1 | ;
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2 |
|
3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.recursivePatternCapture = recursivePatternCapture;
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7 |
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8 | var _fs = require('fs');
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9 |
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10 | var _fs2 = _interopRequireDefault(_fs);
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11 |
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12 | var _doctrine = require('doctrine');
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13 |
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14 | var _doctrine2 = _interopRequireDefault(_doctrine);
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15 |
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16 | var _debug = require('debug');
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17 |
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18 | var _debug2 = _interopRequireDefault(_debug);
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19 |
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20 | var _parse = require('eslint-module-utils/parse');
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21 |
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22 | var _parse2 = _interopRequireDefault(_parse);
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23 |
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24 | var _resolve = require('eslint-module-utils/resolve');
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25 |
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26 | var _resolve2 = _interopRequireDefault(_resolve);
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27 |
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28 | var _ignore = require('eslint-module-utils/ignore');
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29 |
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30 | var _ignore2 = _interopRequireDefault(_ignore);
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31 |
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32 | var _hash = require('eslint-module-utils/hash');
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33 |
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34 | var _unambiguous = require('eslint-module-utils/unambiguous');
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35 |
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36 | var unambiguous = _interopRequireWildcard(_unambiguous);
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37 |
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38 | function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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39 |
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40 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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41 |
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42 | const log = (0, _debug2.default)('eslint-plugin-import:ExportMap');
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43 |
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44 | const exportCache = new Map();
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45 |
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46 | class ExportMap {
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47 | constructor(path) {
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48 | this.path = path;
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49 | this.namespace = new Map();
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50 | // todo: restructure to key on path, value is resolver + map of names
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51 | this.reexports = new Map();
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52 | /**
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53 | * star-exports
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54 | * @type {Set} of () => ExportMap
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55 | */
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56 | this.dependencies = new Set();
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57 | /**
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58 | * dependencies of this module that are not explicitly re-exported
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59 | * @type {Map} from path = () => ExportMap
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60 | */
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61 | this.imports = new Map();
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62 | this.errors = [];
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63 | }
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64 |
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65 | get hasDefault() {
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66 | return this.get('default') != null;
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67 | } // stronger than this.has
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68 |
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69 | get size() {
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70 | let size = this.namespace.size + this.reexports.size;
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71 | this.dependencies.forEach(dep => {
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72 | const d = dep();
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73 | // CJS / ignored dependencies won't exist (#717)
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74 | if (d == null) return;
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75 | size += d.size;
|
76 | });
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77 | return size;
|
78 | }
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79 |
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80 | /**
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81 | * Note that this does not check explicitly re-exported names for existence
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82 | * in the base namespace, but it will expand all `export * from '...'` exports
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83 | * if not found in the explicit namespace.
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84 | * @param {string} name
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85 | * @return {Boolean} true if `name` is exported by this module.
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86 | */
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87 | has(name) {
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88 | if (this.namespace.has(name)) return true;
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89 | if (this.reexports.has(name)) return true;
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90 |
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91 | // default exports must be explicitly re-exported (#328)
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92 | if (name !== 'default') {
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93 | for (let dep of this.dependencies) {
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94 | let innerMap = dep();
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95 |
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96 | // todo: report as unresolved?
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97 | if (!innerMap) continue;
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98 |
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99 | if (innerMap.has(name)) return true;
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100 | }
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101 | }
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102 |
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103 | return false;
|
104 | }
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105 |
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106 | /**
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107 | * ensure that imported name fully resolves.
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108 | * @param {[type]} name [description]
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109 | * @return {Boolean} [description]
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110 | */
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111 | hasDeep(name) {
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112 | if (this.namespace.has(name)) return { found: true, path: [this] };
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113 |
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114 | if (this.reexports.has(name)) {
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115 | const reexports = this.reexports.get(name),
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116 | imported = reexports.getImport();
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117 |
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118 | // if import is ignored, return explicit 'null'
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119 | if (imported == null) return { found: true, path: [this]
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120 |
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121 | // safeguard against cycles, only if name matches
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122 | };if (imported.path === this.path && reexports.local === name) {
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123 | return { found: false, path: [this] };
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124 | }
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125 |
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126 | const deep = imported.hasDeep(reexports.local);
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127 | deep.path.unshift(this);
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128 |
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129 | return deep;
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130 | }
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131 |
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132 | // default exports must be explicitly re-exported (#328)
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133 | if (name !== 'default') {
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134 | for (let dep of this.dependencies) {
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135 | let innerMap = dep();
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136 | // todo: report as unresolved?
