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 _assert = require("assert");
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8 | var _t = require("@babel/types");
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9 | var _importBuilder = require("./import-builder.js");
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10 | var _isModule = require("./is-module.js");
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11 | const {
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12 | identifier,
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13 | importSpecifier,
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14 | numericLiteral,
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15 | sequenceExpression,
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16 | isImportDeclaration
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17 | } = _t;
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18 | class ImportInjector {
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19 | constructor(path, importedSource, opts) {
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20 | this._defaultOpts = {
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21 | importedSource: null,
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22 | importedType: "commonjs",
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23 | importedInterop: "babel",
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24 | importingInterop: "babel",
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25 | ensureLiveReference: false,
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26 | ensureNoContext: false,
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27 | importPosition: "before"
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28 | };
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29 | const programPath = path.find(p => p.isProgram());
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30 | this._programPath = programPath;
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31 | this._programScope = programPath.scope;
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32 | this._hub = programPath.hub;
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33 | this._defaultOpts = this._applyDefaults(importedSource, opts, true);
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34 | }
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35 | addDefault(importedSourceIn, opts) {
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36 | return this.addNamed("default", importedSourceIn, opts);
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37 | }
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38 | addNamed(importName, importedSourceIn, opts) {
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39 | _assert(typeof importName === "string");
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40 | return this._generateImport(this._applyDefaults(importedSourceIn, opts), importName);
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41 | }
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42 | addNamespace(importedSourceIn, opts) {
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43 | return this._generateImport(this._applyDefaults(importedSourceIn, opts), null);
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44 | }
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45 | addSideEffect(importedSourceIn, opts) {
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46 | return this._generateImport(this._applyDefaults(importedSourceIn, opts), void 0);
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47 | }
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48 | _applyDefaults(importedSource, opts, isInit = false) {
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49 | let newOpts;
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50 | if (typeof importedSource === "string") {
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51 | newOpts = Object.assign({}, this._defaultOpts, {
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52 | importedSource
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53 | }, opts);
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54 | } else {
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55 | _assert(!opts, "Unexpected secondary arguments.");
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56 | newOpts = Object.assign({}, this._defaultOpts, importedSource);
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57 | }
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58 | if (!isInit && opts) {
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59 | if (opts.nameHint !== undefined) newOpts.nameHint = opts.nameHint;
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60 | if (opts.blockHoist !== undefined) newOpts.blockHoist = opts.blockHoist;
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61 | }
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62 | return newOpts;
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63 | }
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64 | _generateImport(opts, importName) {
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65 | const isDefault = importName === "default";
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66 | const isNamed = !!importName && !isDefault;
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67 | const isNamespace = importName === null;
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68 | const {
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69 | importedSource,
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70 | importedType,
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71 | importedInterop,
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72 | importingInterop,
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73 | ensureLiveReference,
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74 | ensureNoContext,
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75 | nameHint,
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76 | importPosition,
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77 | blockHoist
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78 | } = opts;
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79 | let name = nameHint || importName;
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80 | const isMod = (0, _isModule.default)(this._programPath);
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81 | const isModuleForNode = isMod && importingInterop === "node";
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82 | const isModuleForBabel = isMod && importingInterop === "babel";
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83 | if (importPosition === "after" && !isMod) {
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84 | throw new Error(`"importPosition": "after" is only supported in modules`);
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85 | }
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86 | const builder = new _importBuilder.default(importedSource, this._programScope, this._hub);
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87 | if (importedType === "es6") {
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88 | if (!isModuleForNode && !isModuleForBabel) {
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89 | throw new Error("Cannot import an ES6 module from CommonJS");
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90 | }
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91 | builder.import();
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92 | if (isNamespace) {
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93 | builder.namespace(nameHint || importedSource);
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94 | } else if (isDefault || isNamed) {
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95 | builder.named(name, importName);
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96 | }
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97 | } else if (importedType !== "commonjs") {
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98 | throw new Error(`Unexpected interopType "${importedType}"`);
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99 | } else if (importedInterop === "babel") {
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100 | if (isModuleForNode) {
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101 | name = name !== "default" ? name : importedSource;
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102 | const es6Default = `${importedSource}$es6Default`;
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103 | builder.import();
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104 | if (isNamespace) {
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105 | builder.default(es6Default).var(name || importedSource).wildcardInterop();
