1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = void 0;
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7 | var _renamer = require("./lib/renamer.js");
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8 | var _index = require("../index.js");
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9 | var _binding = require("./binding.js");
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10 | var _globals = require("globals");
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11 | var _t = require("@babel/types");
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12 | var t = _t;
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13 | var _cache = require("../cache.js");
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14 | var _visitors = require("../visitors.js");
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15 | const {
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16 | NOT_LOCAL_BINDING,
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17 | assignmentExpression,
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18 | callExpression,
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19 | cloneNode,
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20 | getBindingIdentifiers,
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21 | identifier,
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22 | isArrayExpression,
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23 | isBinary,
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24 | isCallExpression,
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25 | isClass,
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26 | isClassBody,
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27 | isClassDeclaration,
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28 | isExportAllDeclaration,
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29 | isExportDefaultDeclaration,
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30 | isExportNamedDeclaration,
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31 | isFunctionDeclaration,
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32 | isIdentifier,
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33 | isImportDeclaration,
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34 | isLiteral,
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35 | isMemberExpression,
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36 | isMethod,
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37 | isModuleSpecifier,
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38 | isNullLiteral,
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39 | isObjectExpression,
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40 | isProperty,
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41 | isPureish,
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42 | isRegExpLiteral,
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43 | isSuper,
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44 | isTaggedTemplateExpression,
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45 | isTemplateLiteral,
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46 | isThisExpression,
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47 | isUnaryExpression,
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48 | isVariableDeclaration,
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49 | expressionStatement,
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50 | matchesPattern,
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51 | memberExpression,
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52 | numericLiteral,
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53 | toIdentifier,
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54 | variableDeclaration,
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55 | variableDeclarator,
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56 | isRecordExpression,
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57 | isTupleExpression,
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58 | isObjectProperty,
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59 | isTopicReference,
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60 | isMetaProperty,
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61 | isPrivateName,
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62 | isExportDeclaration,
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63 | buildUndefinedNode,
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64 | sequenceExpression
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65 | } = _t;
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66 | function gatherNodeParts(node, parts) {
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67 | switch (node == null ? void 0 : node.type) {
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68 | default:
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69 | if (isImportDeclaration(node) || isExportDeclaration(node)) {
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70 | var _node$specifiers;
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71 | if ((isExportAllDeclaration(node) || isExportNamedDeclaration(node) || isImportDeclaration(node)) && node.source) {
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72 | gatherNodeParts(node.source, parts);
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73 | } else if ((isExportNamedDeclaration(node) || isImportDeclaration(node)) && (_node$specifiers = node.specifiers) != null && _node$specifiers.length) {
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74 | for (const e of node.specifiers) gatherNodeParts(e, parts);
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75 | } else if ((isExportDefaultDeclaration(node) || isExportNamedDeclaration(node)) && node.declaration) {
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76 | gatherNodeParts(node.declaration, parts);
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77 | }
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78 | } else if (isModuleSpecifier(node)) {
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79 | gatherNodeParts(node.local, parts);
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80 | } else if (isLiteral(node) && !isNullLiteral(node) && !isRegExpLiteral(node) && !isTemplateLiteral(node)) {
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81 | parts.push(node.value);
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82 | }
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83 | break;
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84 | case "MemberExpression":
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85 | case "OptionalMemberExpression":
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86 | case "JSXMemberExpression":
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87 | gatherNodeParts(node.object, parts);
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88 | gatherNodeParts(node.property, parts);
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89 | break;
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90 | case "Identifier":
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91 | case "JSXIdentifier":
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92 | parts.push(node.name);
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93 | break;
