diff --git a/package-lock.json b/package-lock.json
index 6739963..fcdf813 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
       },
       "devDependencies": {
         "@types/geojson": "^7946.0.10",
+        "color-name": "^2.0.0",
         "color-parse": "^2.0.2",
         "color-rgba": "^3.0.0",
         "color-space": "^2.3.1",
@@ -1263,13 +1264,23 @@
         "node": ">=7.0.0"
       }
     },
-    "node_modules/color-name": {
+    "node_modules/color-convert/node_modules/color-name": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/color-name": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-2.0.0.tgz",
+      "integrity": "sha512-SbtvAMWvASO5TE2QP07jHBMXKafgdZz8Vrsrn96fiL+O92/FN/PLARzUW5sKt013fjAprK2d2iCn2hk2Xb5oow==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.20"
+      }
+    },
     "node_modules/color-parse": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/color-parse/-/color-parse-2.0.2.tgz",
@@ -1280,16 +1291,6 @@
         "color-name": "^2.0.0"
       }
     },
-    "node_modules/color-parse/node_modules/color-name": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/color-name/-/color-name-2.0.0.tgz",
-      "integrity": "sha512-SbtvAMWvASO5TE2QP07jHBMXKafgdZz8Vrsrn96fiL+O92/FN/PLARzUW5sKt013fjAprK2d2iCn2hk2Xb5oow==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=12.20"
-      }
-    },
     "node_modules/color-rgba": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/color-rgba/-/color-rgba-3.0.0.tgz",
diff --git a/package.json b/package.json
index b06c688..9b5cfe2 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
   },
   "devDependencies": {
     "@types/geojson": "^7946.0.10",
+    "color-name": "^2.0.0",
     "color-parse": "^2.0.2",
     "color-rgba": "^3.0.0",
     "color-space": "^2.3.1",
diff --git a/vite.config.js b/vite.config.js
index 0f1f8fd..2209488 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -52,21 +52,15 @@ const addNodeModulesToDist = () => {
         ['./cases/create-importmap.js', './dist/cases/create-importmap.js'],
       ];
       await Promise.all(
-        toCopy.map(([src, dest]) => {
-          if (!existsSync(src)) {
-            return;
-          }
+        toCopy.map(([src, dest]) =>
           fs.cp(src, dest, {
             recursive: true,
-          });
-        })
+          })
+        )
       );
 
       // tweak color-name default export
       const colorNamePath = './dist/node_modules/color-name/index.js';
-      if (!existsSync(colorNamePath)) {
-        return;
-      }
       const colorName = await fs.readFile(
         './dist/node_modules/color-name/index.js',
         'utf-8'