1 | 'use strict';
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2 |
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3 | Object.defineProperty(exports, '__esModule', { value: true });
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4 |
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5 | var xstate = require('xstate');
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6 | var jotai = require('jotai');
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7 |
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8 | function _extends() {
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9 | _extends = Object.assign || function (target) {
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10 | for (var i = 1; i < arguments.length; i++) {
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11 | var source = arguments[i];
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12 |
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13 | for (var key in source) {
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14 | if (Object.prototype.hasOwnProperty.call(source, key)) {
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15 | target[key] = source[key];
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16 | }
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17 | }
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18 | }
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19 |
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20 | return target;
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21 | };
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22 |
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23 | return _extends.apply(this, arguments);
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24 | }
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25 |
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26 | function _objectWithoutPropertiesLoose(source, excluded) {
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27 | if (source == null) return {};
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28 | var target = {};
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29 | var sourceKeys = Object.keys(source);
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30 | var key, i;
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31 |
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32 | for (i = 0; i < sourceKeys.length; i++) {
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33 | key = sourceKeys[i];
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34 | if (excluded.indexOf(key) >= 0) continue;
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35 | target[key] = source[key];
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36 | }
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37 |
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38 | return target;
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39 | }
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40 |
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41 | var _excluded = ["guards", "actions", "activities", "services", "delays"];
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42 | function atomWithMachine(getMachine, getOptions) {
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43 | var cachedMachineAtom = jotai.atom(null);
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44 | var machineAtom = jotai.atom(function (get) {
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45 | var cachedMachine = get(cachedMachineAtom);
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46 |
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47 | if (cachedMachine) {
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48 | return cachedMachine;
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49 | }
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50 |
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51 | var initializing = true;
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52 |
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53 | var safeGet = function safeGet(a) {
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54 | if (initializing) {
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55 | return get(a);
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56 | }
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57 |
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58 | throw new Error('get not allowed after initialization');
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59 | };
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60 |
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61 | var machine = typeof getMachine === 'function' ? getMachine(safeGet) : getMachine;
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62 | var options = typeof getOptions === 'function' ? getOptions(safeGet) : getOptions;
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63 | initializing = false;
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64 |
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65 | var _ref = options || {},
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66 | guards = _ref.guards,
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67 | actions = _ref.actions,
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68 | activities = _ref.activities,
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69 | services = _ref.services,
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70 | delays = _ref.delays,
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71 | interpreterOptions = _objectWithoutPropertiesLoose(_ref, _excluded);
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72 |
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73 | var machineConfig = _extends({}, guards && {
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74 | guards: guards
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75 | }, actions && {
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76 | actions: actions
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77 | }, activities && {
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78 | activities: activities
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79 | }, services && {
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80 | services: services
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81 | }, delays && {
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82 | delays: delays
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83 | });
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84 |
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85 | var machineWithConfig = machine.withConfig(machineConfig, machine.context);
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86 | var service = xstate.interpret(machineWithConfig, interpreterOptions);
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87 | return {
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88 | machine: machineWithConfig,
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89 | service: service
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90 | };
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91 | }, function (get, set, _arg) {
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92 | set(cachedMachineAtom, get(machineAtom));
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93 | });
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94 |
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95 | machineAtom.onMount = function (commit) {
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96 | commit();
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97 | };
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98 |
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99 | var cachedMachineStateAtom = jotai.atom(null);
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100 | var machineStateAtom = jotai.atom(function (get) {
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101 | var _get;
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102 |
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103 | return (_get = get(cachedMachineStateAtom)) != null ? _get : get(machineAtom).machine.initialState;
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104 | }, function (get, set, registerCleanup) {
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105 | var _get2 = get(machineAtom),
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106 | service = _get2.service;
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107 |
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108 | service.onTransition(function (nextState) {
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109 | set(cachedMachineStateAtom, nextState);
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110 | });
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111 | service.start();
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112 | registerCleanup(function () {
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113 | service.stop();
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114 | });
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115 | });
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116 |
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117 | machineStateAtom.onMount = function (initialize) {
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118 | var unsub;
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119 | initialize(function (cleanup) {
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120 | if (unsub === false) {
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121 | cleanup();
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122 | } else {
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123 | unsub = cleanup;
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124 | }
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125 | });
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126 | return function () {
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127 | if (unsub) {
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128 | unsub();
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129 | }
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130 |
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131 | unsub = false;
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132 | };
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133 | };
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134 |
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135 | var machineStateWithServiceAtom = jotai.atom(function (get) {
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136 | return get(machineStateAtom);
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137 | }, function (get, _set, event) {
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138 | var _get3 = get(machineAtom),
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139 | service = _get3.service;
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140 |
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141 | service.send(event);
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142 | });
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143 | return machineStateWithServiceAtom;
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144 | }
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145 |
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146 | exports.atomWithMachine = atomWithMachine;
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