1 | /**
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2 | * @license React
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3 | * react-refresh-runtime.development.js
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4 | *
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5 | * Copyright (c) Facebook, Inc. and its affiliates.
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6 | *
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7 | * This source code is licensed under the MIT license found in the
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8 | * LICENSE file in the root directory of this source tree.
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9 | */
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10 |
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11 | 'use strict';
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12 |
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13 | if (process.env.NODE_ENV !== "production") {
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14 | (function() {
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15 | 'use strict';
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16 |
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17 | // ATTENTION
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18 | var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref');
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19 | var REACT_MEMO_TYPE = Symbol.for('react.memo');
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20 |
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21 | var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; // We never remove these associations.
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22 | // It's OK to reference families, but use WeakMap/Set for types.
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23 |
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24 | var allFamiliesByID = new Map();
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25 | var allFamiliesByType = new PossiblyWeakMap();
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26 | var allSignaturesByType = new PossiblyWeakMap(); // This WeakMap is read by React, so we only put families
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27 | // that have actually been edited here. This keeps checks fast.
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28 | // $FlowIssue
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29 |
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30 | var updatedFamiliesByType = new PossiblyWeakMap(); // This is cleared on every performReactRefresh() call.
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31 | // It is an array of [Family, NextType] tuples.
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32 |
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33 | var pendingUpdates = []; // This is injected by the renderer via DevTools global hook.
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34 |
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35 | var helpersByRendererID = new Map();
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36 | var helpersByRoot = new Map(); // We keep track of mounted roots so we can schedule updates.
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37 |
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38 | var mountedRoots = new Set(); // If a root captures an error, we remember it so we can retry on edit.
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39 |
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40 | var failedRoots = new Set(); // In environments that support WeakMap, we also remember the last element for every root.
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41 | // It needs to be weak because we do this even for roots that failed to mount.
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42 | // If there is no WeakMap, we won't attempt to do retrying.
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43 | // $FlowIssue
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44 |
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45 | var rootElements = // $FlowIssue
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46 | typeof WeakMap === 'function' ? new WeakMap() : null;
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47 | var isPerformingRefresh = false;
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48 |
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49 | function computeFullKey(signature) {
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50 | if (signature.fullKey !== null) {
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51 | return signature.fullKey;
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52 | }
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53 |
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54 | var fullKey = signature.ownKey;
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55 | var hooks;
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56 |
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57 | try {
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58 | hooks = signature.getCustomHooks();
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59 | } catch (err) {
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60 | // This can happen in an edge case, e.g. if expression like Foo.useSomething
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61 | // depends on Foo which is lazily initialized during rendering.
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62 | // In that case just assume we'll have to remount.
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63 | signature.forceReset = true;
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64 | signature.fullKey = fullKey;
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65 | return fullKey;
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66 | }
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67 |
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68 | for (var i = 0; i < hooks.length; i++) {
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69 | var hook = hooks[i];
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70 |
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71 | if (typeof hook !== 'function') {
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72 | // Something's wrong. Assume we need to remount.
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73 | signature.forceReset = true;
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74 | signature.fullKey = fullKey;
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75 | return fullKey;
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76 | }
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77 |
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78 | var nestedHookSignature = allSignaturesByType.get(hook);
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79 |
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80 | if (nestedHookSignature === undefined) {
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81 | // No signature means Hook wasn't in the source code, e.g. in a library.
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82 | // We'll skip it because we can assume it won't change during this session.
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83 | continue;
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84 | }
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85 |
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86 | var nestedHookKey = computeFullKey(nestedHookSignature);
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87 |
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88 | if (nestedHookSignature.forceReset) {
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89 | signature.forceReset = true;
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90 | }
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91 |
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92 | fullKey += '\n---\n' + nestedHookKey;
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93 | }
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94 |
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95 | signature.fullKey = fullKey;
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96 | return fullKey;
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97 | }
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98 |
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99 | function haveEqualSignatures(prevType, nextType) {
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100 | var prevSignature = allSignaturesByType.get(prevType);
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101 | var nextSignature = allSignaturesByType.get(nextType);
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102 |
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103 | if (prevSignature === undefined && nextSignature === undefined) {
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104 | return true;
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105 | }
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106 |
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107 | if (prevSignature === undefined || nextSignature === undefined) {
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108 | return false;
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109 | }
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110 |
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111 | if (computeFullKey(prevSignature) !== computeFullKey(nextSignature)) {
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112 | return false;
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113 | }
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114 |
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115 | if (nextSignature.forceReset) {
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116 | return false;
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117 | }
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118 |
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119 | return true;
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120 | }
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121 |
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122 | function isReactClass(type) {
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123 | return type.prototype && type.prototype.isReactComponent;
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124 | }
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125 |
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126 | function canPreserveStateBetween(prevType, nextType) {
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127 | if (isReactClass(prevType) || isReactClass(nextType)) {
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128 | return false;
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129 | }
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130 |
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131 | if (haveEqualSignatures(prevType, nextType)) {
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132 | return true;
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133 | }
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134 |
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135 | return false;
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136 | }
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137 |
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138 | function resolveFamily(type) {
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139 | // Only check updated types to keep lookups fast.