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94 | case "CallExpression":
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95 | case "OptionalCallExpression":
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96 | case "NewExpression":
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97 | gatherNodeParts(node.callee, parts);
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98 | break;
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99 | case "ObjectExpression":
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100 | case "ObjectPattern":
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101 | for (const e of node.properties) {
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102 | gatherNodeParts(e, parts);
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103 | }
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104 | break;
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105 | case "SpreadElement":
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106 | case "RestElement":
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107 | gatherNodeParts(node.argument, parts);
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108 | break;
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109 | case "ObjectProperty":
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110 | case "ObjectMethod":
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111 | case "ClassProperty":
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112 | case "ClassMethod":
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113 | case "ClassPrivateProperty":
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114 | case "ClassPrivateMethod":
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115 | gatherNodeParts(node.key, parts);
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116 | break;
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117 | case "ThisExpression":
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118 | parts.push("this");
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119 | break;
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120 | case "Super":
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121 | parts.push("super");
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122 | break;
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123 | case "Import":
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124 | parts.push("import");
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125 | break;
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126 | case "DoExpression":
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127 | parts.push("do");
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128 | break;
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129 | case "YieldExpression":
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130 | parts.push("yield");
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131 | gatherNodeParts(node.argument, parts);
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132 | break;
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133 | case "AwaitExpression":
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134 | parts.push("await");
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135 | gatherNodeParts(node.argument, parts);
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136 | break;
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137 | case "AssignmentExpression":
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138 | gatherNodeParts(node.left, parts);
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139 | break;
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140 | case "VariableDeclarator":
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141 | gatherNodeParts(node.id, parts);
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142 | break;
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143 | case "FunctionExpression":
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144 | case "FunctionDeclaration":
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145 | case "ClassExpression":
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146 | case "ClassDeclaration":
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147 | gatherNodeParts(node.id, parts);
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148 | break;
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149 | case "PrivateName":
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150 | gatherNodeParts(node.id, parts);
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151 | break;
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152 | case "ParenthesizedExpression":
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153 | gatherNodeParts(node.expression, parts);
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154 | break;
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155 | case "UnaryExpression":
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156 | case "UpdateExpression":
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157 | gatherNodeParts(node.argument, parts);
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158 | break;
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159 | case "MetaProperty":
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160 | gatherNodeParts(node.meta, parts);
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161 | gatherNodeParts(node.property, parts);
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162 | break;
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163 | case "JSXElement":
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164 | gatherNodeParts(node.openingElement, parts);
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165 | break;
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166 | case "JSXOpeningElement":
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167 | gatherNodeParts(node.name, parts);
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168 | break;
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169 | case "JSXFragment":
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170 | gatherNodeParts(node.openingFragment, parts);
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171 | break;
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172 | case "JSXOpeningFragment":
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173 | parts.push("Fragment");
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174 | break;
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175 | case "JSXNamespacedName":
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176 | gatherNodeParts(node.namespace, parts);
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177 | gatherNodeParts(node.name, parts);
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178 | break;
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179 | }
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180 | }
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181 | const collectorVisitor = {
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182 | ForStatement(path) {
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183 | const declar = path.get("init");
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184 | if (declar.isVar()) {
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185 | const {
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186 | scope
