{"ast":null,"code":"import _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport useEvent from \"./useEvent\";\nimport { useLayoutUpdateEffect } from \"./useLayoutEffect\";\nimport useState from \"./useState\";\n/** We only think `undefined` is empty */\nfunction hasValue(value) {\n  return value !== undefined;\n}\n\n/**\n * Similar to `useState` but will use props value if provided.\n * Note that internal use rc-util `useState` hook.\n */\nexport default function useMergedState(defaultStateValue, option) {\n  var _ref = option || {},\n    defaultValue = _ref.defaultValue,\n    value = _ref.value,\n    onChange = _ref.onChange,\n    postState = _ref.postState;\n\n  // ======================= Init =======================\n  var _useState = useState(function () {\n      if (hasValue(value)) {\n        return value;\n      } else if (hasValue(defaultValue)) {\n        return typeof defaultValue === 'function' ? defaultValue() : defaultValue;\n      } else {\n        return typeof defaultStateValue === 'function' ? 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