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 | exports.getExportSpecifierName = getExportSpecifierName;
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8 |
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9 | var _helperPluginUtils = require("@babel/helper-plugin-utils");
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10 |
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11 | var _helperHoistVariables = require("@babel/helper-hoist-variables");
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12 |
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13 | var _core = require("@babel/core");
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14 |
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15 | var _utils = require("babel-plugin-dynamic-import-node/utils");
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16 |
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17 | var _helperModuleTransforms = require("@babel/helper-module-transforms");
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18 |
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19 | var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
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20 |
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21 | const buildTemplate = (0, _core.template)(`
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22 | SYSTEM_REGISTER(MODULE_NAME, SOURCES, function (EXPORT_IDENTIFIER, CONTEXT_IDENTIFIER) {
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23 | "use strict";
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24 | BEFORE_BODY;
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25 | return {
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26 | setters: SETTERS,
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27 | execute: EXECUTE,
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28 | };
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29 | });
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30 | `);
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31 | const buildExportAll = (0, _core.template)(`
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32 | for (var KEY in TARGET) {
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33 | if (KEY !== "default" && KEY !== "__esModule") EXPORT_OBJ[KEY] = TARGET[KEY];
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34 | }
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35 | `);
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36 | const MISSING_PLUGIN_WARNING = `\
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37 | WARNING: Dynamic import() transformation must be enabled using the
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38 | @babel/plugin-proposal-dynamic-import plugin. Babel 8 will
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39 | no longer transform import() without using that plugin.
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40 | `;
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41 | const MISSING_PLUGIN_ERROR = `\
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42 | ERROR: Dynamic import() transformation must be enabled using the
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43 | @babel/plugin-proposal-dynamic-import plugin. Babel 8
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44 | no longer transforms import() without using that plugin.
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45 | `;
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46 |
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47 | function getExportSpecifierName(node, stringSpecifiers) {
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48 | if (node.type === "Identifier") {
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49 | return node.name;
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50 | } else if (node.type === "StringLiteral") {
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51 | const stringValue = node.value;
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52 |
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53 | if (!(0, _helperValidatorIdentifier.isIdentifierName)(stringValue)) {
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54 | stringSpecifiers.add(stringValue);
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55 | }
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56 |
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57 | return stringValue;
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58 | } else {
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59 | throw new Error(`Expected export specifier to be either Identifier or StringLiteral, got ${node.type}`);
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60 | }
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61 | }
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62 |
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63 | function constructExportCall(path, exportIdent, exportNames, exportValues, exportStarTarget, stringSpecifiers) {
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64 | const statements = [];
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65 |
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66 | if (!exportStarTarget) {
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67 | if (exportNames.length === 1) {
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68 | statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.stringLiteral(exportNames[0]), exportValues[0]])));
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69 | } else {
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70 | const objectProperties = [];
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71 |
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72 | for (let i = 0; i < exportNames.length; i++) {
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73 | const exportName = exportNames[i];
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74 | const exportValue = exportValues[i];
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75 | objectProperties.push(_core.types.objectProperty(stringSpecifiers.has(exportName) ? _core.types.stringLiteral(exportName) : _core.types.identifier(exportName), exportValue));
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76 | }
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77 |
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78 | statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.objectExpression(objectProperties)])));
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79 | }
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80 | } else {
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81 | const exportObj = path.scope.generateUid("exportObj");
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82 | statements.push(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(exportObj), _core.types.objectExpression([]))]));
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83 | statements.push(buildExportAll({
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84 | KEY: path.scope.generateUidIdentifier("key"),
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85 | EXPORT_OBJ: _core.types.identifier(exportObj),
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86 | TARGET: exportStarTarget
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87 | }));
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88 |
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89 | for (let i = 0; i < exportNames.length; i++) {
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90 | const exportName = exportNames[i];
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91 | const exportValue = exportValues[i];
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92 | statements.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.memberExpression(_core.types.identifier(exportObj), _core.types.identifier(exportName)), exportValue)));
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93 | }
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94 |
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95 | statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.identifier(exportObj)])));
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96 | }
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97 |
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98 | return statements;
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99 | }
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100 |
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101 | var _default = (0, _helperPluginUtils.declare)((api, options) => {
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102 | api.assertVersion(7);
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103 | const {
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104 | systemGlobal = "System",
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105 | allowTopLevelThis = false
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106 | } = options;
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107 | const IGNORE_REASSIGNMENT_SYMBOL = Symbol();
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108 | const reassignmentVisitor = {
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109 | "AssignmentExpression|UpdateExpression"(path) {
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110 | if (path.node[IGNORE_REASSIGNMENT_SYMBOL]) return;
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111 | path.node[IGNORE_REASSIGNMENT_SYMBOL] = true;
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112 | const arg = path.get(path.isAssignmentExpression() ? "left" : "argument");
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113 |
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114 | if (arg.isObjectPattern() || arg.isArrayPattern()) {
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115 | const exprs = [path.node];