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140 | return updatedFamiliesByType.get(type);
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141 | } // If we didn't care about IE11, we could use new Map/Set(iterable).
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142 |
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143 |
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144 | function cloneMap(map) {
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145 | var clone = new Map();
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146 | map.forEach(function (value, key) {
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147 | clone.set(key, value);
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148 | });
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149 | return clone;
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150 | }
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151 |
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152 | function cloneSet(set) {
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153 | var clone = new Set();
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154 | set.forEach(function (value) {
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155 | clone.add(value);
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156 | });
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157 | return clone;
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158 | } // This is a safety mechanism to protect against rogue getters and Proxies.
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159 |
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160 |
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161 | function getProperty(object, property) {
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162 | try {
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163 | return object[property];
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164 | } catch (err) {
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165 | // Intentionally ignore.
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166 | return undefined;
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167 | }
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168 | }
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169 |
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170 | function performReactRefresh() {
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171 |
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172 | if (pendingUpdates.length === 0) {
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173 | return null;
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174 | }
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175 |
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176 | if (isPerformingRefresh) {
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177 | return null;
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178 | }
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179 |
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180 | isPerformingRefresh = true;
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181 |
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182 | try {
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183 | var staleFamilies = new Set();
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184 | var updatedFamilies = new Set();
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185 | var updates = pendingUpdates;
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186 | pendingUpdates = [];
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187 | updates.forEach(function (_ref) {
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188 | var family = _ref[0],
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189 | nextType = _ref[1];
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190 | // Now that we got a real edit, we can create associations
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191 | // that will be read by the React reconciler.
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192 | var prevType = family.current;
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193 | updatedFamiliesByType.set(prevType, family);
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194 | updatedFamiliesByType.set(nextType, family);
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195 | family.current = nextType; // Determine whether this should be a re-render or a re-mount.
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196 |
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197 | if (canPreserveStateBetween(prevType, nextType)) {
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198 | updatedFamilies.add(family);
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199 | } else {
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200 | staleFamilies.add(family);
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201 | }
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202 | }); // TODO: rename these fields to something more meaningful.
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203 |
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204 | var update = {
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205 | updatedFamilies: updatedFamilies,
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206 | // Families that will re-render preserving state
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207 | staleFamilies: staleFamilies // Families that will be remounted
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208 |
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209 | };
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210 | helpersByRendererID.forEach(function (helpers) {
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211 | // Even if there are no roots, set the handler on first update.
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212 | // This ensures that if *new* roots are mounted, they'll use the resolve handler.
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213 | helpers.setRefreshHandler(resolveFamily);
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214 | });
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215 | var didError = false;
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216 | var firstError = null; // We snapshot maps and sets that are mutated during commits.
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217 | // If we don't do this, there is a risk they will be mutated while
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218 | // we iterate over them. For example, trying to recover a failed root
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219 | // may cause another root to be added to the failed list -- an infinite loop.
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220 |
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221 | var failedRootsSnapshot = cloneSet(failedRoots);
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222 | var mountedRootsSnapshot = cloneSet(mountedRoots);
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223 | var helpersByRootSnapshot = cloneMap(helpersByRoot);
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224 | failedRootsSnapshot.forEach(function (root) {
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225 | var helpers = helpersByRootSnapshot.get(root);
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226 |
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227 | if (helpers === undefined) {
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228 | throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
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229 | }
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230 |
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231 | if (!failedRoots.has(root)) {// No longer failed.
