23 lines
638 B
Plaintext
23 lines
638 B
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = void 0;
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var _react = require("react");
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var defaultShouldUpdate = function defaultShouldUpdate(a, b) {
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return !Object.is(a, b);
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};
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function usePrevious(state, shouldUpdate) {
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if (shouldUpdate === void 0) {
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shouldUpdate = defaultShouldUpdate;
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}
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var prevRef = (0, _react.useRef)(undefined);
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var curRef = (0, _react.useRef)(undefined);
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if (shouldUpdate(curRef.current, state)) {
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prevRef.current = curRef.current;
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curRef.current = state;
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}
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return prevRef.current;
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}
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var _default = exports["default"] = usePrevious; |