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116 |
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117 | for (const name of Object.keys(arg.getBindingIdentifiers())) {
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118 | if (this.scope.getBinding(name) !== path.scope.getBinding(name)) {
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119 | return;
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120 | }
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121 |
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122 | const exportedNames = this.exports[name];
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123 | if (!exportedNames) return;
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124 |
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125 | for (const exportedName of exportedNames) {
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126 | exprs.push(this.buildCall(exportedName, _core.types.identifier(name)).expression);
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127 | }
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128 | }
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129 |
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130 | path.replaceWith(_core.types.sequenceExpression(exprs));
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131 | return;
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132 | }
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133 |
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134 | if (!arg.isIdentifier()) return;
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135 | const name = arg.node.name;
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136 | if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
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137 | const exportedNames = this.exports[name];
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138 | if (!exportedNames) return;
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139 | let node = path.node;
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140 | const isPostUpdateExpression = path.isUpdateExpression({
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141 | prefix: false
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142 | });
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143 |
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144 | if (isPostUpdateExpression) {
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145 | node = _core.types.binaryExpression(node.operator[0], _core.types.unaryExpression("+", _core.types.cloneNode(node.argument)), _core.types.numericLiteral(1));
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146 | }
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147 |
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148 | for (const exportedName of exportedNames) {
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149 | node = this.buildCall(exportedName, node).expression;
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150 | }
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151 |
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152 | if (isPostUpdateExpression) {
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153 | node = _core.types.sequenceExpression([node, path.node]);
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154 | }
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155 |
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156 | path.replaceWith(node);
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157 | }
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158 |
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159 | };
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160 | return {
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161 | name: "transform-modules-systemjs",
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162 |
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163 | pre() {
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164 | this.file.set("@babel/plugin-transform-modules-*", "systemjs");
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165 | },
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166 |
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167 | visitor: {
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168 | CallExpression(path, state) {
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169 | if (_core.types.isImport(path.node.callee)) {
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170 | if (!this.file.has("@babel/plugin-proposal-dynamic-import")) {
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171 | {
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172 | console.warn(MISSING_PLUGIN_WARNING);
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173 | }
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174 | }
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175 |
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176 | path.replaceWith(_core.types.callExpression(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("import")), [(0, _utils.getImportSource)(_core.types, path.node)]));
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177 | }
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178 | },
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179 |
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180 | MetaProperty(path, state) {
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181 | if (path.node.meta.name === "import" && path.node.property.name === "meta") {
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182 | path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("meta")));
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183 | }
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184 | },
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185 |
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186 | ReferencedIdentifier(path, state) {
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187 | if (path.node.name === "__moduleName" && !path.scope.hasBinding("__moduleName")) {
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188 | path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("id")));
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189 | }
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190 | },
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191 |
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192 | Program: {
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193 | enter(path, state) {
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194 | state.contextIdent = path.scope.generateUid("context");
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195 | state.stringSpecifiers = new Set();
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196 |
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197 | if (!allowTopLevelThis) {
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198 | (0, _helperModuleTransforms.rewriteThis)(path);
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199 | }
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200 | },
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201 |
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202 | exit(path, state) {
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203 | const scope = path.scope;
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204 | const exportIdent = scope.generateUid("export");
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205 | const {
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206 | contextIdent,
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207 | stringSpecifiers
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208 | } = state;
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209 | const exportMap = Object.create(null);
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210 | const modules = [];
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211 | const beforeBody = [];
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212 | const setters = [];
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213 | const sources = [];
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214 | const variableIds = [];
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215 | const removedPaths = [];
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216 |
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217 | function addExportName(key, val) {
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218 | exportMap[key] = exportMap[key] || [];
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219 | exportMap[key].push(val);
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220 | }
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221 |
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222 | function pushModule(source, key, specifiers) {
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223 | let module;
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224 | modules.forEach(function (m) {
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225 | if (m.key === source) {
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226 | module = m;
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227 | }
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228 | });
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229 |
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230 | if (!module) {
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231 | modules.push(module = {
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232 | key: source,
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233 | imports: [],
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234 | exports: []
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235 | });
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236 | }
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237 |