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106 | } else if (isDefault) {
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107 | if (ensureLiveReference) {
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108 | builder.default(es6Default).var(name || importedSource).defaultInterop().read("default");
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109 | } else {
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110 | builder.default(es6Default).var(name).defaultInterop().prop(importName);
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111 | }
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112 | } else if (isNamed) {
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113 | builder.default(es6Default).read(importName);
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114 | }
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115 | } else if (isModuleForBabel) {
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116 | builder.import();
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117 | if (isNamespace) {
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118 | builder.namespace(name || importedSource);
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119 | } else if (isDefault || isNamed) {
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120 | builder.named(name, importName);
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121 | }
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122 | } else {
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123 | builder.require();
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124 | if (isNamespace) {
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125 | builder.var(name || importedSource).wildcardInterop();
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126 | } else if ((isDefault || isNamed) && ensureLiveReference) {
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127 | if (isDefault) {
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128 | name = name !== "default" ? name : importedSource;
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129 | builder.var(name).read(importName);
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130 | builder.defaultInterop();
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131 | } else {
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132 | builder.var(importedSource).read(importName);
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133 | }
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134 | } else if (isDefault) {
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135 | builder.var(name).defaultInterop().prop(importName);
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136 | } else if (isNamed) {
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137 | builder.var(name).prop(importName);
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138 | }
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139 | }
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140 | } else if (importedInterop === "compiled") {
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141 | if (isModuleForNode) {
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142 | builder.import();
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143 | if (isNamespace) {
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144 | builder.default(name || importedSource);
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145 | } else if (isDefault || isNamed) {
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146 | builder.default(importedSource).read(name);
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147 | }
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148 | } else if (isModuleForBabel) {
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149 | builder.import();
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150 | if (isNamespace) {
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151 | builder.namespace(name || importedSource);
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152 | } else if (isDefault || isNamed) {
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153 | builder.named(name, importName);
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154 | }
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155 | } else {
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156 | builder.require();
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157 | if (isNamespace) {
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158 | builder.var(name || importedSource);
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159 | } else if (isDefault || isNamed) {
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160 | if (ensureLiveReference) {
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161 | builder.var(importedSource).read(name);
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162 | } else {
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163 | builder.prop(importName).var(name);
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164 | }
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165 | }
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166 | }
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167 | } else if (importedInterop === "uncompiled") {
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168 | if (isDefault && ensureLiveReference) {
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169 | throw new Error("No live reference for commonjs default");
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170 | }
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171 | if (isModuleForNode) {
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172 | builder.import();
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173 | if (isNamespace) {
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174 | builder.default(name || importedSource);
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175 | } else if (isDefault) {
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176 | builder.default(name);
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177 | } else if (isNamed) {
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178 | builder.default(importedSource).read(name);
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179 | }
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180 | } else if (isModuleForBabel) {
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181 | builder.import();
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182 | if (isNamespace) {
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183 | builder.default(name || importedSource);
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184 | } else if (isDefault) {
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185 | builder.default(name);
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186 | } else if (isNamed) {
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187 | builder.named(name, importName);
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188 | }
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189 | } else {
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190 | builder.require();
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191 | if (isNamespace) {
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192 | builder.var(name || importedSource);
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193 | } else if (isDefault) {
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194 | builder.var(name);
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195 | } else if (isNamed) {
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196 | if (ensureLiveReference) {
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197 | builder.var(importedSource).read(name);
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198 | } else {
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199 | builder.var(name).prop(importName);
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200 | }
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201 | }
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202 | }
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203 | } else {
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204 | throw new Error(`Unknown importedInterop "${importedInterop}".`);
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205 | }
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206 | const {
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207 | statements,
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208 | resultName
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209 | } = builder.done();
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210 | this._insertStatements(statements, importPosition, blockHoist);