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232 | }
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233 |
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234 | if (rootElements === null) {
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235 | return;
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236 | }
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237 |
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238 | if (!rootElements.has(root)) {
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239 | return;
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240 | }
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241 |
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242 | var element = rootElements.get(root);
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243 |
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244 | try {
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245 | helpers.scheduleRoot(root, element);
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246 | } catch (err) {
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247 | if (!didError) {
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248 | didError = true;
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249 | firstError = err;
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250 | } // Keep trying other roots.
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251 |
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252 | }
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253 | });
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254 | mountedRootsSnapshot.forEach(function (root) {
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255 | var helpers = helpersByRootSnapshot.get(root);
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256 |
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257 | if (helpers === undefined) {
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258 | throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
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259 | }
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260 |
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261 | if (!mountedRoots.has(root)) {// No longer mounted.
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262 | }
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263 |
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264 | try {
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265 | helpers.scheduleRefresh(root, update);
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266 | } catch (err) {
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267 | if (!didError) {
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268 | didError = true;
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269 | firstError = err;
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270 | } // Keep trying other roots.
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271 |
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272 | }
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273 | });
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274 |
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275 | if (didError) {
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276 | throw firstError;
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277 | }
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278 |
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279 | return update;
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280 | } finally {
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281 | isPerformingRefresh = false;
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282 | }
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283 | }
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284 | function register(type, id) {
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285 | {
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286 | if (type === null) {
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287 | return;
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288 | }
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289 |
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290 | if (typeof type !== 'function' && typeof type !== 'object') {
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291 | return;
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292 | } // This can happen in an edge case, e.g. if we register
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293 | // return value of a HOC but it returns a cached component.
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294 | // Ignore anything but the first registration for each type.
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295 |
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296 |
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297 | if (allFamiliesByType.has(type)) {
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298 | return;
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299 | } // Create family or remember to update it.
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300 | // None of this bookkeeping affects reconciliation
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301 | // until the first performReactRefresh() call above.
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302 |
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303 |
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304 | var family = allFamiliesByID.get(id);
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305 |
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306 | if (family === undefined) {
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307 | family = {
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308 | current: type
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309 | };
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310 | allFamiliesByID.set(id, family);
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311 | } else {
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312 | pendingUpdates.push([family, type]);
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313 | }
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314 |
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315 | allFamiliesByType.set(type, family); // Visit inner types because we might not have registered them.
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316 |
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317 | if (typeof type === 'object' && type !== null) {
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318 | switch (getProperty(type, '$$typeof')) {
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319 | case REACT_FORWARD_REF_TYPE:
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320 | register(type.render, id + '$render');
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321 | break;
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322 |
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323 | case REACT_MEMO_TYPE:
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324 | register(type.type, id + '$type');
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325 | break;
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326 | }
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327 | }
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328 | }
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329 | }
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330 | function setSignature(type, key) {
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331 | var forceReset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
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332 | var getCustomHooks = arguments.length > 3 ? arguments[3] : undefined;
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333 |
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334 | {
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335 | if (!allSignaturesByType.has(type)) {
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336 | allSignaturesByType.set(type, {
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337 | forceReset: forceReset,
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338 | ownKey: key,
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339 | fullKey: null,
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340 | getCustomHooks: getCustomHooks || function () {
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341 | return [];
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342 | }
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343 | });
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344 | } // Visit inner types because we might not have signed them.
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345 |
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346 |
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347 | if (typeof type === 'object' && type !== null) {
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348 | switch (getProperty(type, '$$typeof')) {
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349 | case REACT_FORWARD_REF_TYPE:
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350 | setSignature(type.render, key, forceReset, getCustomHooks);
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351 | break;
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352 |
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353 | case REACT_MEMO_TYPE:
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354 | setSignature(type.type, key, forceReset, getCustomHooks);
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355 | break;
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356 | }
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357 | }
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358 | }
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359 | } // This is lazily called during first render for a type.
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360 | // It captures Hook list at that time so inline requires don't break comparisons.