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137 | if (!innerMap) continue;
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138 |
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139 | // safeguard against cycles
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140 | if (innerMap.path === this.path) continue;
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141 |
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142 | let innerValue = innerMap.hasDeep(name);
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143 | if (innerValue.found) {
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144 | innerValue.path.unshift(this);
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145 | return innerValue;
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146 | }
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147 | }
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148 | }
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149 |
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150 | return { found: false, path: [this] };
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151 | }
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152 |
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153 | get(name) {
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154 | if (this.namespace.has(name)) return this.namespace.get(name);
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155 |
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156 | if (this.reexports.has(name)) {
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157 | const reexports = this.reexports.get(name),
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158 | imported = reexports.getImport();
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159 |
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160 | // if import is ignored, return explicit 'null'
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161 | if (imported == null) return null;
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162 |
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163 | // safeguard against cycles, only if name matches
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164 | if (imported.path === this.path && reexports.local === name) return undefined;
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165 |
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166 | return imported.get(reexports.local);
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167 | }
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168 |
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169 | // default exports must be explicitly re-exported (#328)
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170 | if (name !== 'default') {
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171 | for (let dep of this.dependencies) {
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172 | let innerMap = dep();
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173 | // todo: report as unresolved?
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174 | if (!innerMap) continue;
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175 |
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176 | // safeguard against cycles
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177 | if (innerMap.path === this.path) continue;
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178 |
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179 | let innerValue = innerMap.get(name);
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180 | if (innerValue !== undefined) return innerValue;
|
181 | }
|
182 | }
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183 |
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184 | return undefined;
|
185 | }
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186 |
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187 | forEach(callback, thisArg) {
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188 | this.namespace.forEach((v, n) => callback.call(thisArg, v, n, this));
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189 |
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190 | this.reexports.forEach((reexports, name) => {
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191 | const reexported = reexports.getImport();
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192 | // can't look up meta for ignored re-exports (#348)
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193 | callback.call(thisArg, reexported && reexported.get(reexports.local), name, this);
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194 | });
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195 |
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196 | this.dependencies.forEach(dep => {
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197 | const d = dep();
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198 | // CJS / ignored dependencies won't exist (#717)
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199 | if (d == null) return;
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200 |
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201 | d.forEach((v, n) => n !== 'default' && callback.call(thisArg, v, n, this));
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202 | });
|
203 | }
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204 |
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205 | // todo: keys, values, entries?
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206 |
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207 | reportErrors(context, declaration) {
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208 | context.report({
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209 | node: declaration.source,
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210 | message: `Parse errors in imported module '${declaration.source.value}': ` + `${this.errors.map(e => `${e.message} (${e.lineNumber}:${e.column})`).join(', ')}`
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211 | });
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212 | }
|
213 | }
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214 |
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215 | exports.default = ExportMap; /**
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216 | * parse docs from the first node that has leading comments
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217 | * @param {...[type]} nodes [description]
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218 | * @return {{doc: object}}
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219 | */
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220 |
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221 | function captureDoc(docStyleParsers) {
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222 | const metadata = {},
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223 | nodes = Array.prototype.slice.call(arguments, 1);
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224 |
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225 | // 'some' short-circuits on first 'true'
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226 | nodes.some(n => {
