1 | "use strict";
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2 |
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8 |
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9 | Object.defineProperty(exports, "__esModule", { value: true });
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10 | exports.createVirtualAstObject = exports.unescapeKey = exports.escapeKey = void 0;
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11 | const stableStringify = require('fast-json-stable-stringify');
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12 | function findNode(parent, p) {
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13 | if (parent.kind === 'object') {
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14 | const entry = parent.properties.find((entry) => entry.key.value === p);
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15 | if (entry) {
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16 | return { node: entry.value, parent: entry };
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17 | }
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18 | }
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19 | else {
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20 | const index = Number(p);
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21 | if (!isNaN(index)) {
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22 | return { node: parent.elements[index], parent };
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23 | }
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24 | }
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25 | return { parent };
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26 | }
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27 | function createPropertyDescriptor(value) {
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28 | return {
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29 | configurable: true,
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30 | enumerable: true,
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31 | writable: true,
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32 | value,
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33 | };
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34 | }
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35 | function escapeKey(key) {
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36 | if (typeof key === 'number') {
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37 | return key;
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38 | }
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39 | return key.replace('~', '~0').replace('/', '~1');
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40 | }
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41 | exports.escapeKey = escapeKey;
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42 | function unescapeKey(key) {
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43 | if (typeof key === 'number') {
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44 | return key;
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45 | }
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46 | return key.replace('~1', '/').replace('~0', '~');
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47 | }
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48 | exports.unescapeKey = unescapeKey;
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49 | function createVirtualAstObject(root, options = {}) {
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50 | const reporter = (path, parent, node, old, current) => {
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51 | if (options.listener) {
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52 | if (old === current || stableStringify(old) === stableStringify(current)) {
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53 | return;
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54 | }
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55 | const op = old === undefined ? 'add' : current === undefined ? 'remove' : 'replace';
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56 | options.listener(op, path, parent, current);
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57 | }
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58 | };
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59 | return create(root, '', reporter, new Set(options.exclude), options.include && options.include.length > 0 ? new Set(options.include) : undefined, options.base);
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60 | }
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61 | exports.createVirtualAstObject = createVirtualAstObject;
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62 | function create(ast, path, reporter, excluded = new Set(), included, base) {
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63 | const cache = new Map();
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64 | const alteredNodes = new Set();
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65 | if (!base) {
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66 | if (ast.kind === 'object') {
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67 | base = Object.create(null);
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68 | }
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69 | else {
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70 | base = [];
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71 | base.length = ast.elements.length;
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72 | }
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73 | }
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74 | return new Proxy(base, {
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75 | getOwnPropertyDescriptor(target, p) {
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76 | const descriptor = Reflect.getOwnPropertyDescriptor(target, p);
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77 | if (descriptor || typeof p === 'symbol') {
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78 | return descriptor;
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79 | }
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80 | else if (excluded.has(p) || (included && !included.has(p))) {
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81 | return undefined;
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82 | }
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83 | const propertyPath = path + '/' + escapeKey(p);
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84 | const cacheEntry = cache.get(propertyPath);
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85 | if (cacheEntry) {
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86 | if (cacheEntry.value !== undefined) {
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87 | return createPropertyDescriptor(cacheEntry.value);
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88 | }
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89 | return undefined;
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90 | }
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91 | const { node } = findNode(ast, p);
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92 | if (node) {
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93 | return createPropertyDescriptor(node.value);
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94 | }
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95 | return undefined;
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96 | },
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97 | has(target, p) {
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98 | if (Reflect.has(target, p)) {
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99 | return true;
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100 | }
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101 | else if (typeof p === 'symbol' || excluded.has(p)) {
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102 | return false;
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103 | }
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104 | return cache.has(path + '/' + escapeKey(p)) || findNode(ast, p) !== undefined;
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105 | },
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106 | get(target, p) {
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107 | if (typeof p === 'symbol' || Reflect.has(target, p)) {
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108 | return Reflect.get(target, p);
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109 | }
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110 | else if (excluded.has(p) || (included && !included.has(p))) {
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111 | return undefined;
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112 | }
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113 | const propertyPath = path + '/' + escapeKey(p);
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114 | const cacheEntry = cache.get(propertyPath);
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115 | if (cacheEntry) {
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116 | return cacheEntry.value;
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117 | }
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118 | const { node, parent } = findNode(ast, p);
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119 | let value;
