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website/node_modules/@base-ui/utils/useRefWithInit.js

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+"use strict";
+'use client';
+
+var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.useRefWithInit = useRefWithInit;
+var React = _interopRequireWildcard(require("react"));
+const UNINITIALIZED = {};
+
+/**
+ * A React.useRef() that is initialized with a function. Note that it accepts an optional
+ * initialization argument, so the initialization function doesn't need to be an inline closure.
+ *
+ * @usage
+ *   const ref = useRefWithInit(sortColumns, columns)
+ */
+
+function useRefWithInit(init, initArg) {
+  const ref = React.useRef(UNINITIALIZED);
+  if (ref.current === UNINITIALIZED) {
+    ref.current = init(initArg);
+  }
+  return ref;
+}