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227 | if (!n.leadingComments) return false;
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228 |
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229 | for (let name in docStyleParsers) {
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230 | const doc = docStyleParsers[name](n.leadingComments);
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231 | if (doc) {
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232 | metadata.doc = doc;
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233 | }
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234 | }
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235 |
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236 | return true;
|
237 | });
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238 |
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239 | return metadata;
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240 | }
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241 |
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242 | const availableDocStyleParsers = {
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243 | jsdoc: captureJsDoc,
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244 | tomdoc: captureTomDoc
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245 |
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246 | /**
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247 | * parse JSDoc from leading comments
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248 | * @param {...[type]} comments [description]
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249 | * @return {{doc: object}}
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250 | */
|
251 | };function captureJsDoc(comments) {
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252 | let doc;
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253 |
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254 | // capture XSDoc
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255 | comments.forEach(comment => {
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256 | // skip non-block comments
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257 | if (comment.value.slice(0, 4) !== '*\n *') return;
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258 | try {
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259 | doc = _doctrine2.default.parse(comment.value, { unwrap: true });
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260 | } catch (err) {
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261 | /* don't care, for now? maybe add to `errors?` */
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262 | }
|
263 | });
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264 |
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265 | return doc;
|
266 | }
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267 |
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268 | /**
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269 | * parse TomDoc section from comments
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270 | */
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271 | function captureTomDoc(comments) {
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272 | // collect lines up to first paragraph break
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273 | const lines = [];
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274 | for (let i = 0; i < comments.length; i++) {
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275 | const comment = comments[i];
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276 | if (comment.value.match(/^\s*$/)) break;
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277 | lines.push(comment.value.trim());
|
278 | }
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279 |
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280 | // return doctrine-like object
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281 | const statusMatch = lines.join(' ').match(/^(Public|Internal|Deprecated):\s*(.+)/);
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282 | if (statusMatch) {
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283 | return {
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284 | description: statusMatch[2],
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285 | tags: [{
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286 | title: statusMatch[1].toLowerCase(),
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287 | description: statusMatch[2]
|
288 | }]
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289 | };
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290 | }
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291 | }
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292 |
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293 | ExportMap.get = function (source, context) {
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294 | const path = (0, _resolve2.default)(source, context);
|
295 | if (path == null) return null;
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296 |
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297 | return ExportMap.for(childContext(path, context));
|
298 | };
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299 |
|
300 | ExportMap.for = function (context) {
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301 | const path = context.path;
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302 |
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303 |
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304 | const cacheKey = (0, _hash.hashObject)(context).digest('hex');
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305 | let exportMap = exportCache.get(cacheKey);
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306 |
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307 | // return cached ignore
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308 | if (exportMap === null) return null;
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309 |
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310 | const stats = _fs2.default.statSync(path);
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311 | if (exportMap != null) {
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312 | // date equality check
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313 | if (exportMap.mtime - stats.mtime === 0) {
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314 | return exportMap;
|
315 | }
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316 | // future: check content equality?
|
317 | }
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318 |
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319 | // check valid extensions first
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320 | if (!(0, _ignore.hasValidExtension)(path, context)) {
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321 | exportCache.set(cacheKey, null);
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322 | return null;
|
323 | }
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324 |
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325 | const content = _fs2.default.readFileSync(path, { encoding: 'utf8' });
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326 |