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238 | module[key] = module[key].concat(specifiers);
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239 | }
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240 |
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241 | function buildExportCall(name, val) {
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242 | return _core.types.expressionStatement(_core.types.callExpression(_core.types.identifier(exportIdent), [_core.types.stringLiteral(name), val]));
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243 | }
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244 |
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245 | const exportNames = [];
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246 | const exportValues = [];
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247 | const body = path.get("body");
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248 |
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249 | for (const path of body) {
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250 | if (path.isFunctionDeclaration()) {
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251 | beforeBody.push(path.node);
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252 | removedPaths.push(path);
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253 | } else if (path.isClassDeclaration()) {
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254 | variableIds.push(_core.types.cloneNode(path.node.id));
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255 | path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(path.node.id), _core.types.toExpression(path.node))));
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256 | } else if (path.isImportDeclaration()) {
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257 | const source = path.node.source.value;
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258 | pushModule(source, "imports", path.node.specifiers);
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259 |
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260 | for (const name of Object.keys(path.getBindingIdentifiers())) {
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261 | scope.removeBinding(name);
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262 | variableIds.push(_core.types.identifier(name));
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263 | }
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264 |
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265 | path.remove();
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266 | } else if (path.isExportAllDeclaration()) {
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267 | pushModule(path.node.source.value, "exports", path.node);
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268 | path.remove();
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269 | } else if (path.isExportDefaultDeclaration()) {
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270 | const declar = path.get("declaration");
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271 | const id = declar.node.id;
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272 |
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273 | if (declar.isClassDeclaration()) {
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274 | if (id) {
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275 | exportNames.push("default");
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276 | exportValues.push(scope.buildUndefinedNode());
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277 | variableIds.push(_core.types.cloneNode(id));
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278 | addExportName(id.name, "default");
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279 | path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(id), _core.types.toExpression(declar.node))));
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280 | } else {
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281 | exportNames.push("default");
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282 | exportValues.push(_core.types.toExpression(declar.node));
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283 | removedPaths.push(path);
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284 | }
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285 | } else if (declar.isFunctionDeclaration()) {
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286 | if (id) {
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287 | beforeBody.push(declar.node);
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288 | exportNames.push("default");
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289 | exportValues.push(_core.types.cloneNode(id));
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290 | addExportName(id.name, "default");
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291 | } else {
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292 | exportNames.push("default");
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293 | exportValues.push(_core.types.toExpression(declar.node));
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294 | }
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295 |
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296 | removedPaths.push(path);
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297 | } else {
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298 | path.replaceWith(buildExportCall("default", declar.node));
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299 | }
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300 | } else if (path.isExportNamedDeclaration()) {
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301 | const declar = path.get("declaration");
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302 |
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303 | if (declar.node) {
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304 | path.replaceWith(declar);
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305 |
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306 | if (path.isFunction()) {
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307 | const node = declar.node;
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308 | const name = node.id.name;
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309 | addExportName(name, name);
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310 | beforeBody.push(node);
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311 | exportNames.push(name);
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312 | exportValues.push(_core.types.cloneNode(node.id));
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313 | removedPaths.push(path);
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314 | } else if (path.isClass()) {
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315 | const name = declar.node.id.name;
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316 | exportNames.push(name);
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317 | exportValues.push(scope.buildUndefinedNode());
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318 | variableIds.push(_core.types.cloneNode(declar.node.id));
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319 | path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(declar.node.id), _core.types.toExpression(declar.node))));
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320 | addExportName(name, name);
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321 | } else {
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322 | for (const name of Object.keys(declar.getBindingIdentifiers())) {
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323 | addExportName(name, name);
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324 | }
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325 | }
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326 | } else {
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327 | const specifiers = path.node.specifiers;
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328 |
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329 | if (specifiers != null && specifiers.length) {
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330 | if (path.node.source) {
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331 | pushModule(path.node.source.value, "exports", specifiers);
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332 | path.remove();
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333 | } else {
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334 | const nodes = [];
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335 |
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336 | for (const specifier of specifiers) {
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337 | const {
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338 | local,
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339 | exported
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340 | } = specifier;
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341 | const binding = scope.getBinding(local.name);
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342 | const exportedName = getExportSpecifierName(exported, stringSpecifiers);
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343 |
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344 | if (binding && _core.types.isFunctionDeclaration(binding.path.node)) {
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345 | exportNames.push(exportedName);
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346 | exportValues.push(_core.types.cloneNode(local));
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347 | } else if (!binding) {
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348 | nodes.push(buildExportCall(exportedName, local));
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349 | }
