pre-installations and preparations

node_modules/@mui/utils/node/setRef/index.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "default", {
+  enumerable: true,
+  get: function () {
+    return _setRef.default;
+  }
+});
+var _setRef = _interopRequireDefault(require("./setRef"));

node_modules/@mui/utils/node/setRef/setRef.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = setRef;
+/**
+ * TODO v5: consider making it private
+ *
+ * passes {value} to {ref}
+ *
+ * WARNING: Be sure to only call this inside a callback that is passed as a ref.
+ * Otherwise, make sure to cleanup the previous {ref} if it changes. See
+ * https://github.com/mui/material-ui/issues/13539
+ *
+ * Useful if you want to expose the ref of an inner component to the public API
+ * while still using it inside the component.
+ * @param ref A ref callback or ref object. If anything falsy, this is a no-op.
+ */
+function setRef(ref, value) {
+  if (typeof ref === 'function') {
+    ref(value);
+  } else if (ref) {
+    ref.current = value;
+  }
+}