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327 | // check for and cache ignore
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328 | if ((0, _ignore2.default)(path, context) || !unambiguous.test(content)) {
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329 | log('ignored path due to unambiguous regex or ignore settings:', path);
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330 | exportCache.set(cacheKey, null);
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331 | return null;
|
332 | }
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333 |
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334 | log('cache miss', cacheKey, 'for path', path);
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335 | exportMap = ExportMap.parse(path, content, context);
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336 |
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337 | // ambiguous modules return null
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338 | if (exportMap == null) return null;
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339 |
|
340 | exportMap.mtime = stats.mtime;
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341 |
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342 | exportCache.set(cacheKey, exportMap);
|
343 | return exportMap;
|
344 | };
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345 |
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346 | ExportMap.parse = function (path, content, context) {
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347 | var m = new ExportMap(path);
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348 |
|
349 | try {
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350 | var ast = (0, _parse2.default)(path, content, context);
|
351 | } catch (err) {
|
352 | log('parse error:', path, err);
|
353 | m.errors.push(err);
|
354 | return m; // can't continue
|
355 | }
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356 |
|
357 | if (!unambiguous.isModule(ast)) return null;
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358 |
|
359 | const docstyle = context.settings && context.settings['import/docstyle'] || ['jsdoc'];
|
360 | const docStyleParsers = {};
|
361 | docstyle.forEach(style => {
|
362 | docStyleParsers[style] = availableDocStyleParsers[style];
|
363 | });
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364 |
|
365 | // attempt to collect module doc
|
366 | if (ast.comments) {
|
367 | ast.comments.some(c => {
|
368 | if (c.type !== 'Block') return false;
|
369 | try {
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370 | const doc = _doctrine2.default.parse(c.value, { unwrap: true });
|
371 | if (doc.tags.some(t => t.title === 'module')) {
|
372 | m.doc = doc;
|
373 | return true;
|
374 | }
|
375 | } catch (err) {/* ignore */}
|
376 | return false;
|
377 | });
|
378 | }
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379 |
|
380 | const namespaces = new Map();
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381 |
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382 | function remotePath(value) {
|
383 | return _resolve2.default.relative(value, path, context.settings);
|
384 | }
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385 |
|
386 | function resolveImport(value) {
|
387 | const rp = remotePath(value);
|
388 | if (rp == null) return null;
|
389 | return ExportMap.for(childContext(rp, context));
|
390 | }
|
391 |
|
392 | function getNamespace(identifier) {
|
393 | if (!namespaces.has(identifier.name)) return;
|
394 |
|
395 | return function () {
|
396 | return resolveImport(namespaces.get(identifier.name));
|
397 | };
|
398 | }
|
399 |
|
400 | function addNamespace(object, identifier) {
|
401 | const nsfn = getNamespace(identifier);
|
402 | if (nsfn) {
|
403 | Object.defineProperty(object, 'namespace', { get: nsfn });
|
404 | }
|
405 |
|
406 | return object;
|
407 | }
|
408 |
|
409 | function captureDependency(declaration) {
|
410 | if (declaration.source == null) return null;
|
411 |
|
412 | const p = remotePath(declaration.source.value);
|
413 | if (p == null) return null;
|
414 | const existing = m.imports.get(p);
|
415 | if (existing != null) return existing.getter;
|
416 |
|
417 | const getter = () => ExportMap.for(childContext(p, context));
|
418 | m.imports.set(p, {
|
419 | getter,
|
420 | source: { // capturing actual node reference holds full AST in memory!
|
421 | value: declaration.source.value,
|
422 | loc: declaration.source.loc
|
423 | }
|
424 | });
|
425 | return getter;
|
426 | }
|
427 |
|
428 | ast.body.forEach(function (n) {
|
429 |
|
430 | if (n.type === 'ExportDefaultDeclaration') {
|
431 | const exportMeta = captureDoc(docStyleParsers, n);
|
432 | if (n.declaration.type === 'Identifier') {
|
433 | addNamespace(exportMeta, n.declaration);
|
434 | }
|
435 | m.namespace.set('default', exportMeta);
|
436 | return;
|
437 | }
|
438 |
|
439 | if (n.type === 'ExportAllDeclaration') {
|
440 | const getter = captureDependency(n);
|
441 | if (getter) m.dependencies.add(getter);
|
442 | return;
|
443 | }
|
444 |
|
445 | // capture namespaces in case of later export
|
446 | if (n.type === 'ImportDeclaration') {
|
447 | captureDependency(n);
|
448 | let ns;
|
449 | if (n.specifiers.some(s => s.type === 'ImportNamespaceSpecifier' && (ns = s))) {
|
450 | namespaces.set(ns.local.name, n.source.value);
|
451 | }
|
452 | return;
|
453 | }
|
454 |
|
455 | if (n.type === 'ExportNamedDeclaration') {
|
456 | // capture declaration
|
457 | if (n.declaration != null) {
|
458 | switch (n.declaration.type) {
|
459 | case 'FunctionDeclaration':
|
460 | case 'ClassDeclaration':
|
461 | case 'TypeAlias': // flowtype with babel-eslint parser
|
462 | case 'InterfaceDeclaration':
|
463 | case 'TSEnumDeclaration':
|
464 | case 'TSInterfaceDeclaration':
|
465 | case 'TSAbstractClassDeclaration':
|
466 | case 'TSModuleDeclaration':
|
467 | m.namespace.set(n.declaration.id.name, captureDoc(docStyleParsers, n));
|
468 | break;
|
469 | case 'VariableDeclaration':
|
470 | n.declaration.declarations.forEach(d => recursivePatternCapture(d.id, id => m.namespace.set(id.name, captureDoc(docStyleParsers, d, n))));
|
471 | break;
|
472 | }
|
473 | }
|
474 |
|
475 | const nsource = n.source && n.source.value;
|
476 | n.specifiers.forEach(s => {
|
477 | const exportMeta = {};
|
478 | let local;
|
479 |
|
480 | switch (s.type) {
|
481 | case 'ExportDefaultSpecifier':
|
482 | if (!n.source) return;
|
483 | local = 'default';
|
484 | break;
|
485 | case 'ExportNamespaceSpecifier':
|
486 | m.namespace.set(s.exported.name, Object.defineProperty(exportMeta, 'namespace', {
|
487 | get() {
|
488 | return resolveImport(nsource);
|
489 | }
|
490 | }));
|
491 | return;
|
492 | case 'ExportSpecifier':
|
493 | if (!n.source) {
|
494 | m.namespace.set(s.exported.name, addNamespace(exportMeta, s.local));
|
495 | return;
|
496 | }
|
497 | // else falls through
|
498 | default:
|
499 | local = s.local.name;
|
500 | break;
|
501 | }
|
502 |
|
503 | // todo: JSDoc
|
504 | m.reexports.set(s.exported.name, { local, getImport: () => resolveImport(nsource) });
|
505 | });
|
506 | }
|
507 | });
|
508 |
|
509 | return m;
|
510 | };
|
511 |
|
512 | /**
|
513 | * Traverse a pattern/identifier node, calling 'callback'
|
514 | * for each leaf identifier.
