Add isEmptyObject

src/isEmptyObject/index.js

@@ -0,0 +1,24 @@
+/**
+ * Object is empty or not
+ *
+ * {@link https://stackoverflow.com/a/34491966/1284255}
+ * @version 0.0.1
+ *
+ * @param {Object} obj
+ * @returns {boolean}
+ *
+ * @example
+ * isEmptyObject({}); //=> true
+ * isEmptyObject({foo: 1}); //=> false
+ */
+function isEmptyObject(obj) {
+  for (let key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+module.exports = isEmptyObject;

src/isEmptyObject/index.test.js

@@ -0,0 +1,10 @@
+import test from 'ava';
+import isEmptyObject from '.';
+
+test('should return `true` for empty object', t => {
+  t.is(isEmptyObject({}), true);
+});
+
+test('should return `false` for not empty object', t => {
+  t.is(isEmptyObject({foo: 1}), false);
+});