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361 |
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362 | function collectCustomHooksForSignature(type) {
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363 | {
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364 | var signature = allSignaturesByType.get(type);
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365 |
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366 | if (signature !== undefined) {
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367 | computeFullKey(signature);
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368 | }
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369 | }
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370 | }
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371 | function getFamilyByID(id) {
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372 | {
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373 | return allFamiliesByID.get(id);
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374 | }
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375 | }
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376 | function getFamilyByType(type) {
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377 | {
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378 | return allFamiliesByType.get(type);
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379 | }
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380 | }
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381 | function findAffectedHostInstances(families) {
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382 | {
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383 | var affectedInstances = new Set();
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384 | mountedRoots.forEach(function (root) {
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385 | var helpers = helpersByRoot.get(root);
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386 |
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387 | if (helpers === undefined) {
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388 | throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
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389 | }
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390 |
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391 | var instancesForRoot = helpers.findHostInstancesForRefresh(root, families);
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392 | instancesForRoot.forEach(function (inst) {
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393 | affectedInstances.add(inst);
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394 | });
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395 | });
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396 | return affectedInstances;
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397 | }
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398 | }
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399 | function injectIntoGlobalHook(globalObject) {
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400 | {
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401 | // For React Native, the global hook will be set up by require('react-devtools-core').
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402 | // That code will run before us. So we need to monkeypatch functions on existing hook.
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403 | // For React Web, the global hook will be set up by the extension.
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404 | // This will also run before us.
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405 | var hook = globalObject.__REACT_DEVTOOLS_GLOBAL_HOOK__;
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406 |
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407 | if (hook === undefined) {
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408 | // However, if there is no DevTools extension, we'll need to set up the global hook ourselves.
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409 | // Note that in this case it's important that renderer code runs *after* this method call.
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410 | // Otherwise, the renderer will think that there is no global hook, and won't do the injection.
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411 | var nextID = 0;
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412 | globalObject.__REACT_DEVTOOLS_GLOBAL_HOOK__ = hook = {
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413 | renderers: new Map(),
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414 | supportsFiber: true,
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415 | inject: function (injected) {
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416 | return nextID++;
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417 | },
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418 | onScheduleFiberRoot: function (id, root, children) {},
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419 | onCommitFiberRoot: function (id, root, maybePriorityLevel, didError) {},
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420 | onCommitFiberUnmount: function () {}
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421 | };
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422 | }
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423 |
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424 | if (hook.isDisabled) {
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425 | // This isn't a real property on the hook, but it can be set to opt out
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426 | // of DevTools integration and associated warnings and logs.
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427 | // Using console['warn'] to evade Babel and ESLint
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428 | console['warn']('Something has shimmed the React DevTools global hook (__REACT_DEVTOOLS_GLOBAL_HOOK__). ' + 'Fast Refresh is not compatible with this shim and will be disabled.');
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429 | return;
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430 | } // Here, we just want to get a reference to scheduleRefresh.
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431 |
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432 |
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433 | var oldInject = hook.inject;
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434 |
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435 | hook.inject = function (injected) {
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436 | var id = oldInject.apply(this, arguments);
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437 |
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438 | if (typeof injected.scheduleRefresh === 'function' && typeof injected.setRefreshHandler === 'function') {
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439 | // This version supports React Refresh.
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440 | helpersByRendererID.set(id, injected);
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441 | }
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442 |
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443 | return id;
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444 | }; // Do the same for any already injected roots.
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445 | // This is useful if ReactDOM has already been initialized.
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446 | // https://github.com/facebook/react/issues/17626
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447 |
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448 |
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449 | hook.renderers.forEach(function (injected, id) {
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450 | if (typeof injected.scheduleRefresh === 'function' && typeof injected.setRefreshHandler === 'function') {
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451 | // This version supports React Refresh.
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452 | helpersByRendererID.set(id, injected);
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453 | }
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454 | }); // We also want to track currently mounted roots.
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455 |
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456 | var oldOnCommitFiberRoot = hook.onCommitFiberRoot;
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457 |
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458 | var oldOnScheduleFiberRoot = hook.onScheduleFiberRoot || function () {};
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459 |
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460 | hook.onScheduleFiberRoot = function (id, root, children) {
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461 | if (!isPerformingRefresh) {
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462 | // If it was intentionally scheduled, don't attempt to restore.
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463 | // This includes intentionally scheduled unmounts.
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464 | failedRoots.delete(root);
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465 |
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466 | if (rootElements !== null) {
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467 | rootElements.set(root, children);
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468 | }
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469 | }
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470 |
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471 | return oldOnScheduleFiberRoot.apply(this, arguments);
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472 | };
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473 |
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474 | hook.onCommitFiberRoot = function (id, root, maybePriorityLevel, didError) {
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475 | var helpers = helpersByRendererID.get(id);
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476 |
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477 | if (helpers !== undefined) {
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478 | helpersByRoot.set(root, helpers);
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479 | var current = root.current;
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480 | var alternate = current.alternate; // We need to determine whether this root has just (un)mounted.