|
515 | * @param {node} pattern
|
516 | * @param {Function} callback
|
517 | * @return {void}
|
518 | */
|
519 | function recursivePatternCapture(pattern, callback) {
|
520 | switch (pattern.type) {
|
521 | case 'Identifier':
|
522 | // base case
|
523 | callback(pattern);
|
524 | break;
|
525 |
|
526 | case 'ObjectPattern':
|
527 | pattern.properties.forEach(p => {
|
528 | recursivePatternCapture(p.value, callback);
|
529 | });
|
530 | break;
|
531 |
|
532 | case 'ArrayPattern':
|
533 | pattern.elements.forEach(element => {
|
534 | if (element == null) return;
|
535 | recursivePatternCapture(element, callback);
|
536 | });
|
537 | break;
|
538 | }
|
539 | }
|
540 |
|
541 | /**
|
542 | * don't hold full context object in memory, just grab what we need.
|
543 | */
|
544 | function childContext(path, context) {
|
545 | const settings = context.settings,
|
546 | parserOptions = context.parserOptions,
|
547 | parserPath = context.parserPath;
|
548 |
|
549 | return {
|
550 | settings,
|
551 | parserOptions,
|
552 | parserPath,
|
553 | path
|
554 | };
|
555 | }
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556 | //# 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fs from 'fs'\n\nimport doctrine from 'doctrine'\n\nimport debug from 'debug'\n\nimport parse from 'eslint-module-utils/parse'\nimport resolve from 'eslint-module-utils/resolve'\nimport isIgnored, { hasValidExtension } from 'eslint-module-utils/ignore'\n\nimport { hashObject } from 'eslint-module-utils/hash'\nimport * as unambiguous from 'eslint-module-utils/unambiguous'\n\nconst log = debug('eslint-plugin-import:ExportMap')\n\nconst exportCache = new Map()\n\nexport default class ExportMap {\n  constructor(path) {\n    this.path = path\n    this.namespace = new Map()\n    // todo: restructure to key on path, value is resolver + map of names\n    this.reexports = new Map()\n    /**\n     * star-exports\n     * @type {Set} of () => ExportMap\n     */\n    this.dependencies = new Set()\n    /**\n     * dependencies of this module that are not explicitly re-exported\n     * @type {Map} from path = () => ExportMap\n     */\n    this.imports = new Map()\n    this.errors = []\n  }\n\n  get hasDefault() { return this.get('default') != null } // stronger than this.has\n\n  get size() {\n    let size = this.namespace.size + this.reexports.size\n    this.dependencies.forEach(dep => {\n      const d = dep()\n      // CJS / ignored dependencies won't exist (#717)\n      if (d == null) return\n      size += d.size\n    })\n    return size\n  }\n\n  /**\n   * Note that this does not check explicitly re-exported names for existence\n   * in the base namespace, but it will expand all `export * from '...'` exports\n   * if not found in the explicit namespace.\n   * @param  {string}  name\n   * @return {Boolean} true if `name` is exported by this module.\n   */\n  has(name) {\n    if (this.namespace.has(name)) return true\n    if (this.reexports.has(name)) return true\n\n    // default exports must be explicitly re-exported (#328)\n    if (name !== 'default') {\n      for (let dep of this.dependencies) {\n        let innerMap = dep()\n\n        // todo: report as unresolved?\n        if (!innerMap) continue\n\n        if (innerMap.has(name)) return true\n      }\n    }\n\n    return false\n  }\n\n  /**\n   * ensure that imported name fully resolves.\n   * @param  {[type]}  name [description]\n   * @return {Boolean}      [description]\n   */\n  hasDeep(name) {\n    if (this.namespace.has(name)) return { found: true, path: [this] }\n\n    if (this.reexports.has(name)) {\n      const reexports = this.reexports.get(name)\n          , imported = reexports.getImport()\n\n      // if import is ignored, return explicit 'null'\n      if (imported == null) return { found: true, path: [this] }\n\n      // safeguard against cycles, only if name matches\n      if (imported.path === this.path && reexports.local === name) {\n        return { found: false, path: [this] }\n      }\n\n      const deep = imported.hasDeep(reexports.local)\n      deep.path.unshift(this)\n\n      return deep\n    }\n\n\n    // default exports must be explicitly re-exported (#328)\n    if (name !