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211 | if ((isDefault || isNamed) && ensureNoContext && resultName.type !== "Identifier") {
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212 | return sequenceExpression([numericLiteral(0), resultName]);
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213 | }
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214 | return resultName;
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215 | }
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216 | _insertStatements(statements, importPosition = "before", blockHoist = 3) {
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217 | if (importPosition === "after") {
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218 | if (this._insertStatementsAfter(statements)) return;
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219 | } else {
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220 | if (this._insertStatementsBefore(statements, blockHoist)) return;
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221 | }
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222 | this._programPath.unshiftContainer("body", statements);
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223 | }
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224 | _insertStatementsBefore(statements, blockHoist) {
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225 | if (statements.length === 1 && isImportDeclaration(statements[0]) && isValueImport(statements[0])) {
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226 | const firstImportDecl = this._programPath.get("body").find(p => {
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227 | return p.isImportDeclaration() && isValueImport(p.node);
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228 | });
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229 | if ((firstImportDecl == null ? void 0 : firstImportDecl.node.source.value) === statements[0].source.value && maybeAppendImportSpecifiers(firstImportDecl.node, statements[0])) {
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230 | return true;
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231 | }
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232 | }
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233 | statements.forEach(node => {
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234 | node._blockHoist = blockHoist;
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235 | });
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236 | const targetPath = this._programPath.get("body").find(p => {
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237 | const val = p.node._blockHoist;
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238 | return Number.isFinite(val) && val < 4;
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239 | });
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240 | if (targetPath) {
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241 | targetPath.insertBefore(statements);
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242 | return true;
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243 | }
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244 | return false;
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245 | }
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246 | _insertStatementsAfter(statements) {
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247 | const statementsSet = new Set(statements);
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248 | const importDeclarations = new Map();
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249 | for (const statement of statements) {
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250 | if (isImportDeclaration(statement) && isValueImport(statement)) {
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251 | const source = statement.source.value;
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252 | if (!importDeclarations.has(source)) importDeclarations.set(source, []);
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253 | importDeclarations.get(source).push(statement);
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254 | }
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255 | }
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256 | let lastImportPath = null;
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257 | for (const bodyStmt of this._programPath.get("body")) {
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258 | if (bodyStmt.isImportDeclaration() && isValueImport(bodyStmt.node)) {
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259 | lastImportPath = bodyStmt;
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260 | const source = bodyStmt.node.source.value;
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261 | const newImports = importDeclarations.get(source);
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262 | if (!newImports) continue;
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263 | for (const decl of newImports) {
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264 | if (!statementsSet.has(decl)) continue;
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265 | if (maybeAppendImportSpecifiers(bodyStmt.node, decl)) {
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266 | statementsSet.delete(decl);
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267 | }
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268 | }
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269 | }
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270 | }
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271 | if (statementsSet.size === 0) return true;
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272 | if (lastImportPath) lastImportPath.insertAfter(Array.from(statementsSet));
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273 | return !!lastImportPath;
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274 | }
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275 | }
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276 | exports.default = ImportInjector;
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277 | function isValueImport(node) {
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278 | return node.importKind !== "type" && node.importKind !== "typeof";
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279 | }
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280 | function hasNamespaceImport(node) {
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281 | return node.specifiers.length === 1 && node.specifiers[0].type === "ImportNamespaceSpecifier" || node.specifiers.length === 2 && node.specifiers[1].type === "ImportNamespaceSpecifier";
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282 | }
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283 | function hasDefaultImport(node) {
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284 | return node.specifiers.length > 0 && node.specifiers[0].type === "ImportDefaultSpecifier";
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285 | }
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286 | function maybeAppendImportSpecifiers(target, source) {
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287 | if (!target.specifiers.length) {
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288 | target.specifiers = source.specifiers;
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289 | return true;
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290 | }
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291 | if (!source.specifiers.length) return true;
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292 | if (hasNamespaceImport(target) || hasNamespaceImport(source)) return false;
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293 | if (hasDefaultImport(source)) {
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294 | if (hasDefaultImport(target)) {
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295 | source.specifiers[0] = importSpecifier(source.specifiers[0].local, identifier("default"));
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296 | } else {
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297 | target.specifiers.unshift(source.specifiers.shift());
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298 | }
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299 | }
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300 | target.specifiers.push(...source.specifiers);
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301 | return true;
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302 | }
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303 |
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304 | //# sourceMappingURL=import-injector.js.map
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