diff --git a/package-lock.json b/package-lock.json
index 1b0259f..ba27ae1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,6 +28,7 @@
         "eslint-plugin-prettier": "5.2.1",
         "eslint-plugin-simple-import-sort": "12.1.1",
         "eslint-plugin-unused-imports": "4.1.4",
+        "fast-glob": "3.3.2",
         "highlight.js": "11.10.0",
         "jest": "29.7.0",
         "jest-junit": "16.0.0",
diff --git a/package.json b/package.json
index 8dcf5cb..aeed1a1 100644
--- a/package.json
+++ b/package.json
@@ -55,6 +55,7 @@
     "eslint-plugin-prettier": "5.2.1",
     "eslint-plugin-simple-import-sort": "12.1.1",
     "eslint-plugin-unused-imports": "4.1.4",
+    "fast-glob": "3.3.2",
     "highlight.js": "11.10.0",
     "jest": "29.7.0",
     "jest-junit": "16.0.0",
diff --git a/src/index.spec.ts b/src/index.spec.ts
new file mode 100644
index 0000000..199f819
--- /dev/null
+++ b/src/index.spec.ts
@@ -0,0 +1,15 @@
+import { readFile } from 'node:fs/promises';
+
+import glob from 'fast-glob';
+
+const exports = await glob.async('src/{transformers,utils}/!(*.spec).ts', { onlyFiles: true });
+const barrel = await readFile('./src/index.ts', 'utf-8');
+
+describe('barrel', () => {
+  // lazy boy does not want to check all exports every time
+  // and neither does he want to generate the barrel file
+  it.each(exports)('exports %s', async file => {
+    const js = file.replace(/^src/, '.').replace(/\.ts$/, '.js');
+    expect(barrel).toEqual(expect.stringContaining(`export * from '${js}';`));
+  });
+});