== 'default') {\n      for (let dep of this.dependencies) {\n        let innerMap = dep()\n        // todo: report as unresolved?\n        if (!innerMap) continue\n\n        // safeguard against cycles\n        if (innerMap.path === this.path) continue\n\n        let innerValue = innerMap.hasDeep(name)\n        if (innerValue.found) {\n          innerValue.path.unshift(this)\n          return innerValue\n        }\n      }\n    }\n\n    return { found: false, path: [this] }\n  }\n\n  get(name) {\n    if (this.namespace.has(name)) return this.namespace.get(name)\n\n    if (this.reexports.has(name)) {\n      const reexports = this.reexports.get(name)\n          , imported = reexports.getImport()\n\n      // if import is ignored, return explicit 'null'\n      if (imported == null) return null\n\n      // safeguard against cycles, only if name matches\n      if (imported.path === this.path && reexports.local === name) return undefined\n\n      return imported.get(reexports.local)\n    }\n\n    // default exports must be explicitly re-exported (#328)\n    if (name !== 'default') {\n      for (let dep of this.dependencies) {\n        let innerMap = dep()\n        // todo: report as unresolved?\n        if (!innerMap) continue\n\n        // safeguard against cycles\n        if (innerMap.path === this.path) continue\n\n        let innerValue = innerMap.get(name)\n        if (innerValue !== undefined) return innerValue\n      }\n    }\n\n    return undefined\n  }\n\n  forEach(callback, thisArg) {\n    this.namespace.forEach((v, n) =>\n      callback.call(thisArg, v, n, this))\n\n    this.reexports.forEach((reexports, name) => {\n      const reexported = reexports.getImport()\n      // can't look up meta for ignored re-exports (#348)\n      callback.call(thisArg, reexported && reexported.get(reexports.local), name, this)\n    })\n\n    this.dependencies.forEach(dep => {\n      const d = dep()\n      // CJS / ignored dependencies won't exist (#717)\n      if (d == null) return\n\n      d.forEach((v, n) =>\n        n !== 'default' && callback.call(thisArg, v, n, this))\n    })\n  }\n\n  // todo: keys, values, entries?\n\n  reportErrors(context, declaration) {\n    context.report({\n      node: declaration.source,\n      message: `Parse errors in imported module '${declaration.source.value}': ` +\n                  `${this.errors\n                        .map(e => `${e.message} (${e.lineNumber}:${e.column})`)\n                        .join(', ')}`,\n    })\n  }\n}\n\n/**\n * parse docs from the first node that has leading comments\n * @param  {...[type]} nodes [description]\n * @return {{doc: object}}\n */\nfunction captureDoc(docStyleParsers) {\n  const metadata = {}\n       , nodes = Array.prototype.slice.call(arguments, 1)\n\n  // 'some' short-circuits on first 'true'\n  nodes.some(n => {\n    if (!n.leadingComments) return false\n\n    for (let name in docStyleParsers) {\n      const doc = docStyleParsers[name](n.leadingComments)\n      if (doc) {\n        metadata.doc = doc\n      }\n    }\n\n    return true\n  })\n\n  return metadata\n}\n\nconst availableDocStyleParsers = {\n  jsdoc: captureJsDoc,\n  tomdoc: captureTomDoc,\n}\n\n/**\n * parse JSDoc from leading comments\n * @param  {...[type]} comments [description]\n * @return {{doc: object}}\n */\nfunction captureJsDoc(comments) {\n  let doc\n\n  // capture XSDoc\n  comments.forEach(comment => {\n    // skip non-block comments\n    if (comment.value.slice(0, 4) !== '*\\n *') return\n    try {\n      doc = doctrine.parse(comment.value, { unwrap: true })\n    } catch (err) {\n      /* don't care, for now? maybe add to `errors?