Fail TypeScript import

index.js

@@ -36,6 +36,7 @@
 	}
 
 	if (typeof module !== 'undefined' && module.exports) {
+		classNames.default = classNames;
 		module.exports = classNames;
 	} else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
 		// register as 'classnames', consistent with npm package name

package.json

@@ -11,7 +11,7 @@
   },
   "scripts": {
     "benchmarks": "node ./benchmarks/run",
-    "test": "mocha tests/*.js"
+    "test": "mocha tests/*.js && mocha --compilers ts:ts-node/register tests/*.ts"
   },
   "keywords": [
     "react",
@@ -23,7 +23,12 @@
     "utility"
   ],
   "devDependencies": {
+    "@types/mocha": "^2.2.33",
+    "@types/node": "0.0.2",
+    "assert": "^1.4.1",
     "benchmark": "^1.0.0",
-    "mocha": "^2.1.0"
+    "mocha": "^2.1.0",
+    "ts-node": "^1.7.2",
+    "typescript": "^2.1.4"
   }
 }

tests/index.ts

@@ -0,0 +1,10 @@
+/// <reference path="../node_modules/@types/mocha/index.d.ts" />
+
+import * as assert from 'assert';
+import classNames from '../';
+
+describe('classNames module', function () {
+	it('exports a function as default', function () {
+		assert.equal(typeof classNames, 'function');
+	});
+});

tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "allowSyntheticDefaultImports": true,
+    "module": "commonjs",
+    "target": "es5"
+  },
+  "include": [
+    "tests/index.ts"
+  ],
+  "exclude": [
+    "node_modules"
+  ],
+  "typeAcquisition": {
+    "enable": false
+  }
+}