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481 | // This logic is copy-pasted from similar logic in the DevTools backend.
|
---|
482 | // If this breaks with some refactoring, you'll want to update DevTools too.
|
---|
483 |
|
---|
484 | if (alternate !== null) {
|
---|
485 | var wasMounted = alternate.memoizedState != null && alternate.memoizedState.element != null && mountedRoots.has(root);
|
---|
486 | var isMounted = current.memoizedState != null && current.memoizedState.element != null;
|
---|
487 |
|
---|
488 | if (!wasMounted && isMounted) {
|
---|
489 | // Mount a new root.
|
---|
490 | mountedRoots.add(root);
|
---|
491 | failedRoots.delete(root);
|
---|
492 | } else if (wasMounted && isMounted) ; else if (wasMounted && !isMounted) {
|
---|
493 | // Unmount an existing root.
|
---|
494 | mountedRoots.delete(root);
|
---|
495 |
|
---|
496 | if (didError) {
|
---|
497 | // We'll remount it on future edits.
|
---|
498 | failedRoots.add(root);
|
---|
499 | } else {
|
---|
500 | helpersByRoot.delete(root);
|
---|
501 | }
|
---|
502 | } else if (!wasMounted && !isMounted) {
|
---|
503 | if (didError) {
|
---|
504 | // We'll remount it on future edits.
|
---|
505 | failedRoots.add(root);
|
---|
506 | }
|
---|
507 | }
|
---|
508 | } else {
|
---|
509 | // Mount a new root.
|
---|
510 | mountedRoots.add(root);
|
---|
511 | }
|
---|
512 | } // Always call the decorated DevTools hook.
|
---|
513 |
|
---|
514 |
|
---|
515 | return oldOnCommitFiberRoot.apply(this, arguments);
|
---|
516 | };
|
---|
517 | }
|
---|
518 | }
|
---|
519 | function hasUnrecoverableErrors() {
|
---|
520 | // TODO: delete this after removing dependency in RN.
|
---|
521 | return false;
|
---|
522 | } // Exposed for testing.
|
---|
523 |
|
---|
524 | function _getMountedRootCount() {
|
---|
525 | {
|
---|
526 | return mountedRoots.size;
|
---|
527 | }
|
---|
528 | } // This is a wrapper over more primitive functions for setting signature.
|
---|
529 | // Signatures let us decide whether the Hook order has changed on refresh.
|
---|
530 | //
|
---|
531 | // This function is intended to be used as a transform target, e.g.:
|
---|
532 | // var _s = createSignatureFunctionForTransform()
|
---|
533 | //
|
---|
534 | // function Hello() {
|
---|
535 | // const [foo, setFoo] = useState(0);
|
---|
536 | // const value = useCustomHook();
|
---|
537 | // _s(); /* Call without arguments triggers collecting the custom Hook list.
|
---|
538 | // * This doesn't happen during the module evaluation because we
|
---|
539 | // * don't want to change the module order with inline requires.
|
---|
540 | // * Next calls are noops. */
|
---|
541 | // return <h1>Hi</h1>;
|
---|
542 | // }
|
---|
543 | //
|
---|
544 | // /* Call with arguments attaches the signature to the type: */
|
---|
545 | // _s(
|
---|
546 | // Hello,
|
---|
547 | // 'useState{[foo, setFoo]}(0)',
|
---|
548 | // () => [useCustomHook], /* Lazy to avoid triggering inline requires */
|
---|
549 | // );
|
---|
550 |
|
---|
551 | function createSignatureFunctionForTransform() {
|
---|
552 | {
|
---|
553 | var savedType;
|
---|
554 | var hasCustomHooks;
|
---|
555 | var didCollectHooks = false;
|
---|
556 | return function (type, key, forceReset, getCustomHooks) {
|
---|
557 | if (typeof key === 'string') {
|
---|
558 | // We're in the initial phase that associates signatures
|
---|
559 | // with the functions. Note this may be called multiple times
|
---|
560 | // in HOC chains like _s(hoc1(_s(hoc2(_s(actualFunction))))).
|
---|
561 | if (!savedType) {
|
---|
562 | // We're in the innermost call, so this is the actual type.
