Security upgrades

node_modules/@material-ui/utils/esm/deepmerge.js

@@ -0,0 +1,28 @@
+import _extends from "@babel/runtime/helpers/esm/extends";
+import _typeof from "@babel/runtime/helpers/esm/typeof";
+export function isPlainObject(item) {
+  return item && _typeof(item) === 'object' && item.constructor === Object;
+}
+export default function deepmerge(target, source) {
+  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {
+    clone: true
+  };
+  var output = options.clone ? _extends({}, target) : target;
+
+  if (isPlainObject(target) && isPlainObject(source)) {
+    Object.keys(source).forEach(function (key) {
+      // Avoid prototype pollution
+      if (key === '__proto__') {
+        return;
+      }
+
+      if (isPlainObject(source[key]) && key in target) {
+        output[key] = deepmerge(target[key], source[key], options);
+      } else {
+        output[key] = source[key];
+      }
+    });
+  }
+
+  return output;
+}