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187 | } = path;
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188 | const parentScope = scope.getFunctionParent() || scope.getProgramParent();
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189 | parentScope.registerBinding("var", declar);
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190 | }
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191 | },
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192 | Declaration(path) {
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193 | if (path.isBlockScoped()) return;
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194 | if (path.isImportDeclaration()) return;
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195 | if (path.isExportDeclaration()) return;
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196 | const parent = path.scope.getFunctionParent() || path.scope.getProgramParent();
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197 | parent.registerDeclaration(path);
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198 | },
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199 | ImportDeclaration(path) {
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200 | const parent = path.scope.getBlockParent();
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201 | parent.registerDeclaration(path);
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202 | },
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203 | ReferencedIdentifier(path, state) {
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204 | state.references.push(path);
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205 | },
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206 | ForXStatement(path, state) {
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207 | const left = path.get("left");
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208 | if (left.isPattern() || left.isIdentifier()) {
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209 | state.constantViolations.push(path);
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210 | } else if (left.isVar()) {
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211 | const {
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212 | scope
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213 | } = path;
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214 | const parentScope = scope.getFunctionParent() || scope.getProgramParent();
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215 | parentScope.registerBinding("var", left);
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216 | }
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217 | },
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218 | ExportDeclaration: {
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219 | exit(path) {
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220 | const {
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221 | node,
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222 | scope
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223 | } = path;
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224 | if (isExportAllDeclaration(node)) return;
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225 | const declar = node.declaration;
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226 | if (isClassDeclaration(declar) || isFunctionDeclaration(declar)) {
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227 | const id = declar.id;
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228 | if (!id) return;
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229 | const binding = scope.getBinding(id.name);
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230 | binding == null || binding.reference(path);
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231 | } else if (isVariableDeclaration(declar)) {
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232 | for (const decl of declar.declarations) {
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233 | for (const name of Object.keys(getBindingIdentifiers(decl))) {
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234 | const binding = scope.getBinding(name);
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235 | binding == null || binding.reference(path);
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236 | }
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237 | }
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238 | }
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239 | }
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240 | },
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241 | LabeledStatement(path) {
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242 | path.scope.getBlockParent().registerDeclaration(path);
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243 | },
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244 | AssignmentExpression(path, state) {
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245 | state.assignments.push(path);
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246 | },
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247 | UpdateExpression(path, state) {
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248 | state.constantViolations.push(path);
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249 | },
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250 | UnaryExpression(path, state) {
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251 | if (path.node.operator === "delete") {
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252 | state.constantViolations.push(path);
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253 | }
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254 | },
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255 | BlockScoped(path) {
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256 | let scope = path.scope;
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257 | if (scope.path === path) scope = scope.parent;
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258 | const parent = scope.getBlockParent();
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259 | parent.registerDeclaration(path);
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260 | if (path.isClassDeclaration() && path.node.id) {
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261 | const id = path.node.id;
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262 | const name = id.name;
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263 | path.scope.bindings[name] = path.scope.parent.getBinding(name);
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264 | }
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265 | },
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266 | CatchClause(path) {
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267 | path.scope.registerBinding("let", path);
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268 | },
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269 | Function(path) {
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270 | const params = path.get("params");
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271 | for (const param of params) {
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272 | path.scope.registerBinding("param", param);
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273 | }