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120 | if (node) {
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121 | if (node.kind === 'object' || node.kind === 'array') {
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122 | value = create(node, propertyPath, (path, parent, vnode, old, current) => {
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123 | if (!alteredNodes.has(node)) {
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124 | reporter(path, parent, vnode, old, current);
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125 | }
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126 | });
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127 | }
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128 | else {
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129 | value = node.value;
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130 | }
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131 | cache.set(propertyPath, { node, parent, value });
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132 | }
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133 | return value;
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134 | },
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135 | set(target, p, value) {
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136 | if (value === undefined) {
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137 |
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138 |
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139 | return this.deleteProperty(target, p);
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140 | }
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141 | if (typeof p === 'symbol' || Reflect.has(target, p)) {
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142 | return Reflect.set(target, p, value);
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143 | }
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144 | else if (excluded.has(p) || (included && !included.has(p))) {
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145 | return false;
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146 | }
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147 |
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148 | const jsonValue = value;
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149 | const propertyPath = path + '/' + escapeKey(p);
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150 | const cacheEntry = cache.get(propertyPath);
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151 | if (cacheEntry) {
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152 | const oldValue = cacheEntry.value;
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153 | cacheEntry.value = value;
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154 | if (cacheEntry.node && oldValue !== value) {
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155 | alteredNodes.add(cacheEntry.node);
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156 | }
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157 | reporter(propertyPath, cacheEntry.parent, cacheEntry.node, oldValue, jsonValue);
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158 | }
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159 | else {
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160 | const { node, parent } = findNode(ast, p);
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161 | cache.set(propertyPath, { node, parent, value: value });
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162 | if (node && node.value !== value) {
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163 | alteredNodes.add(node);
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164 | }
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165 | reporter(propertyPath, parent, node, node && node.value, value);
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166 | }
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167 | return true;
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168 | },
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169 | deleteProperty(target, p) {
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170 | if (typeof p === 'symbol' || Reflect.has(target, p)) {
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171 | return Reflect.deleteProperty(target, p);
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172 | }
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173 | else if (excluded.has(p) || (included && !included.has(p))) {
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174 | return false;
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175 | }
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176 | const propertyPath = path + '/' + escapeKey(p);
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177 | const cacheEntry = cache.get(propertyPath);
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178 | if (cacheEntry) {
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179 | const oldValue = cacheEntry.value;
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180 | cacheEntry.value = undefined;
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181 | if (cacheEntry.node) {
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182 | alteredNodes.add(cacheEntry.node);
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183 | }
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184 | if (cacheEntry.parent.kind === 'keyvalue') {
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185 |
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186 | reporter(propertyPath, ast, cacheEntry.node, oldValue, undefined);
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187 | }
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188 | else {
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189 | reporter(propertyPath, cacheEntry.parent, cacheEntry.node, oldValue, undefined);
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190 | }
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191 | }
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192 | else {
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193 | const { node, parent } = findNode(ast, p);
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194 | if (node) {
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195 | cache.set(propertyPath, { node, parent, value: undefined });
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196 | alteredNodes.add(node);
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197 | if (parent.kind === 'keyvalue') {
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198 |
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199 | reporter(propertyPath, ast, node, node && node.value, undefined);
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200 | }
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201 | else {
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202 | reporter(propertyPath, parent, node, node && node.value, undefined);
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203 | }
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204 | }
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205 | }
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206 | return true;
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207 | },
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208 | defineProperty(target, p, attributes) {
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209 | if (typeof p === 'symbol') {
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210 | return Reflect.defineProperty(target, p, attributes);
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211 | }
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212 | return false;
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213 | },
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214 | ownKeys(target) {
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215 | let keys;
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216 | if (ast.kind === 'object') {
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217 | keys = ast.properties
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218 | .map((entry) => entry.key.value)
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219 | .filter((p) => !excluded.has(p) && (!included || included.has(p)));
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220 | }
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221 | else {
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222 | keys = [];
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223 | }
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224 | for (const key of cache.keys()) {
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225 | const relativeKey = key.substr(path.length + 1);
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226 | if (relativeKey.length > 0 && !relativeKey.includes('/')) {
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227 | keys.push(`${unescapeKey(relativeKey)}`);
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228 | }
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229 | }
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230 | return [...new Set([...keys, ...Reflect.ownKeys(target)])];
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231 | },
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232 | });
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233 | }
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