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35 lines
1007 B
35 lines
1007 B
"use strict";
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useSyncState;
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var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
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var React = _interopRequireWildcard(require("react"));
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function useSyncState(defaultState, onChange) {
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var stateRef = React.useRef(defaultState);
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var _React$useState = React.useState({}),
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_React$useState2 = (0, _slicedToArray2.default)(_React$useState, 2),
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forceUpdate = _React$useState2[1];
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function setState(updater) {
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var newValue = typeof updater === 'function' ? updater(stateRef.current) : updater;
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if (newValue !== stateRef.current) {
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onChange(newValue, stateRef.current);
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}
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stateRef.current = newValue;
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forceUpdate({});
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}
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return [stateRef.current, setState];
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} |