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274 | if (path.isFunctionExpression() && path.node.id && !path.node.id[NOT_LOCAL_BINDING]) {
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275 | path.scope.registerBinding("local", path.get("id"), path);
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276 | }
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277 | },
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278 | ClassExpression(path) {
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279 | if (path.node.id && !path.node.id[NOT_LOCAL_BINDING]) {
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280 | path.scope.registerBinding("local", path.get("id"), path);
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281 | }
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282 | },
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283 | TSTypeAnnotation(path) {
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284 | path.skip();
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285 | }
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286 | };
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287 | let uid = 0;
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288 | class Scope {
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289 | constructor(path) {
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290 | this.uid = void 0;
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291 | this.path = void 0;
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292 | this.block = void 0;
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293 | this.inited = void 0;
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294 | this.labels = void 0;
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295 | this.bindings = void 0;
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296 | this.references = void 0;
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297 | this.globals = void 0;
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298 | this.uids = void 0;
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299 | this.data = void 0;
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300 | this.crawling = void 0;
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301 | const {
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302 | node
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303 | } = path;
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304 | const cached = _cache.scope.get(node);
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305 | if ((cached == null ? void 0 : cached.path) === path) {
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306 | return cached;
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307 | }
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308 | _cache.scope.set(node, this);
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309 | this.uid = uid++;
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310 | this.block = node;
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311 | this.path = path;
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312 | this.labels = new Map();
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313 | this.inited = false;
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314 | }
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315 | get parent() {
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316 | var _parent;
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317 | let parent,
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318 | path = this.path;
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319 | do {
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320 | var _path;
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321 | const shouldSkip = path.key === "key" || path.listKey === "decorators";
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322 | path = path.parentPath;
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323 | if (shouldSkip && path.isMethod()) path = path.parentPath;
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324 | if ((_path = path) != null && _path.isScope()) parent = path;
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325 | } while (path && !parent);
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326 | return (_parent = parent) == null ? void 0 : _parent.scope;
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327 | }
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328 | generateDeclaredUidIdentifier(name) {
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329 | const id = this.generateUidIdentifier(name);
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330 | this.push({
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331 | id
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332 | });
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333 | return cloneNode(id);
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334 | }
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335 | generateUidIdentifier(name) {
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336 | return identifier(this.generateUid(name));
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337 | }
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338 | generateUid(name = "temp") {
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339 | name = toIdentifier(name).replace(/^_+/, "").replace(/\d+$/g, "");
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340 | let uid;
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341 | let i = 1;
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342 | do {
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343 | uid = `_${name}`;
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344 | if (i > 1) uid += i;
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345 | i++;
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346 | } while (this.hasLabel(uid) || this.hasBinding(uid) || this.hasGlobal(uid) || this.hasReference(uid));
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347 | const program = this.getProgramParent();
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348 | program.references[uid] = true;
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349 | program.uids[uid] = true;
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350 | return uid;
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351 | }
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352 | generateUidBasedOnNode(node, defaultName) {
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353 | const parts = [];
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354 | gatherNodeParts(node, parts);
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355 | let id = parts.join("$");
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356 | id = id.replace(/^_/, "") || defaultName || "ref";
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357 | return this.generateUid(id.slice(0, 20));
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358 | }
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359 | generateUidIdentifierBasedOnNode(node, defaultName) {
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360 | return identifier(this.generateUidBasedOnNode(node, defaultName));
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361 | }
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362 | isStatic(node) {
