95 lines
2.0 KiB
JavaScript
95 lines
2.0 KiB
JavaScript
"use strict";
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var __assign = this && this.__assign || function () {
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__assign = Object.assign || function (t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) {
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if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
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}
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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var __read = this && this.__read || function (o, n) {
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var m = typeof Symbol === "function" && o[Symbol.iterator];
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if (!m) return o;
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var i = m.call(o),
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r,
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ar = [],
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e;
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try {
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while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
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ar.push(r.value);
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}
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} catch (error) {
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e = {
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error: error
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};
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} finally {
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try {
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if (r && !r.done && (m = i["return"])) m.call(i);
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} finally {
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if (e) throw e.error;
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}
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}
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return ar;
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};
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var react_1 = require("react");
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function useMap(initialValue) {
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var initialMap = react_1.useMemo(function () {
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return initialValue === undefined ? new Map() : new Map(initialValue);
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}, []);
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var _a = __read(react_1.useState(initialMap), 2),
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map = _a[0],
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setMap = _a[1];
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var stableActions = react_1.useMemo(function () {
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return {
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set: function set(key, entry) {
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setMap(function (prev) {
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var temp = new Map(prev);
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temp.set(key, entry);
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return temp;
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});
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},
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setAll: function setAll(newMap) {
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setMap(new Map(newMap));
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},
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remove: function remove(key) {
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setMap(function (prev) {
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var temp = new Map(prev);
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temp["delete"](key);
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return temp;
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});
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},
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reset: function reset() {
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return setMap(initialMap);
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}
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};
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}, [setMap, initialMap]);
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var utils = __assign({
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get: react_1.useCallback(function (key) {
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return map.get(key);
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}, [map])
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}, stableActions);
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return [map, utils];
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}
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exports["default"] = useMap; |