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frontend/node_modules/underscore/amd/isEmpty.js

@@ -0,0 +1,18 @@
+define(['./isArray', './keys', './_getLength', './isArguments', './isString'], function (isArray, keys, _getLength, isArguments, isString) {
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  function isEmpty(obj) {
+    if (obj == null) return true;
+    // Skip the more expensive `toString`-based type checks if `obj` has no
+    // `.length`.
+    var length = _getLength(obj);
+    if (typeof length == 'number' && (
+      isArray(obj) || isString(obj) || isArguments(obj)
+    )) return length === 0;
+    return _getLength(keys(obj)) === 0;
+  }
+
+  return isEmpty;
+
+});