24.9.1",
     "c8": "^10.1.3",
     "eslint": "^9.35.0",
     "eslint-config-eslint": "^13.0.0",
+    "knip": "^5.62.0",
     "lint-staged": "^15.2.0",
     "mocha": "^11.5.0",
     "prettier": "^3.4.1",

diff --git a/packages/compat/package.json b/packages/compat/package.json
@@ -27,7 +27,7 @@
   "scripts": {
     "build:cts": "node ../../tools/build-cts.js dist/esm/index.d.ts dist/cjs/index.d.cts",
     "build": "rollup -c && tsc -p tsconfig.esm.json && npm run build:cts",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test"
   },

diff --git a/packages/compat/tsconfig.json b/packages/compat/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.base.json",
   "files": ["src/index.js"],
   "compilerOptions": {
-    "outDir": "dist/esm"
+    "outDir": "dist/esm",
+    "types": ["mocha", "node"]
   }
 }
diff --git a/packages/config-array/package.json b/packages/config-array/package.json
@@ -39,7 +39,7 @@
     "pretest": "npm run build",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "keywords": [

diff --git a/packages/config-array/tsconfig.json b/packages/config-array/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.base.json",
   "files": ["src/index.js"],
   "compilerOptions": {
-    "outDir": "dist/esm"
+    "outDir": "dist/esm",
+    "types": ["mocha"]
   }
 }
diff --git a/packages/config-helpers/package.json b/packages/config-helpers/package.json
@@ -30,7 +30,7 @@
     "build": "rollup -c && npm run build:dedupe-types && tsc -p tsconfig.esm.json && npm run build:cts",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:pnpm": "cd tests/pnpm && pnpm install && pnpm exec tsc",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
@@ -51,7 +51,6 @@
     "@eslint/core": "^0.16.0"
   },
   "devDependencies": {
-    "eslint": "^9.27.0",
     "rollup-plugin-copy": "^3.5.0"
   },
   "engines": {

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -19,7 +19,7 @@
   "scripts": {
     "build:cts": "node -e \"fs.cpSync('dist/esm/types.d.ts', 'dist/cjs/types.d.cts')\"",
     "build": "tsc && npm run build:cts",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "repository": {

diff --git a/packages/migrate-config/tsconfig.json b/packages/migrate-config/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.base.json",
   "files": ["src/migrate-config-cli.js"],
   "compilerOptions": {
-    "outDir": "dist/esm"
+    "outDir": "dist/esm",
+    "types": ["mocha"]
   }
 }
diff --git a/packages/object-schema/package.json b/packages/object-schema/package.json
@@ -30,7 +30,7 @@
     "build": "rollup -c && npm run build:dedupe-types && tsc -p tsconfig.esm.json && npm run build:cts",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "repository": {

diff --git a/packages/object-schema/tsconfig.json b/packages/object-schema/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.base.json",
   "files": ["src/index.js"],
   "compilerOptions": {
-    "outDir": "dist/esm"
+    "outDir": "dist/esm",
+    "types": ["mocha"]
   }
 }
diff --git a/packages/plugin-kit/package.json b/packages/plugin-kit/package.json
@@ -38,7 +38,7 @@
     "pretest": "npm run build",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "keywords": [

diff --git a/packages/plugin-kit/tsconfig.json b/packages/plugin-kit/tsconfig.json
@@ -3,6 +3,7 @@
   "files": ["src/index.js"],
   "compilerOptions": {
     "outDir": "dist/esm",
-    "strict": true
+    "strict": true,
+    "types": ["mocha"]
   }
 }
diff --git a/scripts/publish.js b/scripts/publish.js
@@ -159,7 +159,7 @@ function publishPackagesToJsr(packageDirs) {
 
 		console.log(`Publishing ${packageDir}...`);
 		try {
-			exec(`npx jsr publish`, {
+			exec(`npx -y jsr publish`, {
 				stdio: "inherit",
 				env: process.env,
 				cwd: packageDir,

diff --git a/templates/package/package.json b/templates/package/package.json
@@ -30,7 +30,7 @@
     "build": "rollup -c && npm run build:dedupe-types && tsc -p tsconfig.esm.json && npm run build:cts",
     "test": "mocha \"tests/**/*.test.js\"",
     "test:coverage": "c8 npm test",
-    "test:jsr": "npx jsr@latest publish --dry-run",
+    "test:jsr": "npx -y jsr@latest publish --dry-run",
     "test:types": "tsc -p tests/types/tsconfig.json"
   },
   "repository": {