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363 | if (isThisExpression(node) || isSuper(node) || isTopicReference(node)) {
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364 | return true;
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365 | }
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366 | if (isIdentifier(node)) {
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367 | const binding = this.getBinding(node.name);
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368 | if (binding) {
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369 | return binding.constant;
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370 | } else {
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371 | return this.hasBinding(node.name);
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372 | }
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373 | }
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374 | return false;
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375 | }
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376 | maybeGenerateMemoised(node, dontPush) {
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377 | if (this.isStatic(node)) {
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378 | return null;
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379 | } else {
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380 | const id = this.generateUidIdentifierBasedOnNode(node);
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381 | if (!dontPush) {
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382 | this.push({
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383 | id
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384 | });
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385 | return cloneNode(id);
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386 | }
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387 | return id;
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388 | }
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389 | }
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390 | checkBlockScopedCollisions(local, kind, name, id) {
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391 | if (kind === "param") return;
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392 | if (local.kind === "local") return;
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393 | const duplicate = kind === "let" || local.kind === "let" || local.kind === "const" || local.kind === "module" || local.kind === "param" && kind === "const";
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394 | if (duplicate) {
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395 | throw this.path.hub.buildError(id, `Duplicate declaration "${name}"`, TypeError);
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396 | }
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397 | }
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398 | rename(oldName, newName) {
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399 | const binding = this.getBinding(oldName);
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400 | if (binding) {
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401 | newName || (newName = this.generateUidIdentifier(oldName).name);
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402 | const renamer = new _renamer.default(binding, oldName, newName);
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403 | {
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404 | renamer.rename(arguments[2]);
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405 | }
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406 | }
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407 | }
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408 | dump() {
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409 | const sep = "-".repeat(60);
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410 | console.log(sep);
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411 | let scope = this;
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412 | do {
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413 | console.log("#", scope.block.type);
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414 | for (const name of Object.keys(scope.bindings)) {
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415 | const binding = scope.bindings[name];
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416 | console.log(" -", name, {
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417 | constant: binding.constant,
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418 | references: binding.references,
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419 | violations: binding.constantViolations.length,
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420 | kind: binding.kind
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421 | });
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422 | }
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423 | } while (scope = scope.parent);
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424 | console.log(sep);
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425 | }
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426 | hasLabel(name) {
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427 | return !!this.getLabel(name);
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428 | }
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429 | getLabel(name) {
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430 | return this.labels.get(name);
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431 | }
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432 | registerLabel(path) {
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433 | this.labels.set(path.node.label.name, path);
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434 | }
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435 | registerDeclaration(path) {
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436 | if (path.isLabeledStatement()) {
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437 | this.registerLabel(path);
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438 | } else if (path.isFunctionDeclaration()) {
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439 | this.registerBinding("hoisted", path.get("id"), path);
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440 | } else if (path.isVariableDeclaration()) {
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441 | const declarations = path.get("declarations");
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442 | const {
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443 | kind
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444 | } = path.node;
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445 | for (const declar of declarations) {
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446 | this.registerBinding(kind === "using" || kind === "await using" ? "const" : kind, declar);
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447 | }
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448 | } else if (path.isClassDeclaration()) {
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449 | if (path.node.declare) return;
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450 | this.registerBinding("let", path);