` */\n    }\n  })\n\n  return doc\n}\n\n/**\n  * parse TomDoc section from comments\n  */\nfunction captureTomDoc(comments) {\n  // collect lines up to first paragraph break\n  const lines = []\n  for (let i = 0; i < comments.length; i++) {\n    const comment = comments[i]\n    if (comment.value.match(/^\\s*$/)) break\n    lines.push(comment.value.trim())\n  }\n\n  // return doctrine-like object\n  const statusMatch = lines.join(' ').match(/^(Public|Internal|Deprecated):\\s*(.+)/)\n  if (statusMatch) {\n    return {\n      description: statusMatch[2],\n      tags: [{\n        title: statusMatch[1].toLowerCase(),\n        description: statusMatch[2],\n      }],\n    }\n  }\n}\n\nExportMap.get = function (source, context) {\n  const path = resolve(source, context)\n  if (path == null) return null\n\n  return ExportMap.for(childContext(path, context))\n}\n\nExportMap.for = function (context) {\n  const { path } = context\n\n  const cacheKey = hashObject(context).digest('hex')\n  let exportMap = exportCache.get(cacheKey)\n\n  // return cached ignore\n  if (exportMap === null) return null\n\n  const stats = fs.statSync(path)\n  if (exportMap != null) {\n    // date equality check\n    if (exportMap.mtime - stats.mtime === 0) {\n      return exportMap\n    }\n    // future: check content equality?\n  }\n\n  // check valid extensions first\n  if (!hasValidExtension(path, context)) {\n    exportCache.set(cacheKey, null)\n    return null\n  }\n\n  const content = fs.readFileSync(path, { encoding: 'utf8' })\n\n  // check for and cache ignore\n  if (isIgnored(path, context) || !unambiguous.test(content)) {\n    log('ignored path due to unambiguous regex or ignore settings:', path)\n    exportCache.set(cacheKey, null)\n    return null\n  }\n\n  log('cache miss', cacheKey, 'for path', path)\n  exportMap = ExportMap.parse(path, content, context)\n\n  // ambiguous modules return null\n  if (exportMap == null) return null\n\n  exportMap.mtime = stats.mtime\n\n  exportCache.set(cacheKey, exportMap)\n  return exportMap\n}\n\n\nExportMap.parse = function (path, content, context) {\n  var m = new ExportMap(path)\n\n  try {\n    var ast = parse(path, content, context)\n  } catch (err) {\n    log('parse error:', path, err)\n    m.errors.push(err)\n    return m // can't continue\n  }\n\n  if (!unambiguous.isModule(ast)) return null\n\n  const docstyle = (context.settings && context.settings['import/docstyle']) || ['jsdoc']\n  const docStyleParsers = {}\n  docstyle.forEach(style => {\n    docStyleParsers[style] = availableDocStyleParsers[style]\n  })\n\n  // attempt to collect module doc\n  if (ast.comments) {\n    ast.comments.some(c => {\n      if (c.type !== 'Block') return false\n      try {\n        const doc = doctrine.parse(c.value, { unwrap: true })\n        if (doc.tags.some(t => t.title === 'module')) {\n          m.doc = doc\n          return true\n        }\n      } catch (err) { /* ignore */ }\n      return false\n    })\n  }\n\n  const namespaces = new Map()\n\n  function remotePath(value) {\n    return resolve.relative(value, path, context.settings)\n  }\n\n  function resolveImport(value) {\n    const rp = remotePath(value)\n    if (rp == null) return null\n    return ExportMap.for(childContext(rp, context))\n  }\n\n  function getNamespace(identifier) {\n    if (!namespaces.has(identifier.name)) return\n\n    return function () {\n      return resolveImport(namespaces.get(identifier.name))\n    }\n  }\n\n  function addNamespace(object, identifier) {\n    const nsfn = getNamespace(identifier)\n    if (nsfn) {\n      Object.defineProperty(object, 'namespace', { get: nsfn })\n    }\n\n    return object\n  }\n\n  function captureDependency(declaration) {\n    if (declaration.source == null) return null\n\n    const p = remotePath(declaration.source.value)\n    if (p == null) return null\n    const existing = m.imports.get(p)\n    if (existing != null) return existing.getter\n\n    const getter = () => ExportMap.for(childContext(p, context))\n    m.imports.set(p, {\n      getter,\n      source: {  // capturing actual node reference holds full AST in memory!