|
---|
563 | savedType = type;
|
---|
564 | hasCustomHooks = typeof getCustomHooks === 'function';
|
---|
565 | } // Set the signature for all types (even wrappers!) in case
|
---|
566 | // they have no signatures of their own. This is to prevent
|
---|
567 | // problems like https://github.com/facebook/react/issues/20417.
|
---|
568 |
|
---|
569 |
|
---|
570 | if (type != null && (typeof type === 'function' || typeof type === 'object')) {
|
---|
571 | setSignature(type, key, forceReset, getCustomHooks);
|
---|
572 | }
|
---|
573 |
|
---|
574 | return type;
|
---|
575 | } else {
|
---|
576 | // We're in the _s() call without arguments, which means
|
---|
577 | // this is the time to collect custom Hook signatures.
|
---|
578 | // Only do this once. This path is hot and runs *inside* every render!
|
---|
579 | if (!didCollectHooks && hasCustomHooks) {
|
---|
580 | didCollectHooks = true;
|
---|
581 | collectCustomHooksForSignature(savedType);
|
---|
582 | }
|
---|
583 | }
|
---|
584 | };
|
---|
585 | }
|
---|
586 | }
|
---|
587 | function isLikelyComponentType(type) {
|
---|
588 | {
|
---|
589 | switch (typeof type) {
|
---|
590 | case 'function':
|
---|
591 | {
|
---|
592 | // First, deal with classes.
|
---|
593 | if (type.prototype != null) {
|
---|
594 | if (type.prototype.isReactComponent) {
|
---|
595 | // React class.
|
---|
596 | return true;
|
---|
597 | }
|
---|
598 |
|
---|
599 | var ownNames = Object.getOwnPropertyNames(type.prototype);
|
---|
600 |
|
---|
601 | if (ownNames.length > 1 || ownNames[0] !== 'constructor') {
|
---|
602 | // This looks like a class.
|
---|
603 | return false;
|
---|
604 | } // eslint-disable-next-line no-proto
|
---|
605 |
|
---|
606 |
|
---|
607 | if (type.prototype.__proto__ !== Object.prototype) {
|
---|
608 | // It has a superclass.
|
---|
609 | return false;
|
---|
610 | } // Pass through.
|
---|
611 | // This looks like a regular function with empty prototype.
|
---|
612 |
|
---|
613 | } // For plain functions and arrows, use name as a heuristic.
|
---|
614 |
|
---|
615 |
|
---|
616 | var name = type.name || type.displayName;
|
---|
617 | return typeof name === 'string' && /^[A-Z]/.test(name);
|
---|
618 | }
|
---|
619 |
|
---|
620 | case 'object':
|
---|
621 | {
|
---|
622 | if (type != null) {
|
---|
623 | switch (getProperty(type, '$$typeof')) {
|
---|
624 | case REACT_FORWARD_REF_TYPE:
|
---|
625 | case REACT_MEMO_TYPE:
|
---|
626 | // Definitely React components.
|
---|
627 | return true;
|
---|
628 |
|
---|
629 | default:
|
---|
630 | return false;
|
---|
631 | }
|
---|
632 | }
|
---|
633 |
|
---|
634 | return false;
|
---|
635 | }
|
---|
636 |
|
---|
637 | default:
|
---|
638 | {
|
---|
639 | return false;
|
---|
640 | }
|
---|
641 | }
|
---|
642 | }
|
---|
643 | }
|
---|
644 |
|
---|
645 | exports._getMountedRootCount = _getMountedRootCount;
|
---|
646 | exports.collectCustomHooksForSignature = collectCustomHooksForSignature;
|
---|
647 | exports.createSignatureFunctionForTransform = createSignatureFunctionForTransform;
|
---|
648 | exports.findAffectedHostInstances = findAffectedHostInstances;
|
---|
649 | exports.getFamilyByID = getFamilyByID;
|
---|
650 | exports.getFamilyByType = getFamilyByType;
|
---|
651 | exports.hasUnrecoverableErrors = hasUnrecoverableErrors;
|
---|
652 | exports.injectIntoGlobalHook = injectIntoGlobalHook;
|
---|
653 | exports.isLikelyComponentType = isLikelyComponentType;
|
---|
654 | exports.performReactRefresh = performReactRefresh;
|
---|
655 | exports.register = register;
|
---|
656 | exports.setSignature = setSignature;
|
---|
657 | })();
|
---|
658 | }
|
---|