react app

react-app/node_modules/lodash/object/set.js

@@ -0,0 +1,55 @@
+var isIndex = require('../internal/isIndex'),
+    isKey = require('../internal/isKey'),
+    isObject = require('../lang/isObject'),
+    toPath = require('../internal/toPath');
+
+/**
+ * Sets the property value of `path` on `object`. If a portion of `path`
+ * does not exist it's created.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to augment.
+ * @param {Array|string} path The path of the property to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+ *
+ * _.set(object, 'a[0].b.c', 4);
+ * console.log(object.a[0].b.c);
+ * // => 4
+ *
+ * _.set(object, 'x[0].y.z', 5);
+ * console.log(object.x[0].y.z);
+ * // => 5
+ */
+function set(object, path, value) {
+  if (object == null) {
+    return object;
+  }
+  var pathKey = (path + '');
+  path = (object[pathKey] != null || isKey(path, object)) ? [pathKey] : toPath(path);
+
+  var index = -1,
+      length = path.length,
+      lastIndex = length - 1,
+      nested = object;
+
+  while (nested != null && ++index < length) {
+    var key = path[index];
+    if (isObject(nested)) {
+      if (index == lastIndex) {
+        nested[key] = value;
+      } else if (nested[key] == null) {
+        nested[key] = isIndex(path[index + 1]) ? [] : {};
+      }
+    }
+    nested = nested[key];
+  }
+  return object;
+}
+
+module.exports = set;