add hw2

node_modules/lodash-es/_baseSet.js

@@ -0,0 +1,51 @@
+import assignValue from './_assignValue.js';
+import castPath from './_castPath.js';
+import isIndex from './_isIndex.js';
+import isObject from './isObject.js';
+import toKey from './_toKey.js';
+
+/**
+ * The base implementation of `_.set`.
+ *
+ * @private
+ * @param {Object} object The object to modify.
+ * @param {Array|string} path The path of the property to set.
+ * @param {*} value The value to set.
+ * @param {Function} [customizer] The function to customize path creation.
+ * @returns {Object} Returns `object`.
+ */
+function baseSet(object, path, value, customizer) {
+  if (!isObject(object)) {
+    return object;
+  }
+  path = castPath(path, object);
+
+  var index = -1,
+      length = path.length,
+      lastIndex = length - 1,
+      nested = object;
+
+  while (nested != null && ++index < length) {
+    var key = toKey(path[index]),
+        newValue = value;
+
+    if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
+      return object;
+    }
+
+    if (index != lastIndex) {
+      var objValue = nested[key];
+      newValue = customizer ? customizer(objValue, key, nested) : undefined;
+      if (newValue === undefined) {
+        newValue = isObject(objValue)
+          ? objValue
+          : (isIndex(path[index + 1]) ? [] : {});
+      }
+    }
+    assignValue(nested, key, newValue);
+    nested = nested[key];
+  }
+  return object;
+}
+
+export default baseSet;