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451 | } else if (path.isImportDeclaration()) {
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452 | const isTypeDeclaration = path.node.importKind === "type" || path.node.importKind === "typeof";
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453 | const specifiers = path.get("specifiers");
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454 | for (const specifier of specifiers) {
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455 | const isTypeSpecifier = isTypeDeclaration || specifier.isImportSpecifier() && (specifier.node.importKind === "type" || specifier.node.importKind === "typeof");
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456 | this.registerBinding(isTypeSpecifier ? "unknown" : "module", specifier);
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457 | }
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458 | } else if (path.isExportDeclaration()) {
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459 | const declar = path.get("declaration");
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460 | if (declar.isClassDeclaration() || declar.isFunctionDeclaration() || declar.isVariableDeclaration()) {
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461 | this.registerDeclaration(declar);
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462 | }
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463 | } else {
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464 | this.registerBinding("unknown", path);
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465 | }
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466 | }
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467 | buildUndefinedNode() {
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468 | return buildUndefinedNode();
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469 | }
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470 | registerConstantViolation(path) {
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471 | const ids = path.getAssignmentIdentifiers();
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472 | for (const name of Object.keys(ids)) {
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473 | var _this$getBinding;
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474 | (_this$getBinding = this.getBinding(name)) == null || _this$getBinding.reassign(path);
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475 | }
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476 | }
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477 | registerBinding(kind, path, bindingPath = path) {
|
---|
478 | if (!kind) throw new ReferenceError("no `kind`");
|
---|
479 | if (path.isVariableDeclaration()) {
|
---|
480 | const declarators = path.get("declarations");
|
---|
481 | for (const declar of declarators) {
|
---|
482 | this.registerBinding(kind, declar);
|
---|
483 | }
|
---|
484 | return;
|
---|
485 | }
|
---|
486 | const parent = this.getProgramParent();
|
---|
487 | const ids = path.getOuterBindingIdentifiers(true);
|
---|
488 | for (const name of Object.keys(ids)) {
|
---|
489 | parent.references[name] = true;
|
---|
490 | for (const id of ids[name]) {
|
---|
491 | const local = this.getOwnBinding(name);
|
---|
492 | if (local) {
|
---|
493 | if (local.identifier === id) continue;
|
---|
494 | this.checkBlockScopedCollisions(local, kind, name, id);
|
---|
495 | }
|
---|
496 | if (local) {
|
---|
497 | local.reassign(bindingPath);
|
---|
498 | } else {
|
---|
499 | this.bindings[name] = new _binding.default({
|
---|
500 | identifier: id,
|
---|
501 | scope: this,
|
---|
502 | path: bindingPath,
|
---|
503 | kind: kind
|
---|
504 | });
|
---|
505 | }
|
---|
506 | }
|
---|
507 | }
|
---|
508 | }
|
---|
509 | addGlobal(node) {
|
---|
510 | this.globals[node.name] = node;
|
---|
511 | }
|
---|
512 | hasUid(name) {
|
---|
513 | let scope = this;
|
---|
514 | do {
|
---|
515 | if (scope.uids[name]) return true;
|
---|
516 | } while (scope = scope.parent);
|
---|
517 | return false;
|
---|
518 | }
|
---|
519 | hasGlobal(name) {
|
---|
520 | let scope = this;
|
---|
521 | do {
|
---|
522 | if (scope.globals[name]) return true;
|
---|
523 | } while (scope = scope.parent);
|
---|
524 | return false;
|
---|
525 | }
|
---|
526 | hasReference(name) {
|
---|
527 | return !!this.getProgramParent().references[name];
|
---|
528 | }
|
---|
529 | isPure(node, constantsOnly) {
|
---|
530 | if (isIdentifier(node)) {
|
---|
531 | const binding = this.getBinding(node.name);
|
---|
532 | if (!binding) return false;
|
---|
533 | if (constantsOnly) return binding.constant;
|
---|
534 | return true;
|
---|
535 | } else if (isThisExpression(node) || isMetaProperty(node) || isTopicReference(node) || isPrivateName(node)) {
|
---|
536 | return true;
|
---|
537 | } else if (isClass(node)) {
|
---|
538 | var _node$decorators;
|
---|
539 | if (node.superClass && !this.isPure(node.superClass, constantsOnly)) {
|
---|
540 | return false;
|
---|
541 | }
|
---|
542 | if (((_node$decorators = node.decorators) == null ? void 0 : _node$decorators.length) > 0) {
|
---|
543 | return false;
|
---|
544 | }
|
---|
545 | return this.isPure(node.body, constantsOnly);
|
---|
546 | } else if (isClassBody(node)) {
|
---|
547 | for (const method of node.body) {
|
---|
548 | if (!this.isPure(method, constantsOnly)) return false;
|
---|
549 | }
|
---|
550 | return true;
|
---|
551 | } else if (isBinary(node)) {
|
---|
552 | return this.isPure(node.left, constantsOnly) && this.isPure(node.right, constantsOnly);
|
---|
553 | } else if (isArrayExpression(node) || isTupleExpression(node)) {
|
---|
554 | for (const elem of node.elements) {
|
---|
555 | if (elem !== null && !this.isPure(elem, constantsOnly)) return false;
|
---|
556 | }
|
---|
557 | return true;
|
---|
558 | } else if (isObjectExpression(node) || isRecordExpression(node)) {
|
---|
559 | for (const prop of node.properties) {
|
---|
560 | if (!this.isPure(prop, constantsOnly)) return false;
|
---|
561 | }
|
---|
562 | return true;
|
---|
563 | } else if (isMethod(node)) {
|
---|
564 | var _node$decorators2;
|
---|
565 | if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
|
---|
566 | if (((_node$decorators2 = node.decorators) == null ? void 0 : _node$decorators2.length) > 0) {
|
---|
567 | return false;
|
---|
568 | }
|
---|
569 | return true;
|
---|
570 | } else if (isProperty(node)) {
|
---|
571 | var _node$decorators3;
|
---|
572 | if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
|
---|
573 | if (((_node$decorators3 = node.decorators) == null ? void 0 : _node$decorators3.length) > 0) {
|
---|
574 | return false;
|
---|
575 | }
|
---|
576 | if (isObjectProperty(node) || node.static) {
|
---|
577 | if (node.value !== null && !this.isPure(node.value, constantsOnly)) {
|
---|
578 | return false;
|
---|
579 | }
|
---|
580 | }
|
---|
581 | return true;
|
---|
582 | } else if (isUnaryExpression(node)) {
|
---|
583 | return this.isPure(node.argument, constantsOnly);
|
---|
584 | } else if (isTemplateLiteral(node)) {
|
---|
585 | for (const expression of node.expressions) {
|
---|
586 | if (!this.isPure(expression, constantsOnly)) return false;
|
---|
587 | }
|
---|
588 | return true;
|
---|
589 | } else if (isTaggedTemplateExpression(node)) {
|
---|
590 | return matchesPattern(node.tag, "String.raw") && !this.hasBinding("String", {
|
---|
591 | noGlobals: true