\n        value: declaration.source.value,\n        loc: declaration.source.loc,\n      },\n    })\n    return getter\n  }\n\n\n  ast.body.forEach(function (n) {\n\n    if (n.type === 'ExportDefaultDeclaration') {\n      const exportMeta = captureDoc(docStyleParsers, n)\n      if (n.declaration.type === 'Identifier') {\n        addNamespace(exportMeta, n.declaration)\n      }\n      m.namespace.set('default', exportMeta)\n      return\n    }\n\n    if (n.type === 'ExportAllDeclaration') {\n      const getter = captureDependency(n)\n      if (getter) m.dependencies.add(getter)\n      return\n    }\n\n    // capture namespaces in case of later export\n    if (n.type === 'ImportDeclaration') {\n      captureDependency(n)\n      let ns\n      if (n.specifiers.some(s => s.type === 'ImportNamespaceSpecifier' && (ns = s))) {\n        namespaces.set(ns.local.name, n.source.value)\n      }\n      return\n    }\n\n    if (n.type === 'ExportNamedDeclaration') {\n      // capture declaration\n      if (n.declaration != null) {\n        switch (n.declaration.type) {\n          case 'FunctionDeclaration':\n          case 'ClassDeclaration':\n          case 'TypeAlias': // flowtype with babel-eslint parser\n          case 'InterfaceDeclaration':\n          case 'TSEnumDeclaration':\n          case 'TSInterfaceDeclaration':\n          case 'TSAbstractClassDeclaration':\n          case 'TSModuleDeclaration':\n            m.namespace.set(n.declaration.id.name, captureDoc(docStyleParsers, n))\n            break\n          case 'VariableDeclaration':\n            n.declaration.declarations.forEach((d) =>\n              recursivePatternCapture(d.id,\n                id => m.namespace.set(id.name, captureDoc(docStyleParsers, d, n))))\n            break\n        }\n      }\n\n      const nsource = n.source && n.source.value\n      n.specifiers.forEach((s) => {\n        const exportMeta = {}\n        let local\n\n        switch (s.type) {\n          case 'ExportDefaultSpecifier':\n            if (!n.source) return\n            local = 'default'\n            break\n          case 'ExportNamespaceSpecifier':\n            m.namespace.set(s.exported.name, Object.defineProperty(exportMeta, 'namespace', {\n              get() { return resolveImport(nsource) },\n            }))\n            return\n          case 'ExportSpecifier':\n            if (!n.source) {\n              m.namespace.set(s.exported.name, addNamespace(exportMeta, s.local))\n              return\n            }\n            // else falls through\n          default:\n            local = s.local.name\n            break\n        }\n\n        // todo: JSDoc\n        m.reexports.set(s.exported.name, { local, getImport: () => resolveImport(nsource) })\n      })\n    }\n  })\n\n  return m\n}\n\n\n/**\n * Traverse a pattern/identifier node, calling 'callback'\n * for each leaf identifier.\n * @param  {node}   pattern\n * @param  {Function} callback\n * @return {void}\n */\nexport function recursivePatternCapture(pattern, callback) {\n  switch (pattern.type) {\n    case 'Identifier': // base case\n      callback(pattern)\n      break\n\n    case 'ObjectPattern':\n      pattern.properties.forEach(p => {\n        recursivePatternCapture(p.value, callback)\n      })\n      break\n\n    case 'ArrayPattern':\n      pattern.elements.forEach((element) => {\n        if (element == null) return\n        recursivePatternCapture(element, callback)\n      })\n      break\n  }\n}\n\n/**\n * don't hold full context object in memory, just grab what we need.\n */\nfunction childContext(path, context) {\n  const { settings, parserOptions, parserPath } = context\n  return {\n    settings,\n    parserOptions,\n    parserPath,\n    path,\n  }\n}\n"]} |
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