diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..677e36e
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f1c4e93..d745794 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,9 +33,6 @@ jobs:
             - name: 📥 Install dependencies
               run: npm install
 
-            - name: ▶️ Run format:check script
-              run: npm run format:check
-
             - name: ▶️ Run lint script
               run: npm run lint
 
diff --git a/.knip.jsonc b/.knip.jsonc
new file mode 100644
index 0000000..33c4d15
--- /dev/null
+++ b/.knip.jsonc
@@ -0,0 +1,4 @@
+{
+    "$schema": "https://unpkg.com/knip@5/schema.json",
+    "ignore": ["./docs/.vitepress/**/*"]
+}
diff --git a/package.json b/package.json
index b4d8bb7..9578104 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,11 @@
         "format": "npm run -s format:prettier -- --write",
         "format:prettier": "prettier .",
         "format:check": "npm run -s format:prettier -- --check",
-        "lint": "eslint .",
+        "lint:eslint": "eslint .",
+        "lint:format": "npm run -s format:check",
+        "lint:installed-check": "installed-check -v -i installed-check -i npm-run-all2 -i knip",
+        "lint:knip": "knip",
+        "lint": "run-p lint:*",
         "test": "c8 mocha --reporter dot \"test/*.mjs\"",
         "preversion": "npm test && npm run -s build",
         "postversion": "git push && git push --tags",
@@ -53,8 +57,10 @@
         "c8": "^8.0.1",
         "dot-prop": "^7.2.0",
         "eslint": "^8.50.0",
+        "installed-check": "^8.0.1",
+        "knip": "^5.0.3",
         "mocha": "^9.2.2",
-        "npm-run-all": "^4.1.5",
+        "npm-run-all2": "^6.1.2",
         "opener": "^1.5.2",
         "prettier": "2.8.8",
         "rimraf": "^3.0.2",