|
---|
592 | }) && this.isPure(node.quasi, constantsOnly);
|
---|
593 | } else if (isMemberExpression(node)) {
|
---|
594 | return !node.computed && isIdentifier(node.object) && node.object.name === "Symbol" && isIdentifier(node.property) && node.property.name !== "for" && !this.hasBinding("Symbol", {
|
---|
595 | noGlobals: true
|
---|
596 | });
|
---|
597 | } else if (isCallExpression(node)) {
|
---|
598 | return matchesPattern(node.callee, "Symbol.for") && !this.hasBinding("Symbol", {
|
---|
599 | noGlobals: true
|
---|
600 | }) && node.arguments.length === 1 && t.isStringLiteral(node.arguments[0]);
|
---|
601 | } else {
|
---|
602 | return isPureish(node);
|
---|
603 | }
|
---|
604 | }
|
---|
605 | setData(key, val) {
|
---|
606 | return this.data[key] = val;
|
---|
607 | }
|
---|
608 | getData(key) {
|
---|
609 | let scope = this;
|
---|
610 | do {
|
---|
611 | const data = scope.data[key];
|
---|
612 | if (data != null) return data;
|
---|
613 | } while (scope = scope.parent);
|
---|
614 | }
|
---|
615 | removeData(key) {
|
---|
616 | let scope = this;
|
---|
617 | do {
|
---|
618 | const data = scope.data[key];
|
---|
619 | if (data != null) scope.data[key] = null;
|
---|
620 | } while (scope = scope.parent);
|
---|
621 | }
|
---|
622 | init() {
|
---|
623 | if (!this.inited) {
|
---|
624 | this.inited = true;
|
---|
625 | this.crawl();
|
---|
626 | }
|
---|
627 | }
|
---|
628 | crawl() {
|
---|
629 | const path = this.path;
|
---|
630 | this.references = Object.create(null);
|
---|
631 | this.bindings = Object.create(null);
|
---|
632 | this.globals = Object.create(null);
|
---|
633 | this.uids = Object.create(null);
|
---|
634 | this.data = Object.create(null);
|
---|
635 | const programParent = this.getProgramParent();
|
---|
636 | if (programParent.crawling) return;
|
---|
637 | const state = {
|
---|
638 | references: [],
|
---|
639 | constantViolations: [],
|
---|
640 | assignments: []
|
---|
641 | };
|
---|
642 | this.crawling = true;
|
---|
643 | if (path.type !== "Program" && (0, _visitors.isExplodedVisitor)(collectorVisitor)) {
|
---|
644 | for (const visit of collectorVisitor.enter) {
|
---|
645 | visit.call(state, path, state);
|
---|
646 | }
|
---|
647 | const typeVisitors = collectorVisitor[path.type];
|
---|
648 | if (typeVisitors) {
|
---|
649 | for (const visit of typeVisitors.enter) {
|
---|
650 | visit.call(state, path, state);
|
---|
651 | }
|
---|
652 | }
|
---|
653 | }
|
---|
654 | path.traverse(collectorVisitor, state);
|
---|
655 | this.crawling = false;
|
---|
656 | for (const path of state.assignments) {
|
---|
657 | const ids = path.getAssignmentIdentifiers();
|
---|
658 | for (const name of Object.keys(ids)) {
|
---|
659 | if (path.scope.getBinding(name)) continue;
|
---|
660 | programParent.addGlobal(ids[name]);
|
---|
661 | }
|
---|
662 | path.scope.registerConstantViolation(path);
|
---|
663 | }
|
---|
664 | for (const ref of state.references) {
|
---|
665 | const binding = ref.scope.getBinding(ref.node.name);
|
---|
666 | if (binding) {
|
---|
667 | binding.reference(ref);
|
---|
668 | } else {
|
---|
669 | programParent.addGlobal(ref.node);
|
---|
670 | }
|
---|
671 | }
|
---|
672 | for (const path of state.constantViolations) {
|
---|
673 | path.scope.registerConstantViolation(path);
|
---|
674 | }
|
---|
675 | }
|
---|
676 | push(opts) {
|
---|
677 | let path = this.path;
|
---|
678 | if (path.isPattern()) {
|
---|
679 | path = this.getPatternParent().path;
|
---|
680 | } else if (!path.isBlockStatement() && !path.isProgram()) {
|
---|
681 | path = this.getBlockParent().path;
|
---|
682 | }
|
---|
683 | if (path.isSwitchStatement()) {
|
---|
684 | path = (this.getFunctionParent() || this.getProgramParent()).path;
|
---|
685 | }
|
---|
686 | const {
|
---|
687 | init,
|
---|
688 | unique,
|
---|
689 | kind = "var",
|
---|
690 | id
|
---|
691 | } = opts;
|
---|
692 | if (!init && !unique && (kind === "var" || kind === "let") && path.isFunction() && !path.node.name && isCallExpression(path.parent, {
|
---|
693 | callee: path.node
|
---|
694 | }) && path.parent.arguments.length <= path.node.params.length && isIdentifier(id)) {
|
---|
695 | path.pushContainer("params", id);
|
---|
696 | path.scope.registerBinding("param", path.get("params")[path.node.params.length - 1]);
|
---|
697 | return;
|
---|
698 | }
|
---|
699 | if (path.isLoop() || path.isCatchClause() || path.isFunction()) {
|
---|
700 | path.ensureBlock();
|
---|
701 | path = path.get("body");
|
---|
702 | }
|
---|
703 | const blockHoist = opts._blockHoist == null ? 2 : opts._blockHoist;
|
---|
704 | const dataKey = `declaration:${kind}:${blockHoist}`;
|
---|
705 | let declarPath = !unique && path.getData(dataKey);
|
---|
706 | if (!declarPath) {
|
---|
707 | const declar = variableDeclaration(kind, []);
|
---|
708 | declar._blockHoist = blockHoist;
|
---|
709 | [declarPath] = path.unshiftContainer("body", [declar]);
|
---|
710 | if (!unique) path.setData(dataKey, declarPath);
|
---|
711 | }
|
---|
712 | const declarator = variableDeclarator(id, init);
|
---|
713 | const len = declarPath.node.declarations.push(declarator);
|
---|
714 | path.scope.registerBinding(kind, declarPath.get("declarations")[len - 1]);
|
---|
715 | }
|
---|
716 | getProgramParent() {
|
---|
717 | let scope = this;
|
---|
718 | do {
|
---|
719 | if (scope.path.isProgram()) {
|
---|
720 | return scope;
|
---|
721 | }
|
---|
722 | } while (scope = scope.parent);
|
---|
723 | throw new Error("Couldn't find a Program");
|
---|
724 | }
|
---|
725 | getFunctionParent() {
|
---|
726 | let scope = this;
|
---|
727 | do {
|
---|
728 | if (scope.path.isFunctionParent()) {
|
---|
729 | return scope;
|
---|
730 | }
|
---|
731 | } while (scope = scope.parent);
|
---|
732 | return null;
|
---|
733 | }
|
---|
734 | getBlockParent() {
|
---|
735 | let scope = this;
|
---|
736 | do {
|
---|
737 | if (scope.path.isBlockParent()) {
|
---|
738 | return scope;
|
---|
739 | }
|
---|
740 | } while (scope = scope.parent);
|
---|
741 | throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program...");
|
---|
742 | }
|
---|
743 | getPatternParent() {
|
---|
744 | let scope = this;
|
---|
745 | do {
|
---|
746 | if (!scope.path.isPattern()) {
|
---|
747 | return scope.getBlockParent();
|
---|
748 | }
|
---|
749 | } while (scope = scope.parent.parent);
|
---|
750 | throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program...");
|
---|
751 | }
|
---|
752 | getAllBindings() {
|
---|
753 | const ids = Object.create(null);
|
---|
754 | let scope = this;
|
---|
755 | do {
|
---|
756 | for (const key of Object.keys(scope.bindings)) {
|
---|
757 | if (key in ids === false) {
|
---|
758 | ids[key] = scope.bindings[key];
|
---|
759 | }
|
---|
760 | }
|
---|
761 | scope = scope.parent;
|
---|
762 | } while (scope);
|
---|
763 | return ids;
|
---|
764 | }
|
---|
765 | bindingIdentifierEquals(name, node) {
|
---|
766 | return this.getBindingIdentifier(name) === node;
|
---|
767 | }
|
---|
768 | getBinding(name) {
|
---|
769 | let scope = this;
|
---|
770 | let previousPath;
|
---|
771 | do {
|
---|
772 | const binding = scope.getOwnBinding(name);
|
---|
773 | if (binding) {
|
---|
774 | var _previousPath;
|
---|
775 | if ((_previousPath = previousPath) != null && _previousPath.isPattern() && binding.kind !== "param" && binding.kind !== "local") {} else {
|
---|
776 | return binding;
|
---|
777 | }
|
---|