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350 |
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351 | addExportName(local.name, exportedName);
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352 | }
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353 |
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354 | path.replaceWithMultiple(nodes);
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355 | }
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356 | } else {
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357 | path.remove();
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358 | }
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359 | }
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360 | }
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361 | }
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362 |
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363 | modules.forEach(function (specifiers) {
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364 | const setterBody = [];
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365 | const target = scope.generateUid(specifiers.key);
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366 |
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367 | for (let specifier of specifiers.imports) {
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368 | if (_core.types.isImportNamespaceSpecifier(specifier)) {
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369 | setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.identifier(target))));
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370 | } else if (_core.types.isImportDefaultSpecifier(specifier)) {
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371 | specifier = _core.types.importSpecifier(specifier.local, _core.types.identifier("default"));
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372 | }
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373 |
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374 | if (_core.types.isImportSpecifier(specifier)) {
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375 | const {
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376 | imported
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377 | } = specifier;
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378 | setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.memberExpression(_core.types.identifier(target), specifier.imported, imported.type === "StringLiteral"))));
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379 | }
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380 | }
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381 |
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382 | if (specifiers.exports.length) {
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383 | const exportNames = [];
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384 | const exportValues = [];
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385 | let hasExportStar = false;
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386 |
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387 | for (const node of specifiers.exports) {
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388 | if (_core.types.isExportAllDeclaration(node)) {
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389 | hasExportStar = true;
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390 | } else if (_core.types.isExportSpecifier(node)) {
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391 | const exportedName = getExportSpecifierName(node.exported, stringSpecifiers);
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392 | exportNames.push(exportedName);
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393 | exportValues.push(_core.types.memberExpression(_core.types.identifier(target), node.local, _core.types.isStringLiteral(node.local)));
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394 | } else {}
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395 | }
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396 |
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397 | setterBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, hasExportStar ? _core.types.identifier(target) : null, stringSpecifiers));
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398 | }
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399 |
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400 | sources.push(_core.types.stringLiteral(specifiers.key));
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401 | setters.push(_core.types.functionExpression(null, [_core.types.identifier(target)], _core.types.blockStatement(setterBody)));
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402 | });
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403 | let moduleName = (0, _helperModuleTransforms.getModuleName)(this.file.opts, options);
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404 | if (moduleName) moduleName = _core.types.stringLiteral(moduleName);
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405 | (0, _helperHoistVariables.default)(path, (id, name, hasInit) => {
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406 | variableIds.push(id);
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407 |
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408 | if (!hasInit && name in exportMap) {
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409 | for (const exported of exportMap[name]) {
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410 | exportNames.push(exported);
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411 | exportValues.push(scope.buildUndefinedNode());
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412 | }
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413 | }
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414 | }, null);
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415 |
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416 | if (variableIds.length) {
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417 | beforeBody.unshift(_core.types.variableDeclaration("var", variableIds.map(id => _core.types.variableDeclarator(id))));
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418 | }
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419 |
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420 | if (exportNames.length) {
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421 | beforeBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, null, stringSpecifiers));
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422 | }
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423 |
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424 | path.traverse(reassignmentVisitor, {
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425 | exports: exportMap,
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426 | buildCall: buildExportCall,
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427 | scope
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428 | });
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429 |
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430 | for (const path of removedPaths) {
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431 | path.remove();
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432 | }
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433 |
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434 | let hasTLA = false;
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435 | path.traverse({
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436 | AwaitExpression(path) {
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437 | hasTLA = true;
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438 | path.stop();
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439 | },
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440 |
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441 | Function(path) {
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442 | path.skip();
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443 | },
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444 |
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445 | noScope: true
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446 | });
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447 | path.node.body = [buildTemplate({
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448 | SYSTEM_REGISTER: _core.types.memberExpression(_core.types.identifier(systemGlobal), _core.types.identifier("register")),
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449 | BEFORE_BODY: beforeBody,
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450 | MODULE_NAME: moduleName,
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451 | SETTERS: _core.types.arrayExpression(setters),
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452 | EXECUTE: _core.types.functionExpression(null, [], _core.types.blockStatement(path.node.body), false, hasTLA),
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453 | SOURCES: _core.types.arrayExpression(sources),
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454 | EXPORT_IDENTIFIER: _core.types.identifier(exportIdent),
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455 | CONTEXT_IDENTIFIER: _core.types.identifier(contextIdent)
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456 | })];
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457 | }
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458 |
|
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459 | }
|
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460 | }
|
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461 | };
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462 | });
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463 |
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464 | exports.default = _default; |
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