30 lines
1.3 KiB
JavaScript
30 lines
1.3 KiB
JavaScript
"use strict";
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useDiffItem;
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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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var _algorithmUtil = require("../utils/algorithmUtil");
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function useDiffItem(data, getKey, onDiff) {
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var _React$useState = React.useState(data),
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_React$useState2 = (0, _slicedToArray2.default)(_React$useState, 2),
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prevData = _React$useState2[0],
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setPrevData = _React$useState2[1];
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var _React$useState3 = React.useState(null),
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_React$useState4 = (0, _slicedToArray2.default)(_React$useState3, 2),
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diffItem = _React$useState4[0],
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setDiffItem = _React$useState4[1];
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React.useEffect(function () {
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var diff = (0, _algorithmUtil.findListDiffIndex)(prevData || [], data || [], getKey);
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if ((diff === null || diff === void 0 ? void 0 : diff.index) !== undefined) {
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onDiff === null || onDiff === void 0 || onDiff(diff.index);
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setDiffItem(data[diff.index]);
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}
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setPrevData(data);
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}, [data]);
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return [diffItem];
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} |