778 | } else if (!binding && name === "arguments" && scope.path.isFunction() && !scope.path.isArrowFunctionExpression()) {
|
---|
779 | break;
|
---|
780 | }
|
---|
781 | previousPath = scope.path;
|
---|
782 | } while (scope = scope.parent);
|
---|
783 | }
|
---|
784 | getOwnBinding(name) {
|
---|
785 | return this.bindings[name];
|
---|
786 | }
|
---|
787 | getBindingIdentifier(name) {
|
---|
788 | var _this$getBinding2;
|
---|
789 | return (_this$getBinding2 = this.getBinding(name)) == null ? void 0 : _this$getBinding2.identifier;
|
---|
790 | }
|
---|
791 | getOwnBindingIdentifier(name) {
|
---|
792 | const binding = this.bindings[name];
|
---|
793 | return binding == null ? void 0 : binding.identifier;
|
---|
794 | }
|
---|
795 | hasOwnBinding(name) {
|
---|
796 | return !!this.getOwnBinding(name);
|
---|
797 | }
|
---|
798 | hasBinding(name, opts) {
|
---|
799 | if (!name) return false;
|
---|
800 | let scope = this;
|
---|
801 | do {
|
---|
802 | if (scope.hasOwnBinding(name)) {
|
---|
803 | return true;
|
---|
804 | }
|
---|
805 | } while (scope = scope.parent);
|
---|
806 | let noGlobals;
|
---|
807 | let noUids;
|
---|
808 | if (typeof opts === "object") {
|
---|
809 | noGlobals = opts.noGlobals;
|
---|
810 | noUids = opts.noUids;
|
---|
811 | } else if (typeof opts === "boolean") {
|
---|
812 | noGlobals = opts;
|
---|
813 | }
|
---|
814 | if (!noUids && this.hasUid(name)) return true;
|
---|
815 | if (!noGlobals && Scope.globals.includes(name)) return true;
|
---|
816 | if (!noGlobals && Scope.contextVariables.includes(name)) return true;
|
---|
817 | return false;
|
---|
818 | }
|
---|
819 | parentHasBinding(name, opts) {
|
---|
820 | var _this$parent;
|
---|
821 | return (_this$parent = this.parent) == null ? void 0 : _this$parent.hasBinding(name, opts);
|
---|
822 | }
|
---|
823 | moveBindingTo(name, scope) {
|
---|
824 | const info = this.getBinding(name);
|
---|
825 | if (info) {
|
---|
826 | info.scope.removeOwnBinding(name);
|
---|
827 | info.scope = scope;
|
---|
828 | scope.bindings[name] = info;
|
---|
829 | }
|
---|
830 | }
|
---|
831 | removeOwnBinding(name) {
|
---|
832 | delete this.bindings[name];
|
---|
833 | }
|
---|
834 | removeBinding(name) {
|
---|
835 | var _this$getBinding3;
|
---|
836 | (_this$getBinding3 = this.getBinding(name)) == null || _this$getBinding3.scope.removeOwnBinding(name);
|
---|
837 | let scope = this;
|
---|
838 | do {
|
---|
839 | if (scope.uids[name]) {
|
---|
840 | scope.uids[name] = false;
|
---|
841 | }
|
---|
842 | } while (scope = scope.parent);
|
---|
843 | }
|
---|
844 | hoistVariables(emit = id => this.push({
|
---|
845 | id
|
---|
846 | })) {
|
---|
847 | this.crawl();
|
---|
848 | const seen = new Set();
|
---|
849 | for (const name of Object.keys(this.bindings)) {
|
---|
850 | const binding = this.bindings[name];
|
---|
851 | if (!binding) continue;
|
---|
852 | const {
|
---|
853 | path
|
---|
854 | } = binding;
|
---|
855 | if (!path.isVariableDeclarator()) continue;
|
---|
856 | const {
|
---|
857 | parent,
|
---|
858 | parentPath
|
---|
859 | } = path;
|
---|
860 | if (parent.kind !== "var" || seen.has(parent)) continue;
|
---|
861 | seen.add(path.parent);
|
---|
862 | let firstId;
|
---|
863 | const init = [];
|
---|
864 | for (const decl of parent.declarations) {
|
---|
865 | var _firstId;
|
---|
866 | (_firstId = firstId) != null ? _firstId : firstId = decl.id;
|
---|
867 | if (decl.init) {
|
---|
868 | init.push(assignmentExpression("=", decl.id, decl.init));
|
---|
869 | }
|
---|
870 | const ids = Object.keys(getBindingIdentifiers(decl, false, true, true));
|
---|
871 | for (const name of ids) {
|
---|
872 | emit(identifier(name), decl.init != null);
|
---|
873 | }
|
---|
874 | }
|
---|
875 | if (parentPath.parentPath.isFor({
|
---|
876 | left: parent
|
---|
877 | })) {
|
---|
878 | parentPath.replaceWith(firstId);
|
---|
879 | } else if (init.length === 0) {
|
---|
880 | parentPath.remove();
|
---|
881 | } else {
|
---|
882 | const expr = init.length === 1 ? init[0] : sequenceExpression(init);
|
---|
883 | if (parentPath.parentPath.isForStatement({
|
---|
884 | init: parent
|
---|
885 | })) {
|
---|
886 | parentPath.replaceWith(expr);
|
---|
887 | } else {
|
---|
888 | parentPath.replaceWith(expressionStatement(expr));
|
---|
889 | }
|
---|
890 | }
|
---|
891 | }
|
---|
892 | }
|
---|
893 | }
|
---|
894 | exports.default = Scope;
|
---|
895 | Scope.globals = Object.keys(_globals.builtin);
|
---|
896 | Scope.contextVariables = ["arguments", "undefined", "Infinity", "NaN"];
|
---|
897 | {
|
---|
898 | Scope.prototype._renameFromMap = function _renameFromMap(map, oldName, newName, value) {
|
---|
899 | if (map[oldName]) {
|
---|
900 | map[newName] = value;
|
---|
901 | map[oldName] = null;
|
---|
902 | }
|
---|
903 | };
|
---|
904 | Scope.prototype.traverse = function (node, opts, state) {
|
---|
905 | (0, _index.default)(node, opts, this, state, this.path);
|
---|
906 | };
|
---|
907 | Scope.prototype._generateUid = function _generateUid(name, i) {
|
---|
908 | let id = name;
|
---|
909 | if (i > 1) id += i;
|
---|
910 | return `_${id}`;
|
---|
911 | };
|
---|
912 | Scope.prototype.toArray = function toArray(node, i, arrayLikeIsIterable) {
|
---|
913 | if (isIdentifier(node)) {
|
---|
914 | const binding = this.getBinding(node.name);
|
---|
915 | if (binding != null && binding.constant && binding.path.isGenericType("Array")) {
|
---|
916 | return node;
|
---|
917 | }
|
---|
918 | }
|
---|
919 | if (isArrayExpression(node)) {
|
---|
920 | return node;
|
---|
921 | }
|
---|
922 | if (isIdentifier(node, {
|
---|
923 | name: "arguments"
|
---|
924 | })) {
|
---|
925 | return callExpression(memberExpression(memberExpression(memberExpression(identifier("Array"), identifier("prototype")), identifier("slice")), identifier("call")), [node]);
|
---|
926 | }
|
---|
927 | let helperName;
|
---|
928 | const args = [node];
|
---|
929 | if (i === true) {
|
---|
930 | helperName = "toConsumableArray";
|
---|
931 | } else if (typeof i === "number") {
|
---|
932 | args.push(numericLiteral(i));
|
---|
933 | helperName = "slicedToArray";
|
---|
934 | } else {
|
---|
935 | helperName = "toArray";
|
---|
936 | }
|
---|
937 | if (arrayLikeIsIterable) {
|
---|
938 | args.unshift(this.path.hub.addHelper(helperName));
|
---|
939 | helperName = "maybeArrayLike";
|
---|
940 | }
|
---|
941 | return callExpression(this.path.hub.addHelper(helperName), args);
|
---|
942 | };
|
---|
943 | Scope.prototype.getAllBindingsOfKind = function getAllBindingsOfKind(...kinds) {
|
---|
944 | const ids = Object.create(null);
|
---|
945 | for (const kind of kinds) {
|
---|
946 | let scope = this;
|
---|
947 | do {
|
---|
948 | for (const name of Object.keys(scope.bindings)) {
|
---|
949 | const binding = scope.bindings[name];
|
---|
950 | if (binding.kind === kind) ids[name] = binding;
|
---|
951 | }
|
---|
952 | scope = scope.parent;
|
---|
953 | } while (scope);
|
---|
954 | }
|
---|
955 | return ids;
|
---|
956 | };
|
---|
957 | Object.defineProperties(Scope.prototype, {
|
---|
958 | parentBlock: {
|
---|
959 | configurable: true,
|
---|
960 | enumerable: true,
|
---|
961 | get() {
|
---|
962 | return this.path.parent;
|
---|
963 | }
|
---|
964 | },
|
---|
965 | hub: {
|
---|
966 | configurable: true,
|
---|
967 | enumerable: true,
|
---|
968 | get() {
|
---|
969 | return this.path.hub;
|
---|
970 | }
|
---|
971 | }
|
---|
972 | });
|
---|
973 | }
|
---|
974 |
|
---|
975 | //# sourceMappingURL=index.js.map
|
---|