more work

node_modules/lodash/lang/isEmpty.js

@@ -0,0 +1,49 @@
+var getLength = require('../internal/getLength'),
+    isArguments = require('./isArguments'),
+    isArray = require('./isArray'),
+    isFunction = require('./isFunction'),
+    isLength = require('../internal/isLength'),
+    isObjectLike = require('../internal/isObjectLike'),
+    isString = require('./isString'),
+    keys = require('../object/keys');
+
+/**
+ * Checks if `value` is empty. A value is considered empty unless it is an
+ * `arguments` object, array, string, or jQuery-like collection with a length
+ * greater than `0` or an object with own enumerable properties.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {Array|Object|string} value The value to inspect.
+ * @returns {boolean} Returns `true` if `value` is empty, else `false`.
+ * @example
+ *
+ * _.isEmpty(null);
+ * // => true
+ *
+ * _.isEmpty(true);
+ * // => true
+ *
+ * _.isEmpty(1);
+ * // => true
+ *
+ * _.isEmpty([1, 2, 3]);
+ * // => false
+ *
+ * _.isEmpty({ 'a': 1 });
+ * // => false
+ */
+function isEmpty(value) {
+  if (value == null) {
+    return true;
+  }
+  var length = getLength(value);
+  if (isLength(length) && (isArray(value) || isString(value) || isArguments(value) ||
+      (isObjectLike(value) && isFunction(value.splice)))) {
+    return !length;
+  }
+  return !keys(value).length;
+}
+
+module.exports = isEmpty;