{"ast":null,"code":"import _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport { useRef, useState, useEffect } from 'react';\nimport raf from \"rc-util/es/raf\";\nexport default function useRaf(callback) {\n  var rafRef = useRef();\n  var removedRef = useRef(false);\n\n  function trigger() {\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    if (!removedRef.current) {\n      raf.cancel(rafRef.current);\n      rafRef.current = raf(function () {\n        callback.apply(void 0, args);\n      });\n    }\n  }\n\n  useEffect(function () {\n    return function () {\n      removedRef.current = true;\n      raf.cancel(rafRef.current);\n    };\n  }, []);\n  return trigger;\n}\nexport function useRafState(defaultState) {\n  var batchRef = useRef([]);\n\n  var _useState = useState({}),\n      _useState2 = _slicedToArray(_useState, 2),\n      forceUpdate = _useState2[1];\n\n  var state = useRef(typeof defaultState === 'function' ? 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defaultState() : defaultState);\n  var flushUpdate = useRaf(function () {\n    var current = state.current;\n    batchRef.current.forEach(function (callback) {\n      current = callback(current);\n    });\n    batchRef.current = [];\n    state.current = current;\n    forceUpdate({});\n  });\n\n  function updater(callback) {\n    batchRef.current.push(callback);\n    flushUpdate();\n  }\n\n  return [state.current, updater];\n}"]},"metadata":{},"sourceType":"module"}