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node_modules/react-native-web/dist/cjs/exports/useWindowDimensions/index.js
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48
node_modules/react-native-web/dist/cjs/exports/useWindowDimensions/index.js
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/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*
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*/
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'use strict';
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exports.__esModule = true;
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exports.default = useWindowDimensions;
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var _Dimensions = _interopRequireDefault(require("../Dimensions"));
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var _react = require("react");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function useWindowDimensions() {
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var _useState = (0, _react.useState)(function () {
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return _Dimensions.default.get('window');
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}),
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dims = _useState[0],
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setDims = _useState[1];
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(0, _react.useEffect)(function () {
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function handleChange(_ref) {
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var window = _ref.window;
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// $FlowFixMe
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setDims(window);
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}
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_Dimensions.default.addEventListener('change', handleChange); // We might have missed an update between calling `get` in render and
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// `addEventListener` in this handler, so we set it here. If there was
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// no change, React will filter out this update as a no-op.
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setDims(_Dimensions.default.get('window'));
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return function () {
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_Dimensions.default.removeEventListener('change', handleChange);
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};
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}, []);
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return dims;
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}
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module.exports = exports.default;
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