diff --git a/eslint.config.js b/eslint.config.js
index e9ef5784..cbb37785 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -31,6 +31,7 @@ export default [
 	{
 		files: [
 			"scripts/**",
+			"tools/**",
 			"packages/migrate-config/src/migrate-config-cli.js",
 		],
 		rules: {
diff --git a/packages/compat/package.json b/packages/compat/package.json
index 1ed44d78..3a38791b 100644
--- a/packages/compat/package.json
+++ b/packages/compat/package.json
@@ -25,7 +25,7 @@
     "test": "tests"
   },
   "scripts": {
-    "build:cts": "node -e \"fs.copyFileSync('dist/esm/index.d.ts', 'dist/cjs/index.d.cts')\"",
+    "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": "mocha tests/*.js",
diff --git a/packages/config-array/package.json b/packages/config-array/package.json
index 943a8646..5ddeb9bd 100644
--- a/packages/config-array/package.json
+++ b/packages/config-array/package.json
@@ -32,7 +32,7 @@
   "homepage": "https://github.com/eslint/rewrite#readme",
   "scripts": {
     "build:dedupe-types": "node ../../tools/dedupe-types.js dist/cjs/index.cjs dist/esm/index.js",
-    "build:cts": "node -e \"fs.copyFileSync('dist/esm/index.d.ts', 'dist/cjs/index.d.cts')\"",
+    "build:cts": "node ../../tools/build-cts.js dist/esm/index.d.ts dist/cjs/index.d.cts",
     "build:std__path": "rollup -c rollup.std__path-config.js && node fix-std__path-imports",
     "build": "rollup -c && npm run build:dedupe-types && tsc -p tsconfig.esm.json && npm run build:cts && npm run build:std__path",
     "test:jsr": "npx jsr@latest publish --dry-run",
diff --git a/packages/object-schema/package.json b/packages/object-schema/package.json
index 5c16feef..e8d58b3b 100644
--- a/packages/object-schema/package.json
+++ b/packages/object-schema/package.json
@@ -25,7 +25,7 @@
     "test": "tests"
   },
   "scripts": {
-    "build:cts": "node -e \"fs.copyFileSync('dist/esm/index.d.ts', 'dist/cjs/index.d.cts')\"",
+    "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": "mocha tests/",
diff --git a/packages/plugin-kit/build-cts.js b/packages/plugin-kit/build-cts.js
deleted file mode 100644
index ade7ae13..00000000
--- a/packages/plugin-kit/build-cts.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * @fileoverview Rewrites import expressions for CommonJS compatibility.
- * This script creates "dist/cjs/index.d.cts" from "dist/esm/index.d.ts" by modifying imports
- * from `"./types.ts"` to `"./types.cts"`.
- *
- * @author Francesco Trotta
- */
-
-import { readFile, writeFile } from "node:fs/promises";
-
-const oldSourceText = await readFile("dist/esm/index.d.ts", "utf-8");
-const newSourceText = oldSourceText.replaceAll(
-	'import("./types.ts")',
-	'import("./types.cts")',
-);
-await writeFile("dist/cjs/index.d.cts", newSourceText);
diff --git a/packages/plugin-kit/package.json b/packages/plugin-kit/package.json
index d641ab5f..4c71e5e1 100644
--- a/packages/plugin-kit/package.json
+++ b/packages/plugin-kit/package.json
@@ -32,7 +32,7 @@
   "homepage": "https://github.com/eslint/rewrite#readme",
   "scripts": {
     "build:dedupe-types": "node ../../tools/dedupe-types.js dist/cjs/index.cjs dist/esm/index.js",
-    "build:cts": "node ./build-cts.js",
+    "build:cts": "node ../../tools/build-cts.js dist/esm/index.d.ts dist/cjs/index.d.cts",
     "build": "rollup -c && npm run build:dedupe-types && tsc -p tsconfig.esm.json && npm run build:cts",
     "pretest": "npm run build",
     "test": "mocha tests/",
diff --git a/tools/build-cts.js b/tools/build-cts.js
new file mode 100644
index 00000000..ee635094
--- /dev/null
+++ b/tools/build-cts.js
@@ -0,0 +1,32 @@
+/**
+ * @fileoverview Rewrites import expressions for CommonJS compatibility.
+ * This script creates "dist/cjs/index.d.cts" from "dist/esm/index.d.ts" by modifying imports
+ * from `"./types.ts"` to `"./types.cts"`.
+ *
+ *    node tools/build-cts.js /path/to/esm/index.d.ts path/to/cjs/index.d.cts
+ *
+ * @author Francesco Trotta
+ */
+
+import { readFile, writeFile } from "node:fs/promises";
+
+const filename = process.argv[2];
+const newFilename = process.argv[3];
+
+if (!filename) {
+	console.error("No filename provided.");
+	process.exit(1);
+}
+
+if (!newFilename) {
+	console.error("No new filename provided.");
+	process.exit(1);
+}
+
+const oldSourceText = await readFile(filename, "utf-8");
+const newSourceText = oldSourceText.replaceAll(
+	'import("./types.ts")',
+	'import("./types.cts")',
+);
+
+await writeFile(newFilename, newSourceText);