index.js 20 KB

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  1. "use strict";
  2. exports.__esModule = true;
  3. var _keys = require("babel-runtime/core-js/object/keys");
  4. var _keys2 = _interopRequireDefault(_keys);
  5. var _create = require("babel-runtime/core-js/object/create");
  6. var _create2 = _interopRequireDefault(_create);
  7. var _getIterator2 = require("babel-runtime/core-js/get-iterator");
  8. var _getIterator3 = _interopRequireDefault(_getIterator2);
  9. var _symbol = require("babel-runtime/core-js/symbol");
  10. var _symbol2 = _interopRequireDefault(_symbol);
  11. exports.default = function () {
  12. var REASSIGN_REMAP_SKIP = (0, _symbol2.default)();
  13. var reassignmentVisitor = {
  14. ReferencedIdentifier: function ReferencedIdentifier(path) {
  15. var name = path.node.name;
  16. var remap = this.remaps[name];
  17. if (!remap) return;
  18. if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
  19. if (path.parentPath.isCallExpression({ callee: path.node })) {
  20. path.replaceWith(t.sequenceExpression([t.numericLiteral(0), remap]));
  21. } else if (path.isJSXIdentifier() && t.isMemberExpression(remap)) {
  22. var object = remap.object,
  23. property = remap.property;
  24. path.replaceWith(t.JSXMemberExpression(t.JSXIdentifier(object.name), t.JSXIdentifier(property.name)));
  25. } else {
  26. path.replaceWith(remap);
  27. }
  28. this.requeueInParent(path);
  29. },
  30. AssignmentExpression: function AssignmentExpression(path) {
  31. var node = path.node;
  32. if (node[REASSIGN_REMAP_SKIP]) return;
  33. var left = path.get("left");
  34. if (!left.isIdentifier()) return;
  35. var name = left.node.name;
  36. var exports = this.exports[name];
  37. if (!exports) return;
  38. if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
  39. node[REASSIGN_REMAP_SKIP] = true;
  40. for (var _iterator = exports, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
  41. var _ref;
  42. if (_isArray) {
  43. if (_i >= _iterator.length) break;
  44. _ref = _iterator[_i++];
  45. } else {
  46. _i = _iterator.next();
  47. if (_i.done) break;
  48. _ref = _i.value;
  49. }
  50. var reid = _ref;
  51. node = buildExportsAssignment(reid, node).expression;
  52. }
  53. path.replaceWith(node);
  54. this.requeueInParent(path);
  55. },
  56. UpdateExpression: function UpdateExpression(path) {
  57. var arg = path.get("argument");
  58. if (!arg.isIdentifier()) return;
  59. var name = arg.node.name;
  60. var exports = this.exports[name];
  61. if (!exports) return;
  62. if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
  63. var node = t.assignmentExpression(path.node.operator[0] + "=", arg.node, t.numericLiteral(1));
  64. if (path.parentPath.isExpressionStatement() && !path.isCompletionRecord() || path.node.prefix) {
  65. path.replaceWith(node);
  66. this.requeueInParent(path);
  67. return;
  68. }
  69. var nodes = [];
  70. nodes.push(node);
  71. var operator = void 0;
  72. if (path.node.operator === "--") {
  73. operator = "+";
  74. } else {
  75. operator = "-";
  76. }
  77. nodes.push(t.binaryExpression(operator, arg.node, t.numericLiteral(1)));
  78. path.replaceWithMultiple(t.sequenceExpression(nodes));
  79. }
  80. };
  81. return {
  82. inherits: require("babel-plugin-transform-strict-mode"),
  83. visitor: {
  84. ThisExpression: function ThisExpression(path, state) {
  85. if (this.ranCommonJS) return;
  86. if (state.opts.allowTopLevelThis !== true && !path.findParent(function (path) {
  87. return !path.is("shadow") && THIS_BREAK_KEYS.indexOf(path.type) >= 0;
  88. })) {
  89. path.replaceWith(t.identifier("undefined"));
  90. }
  91. },
  92. Program: {
  93. exit: function exit(path) {
  94. this.ranCommonJS = true;
  95. var strict = !!this.opts.strict;
  96. var noInterop = !!this.opts.noInterop;
  97. var scope = path.scope;
  98. scope.rename("module");
  99. scope.rename("exports");
  100. scope.rename("require");
  101. var hasExports = false;
  102. var hasImports = false;
  103. var body = path.get("body");
  104. var imports = (0, _create2.default)(null);
  105. var exports = (0, _create2.default)(null);
  106. var nonHoistedExportNames = (0, _create2.default)(null);
  107. var topNodes = [];
  108. var remaps = (0, _create2.default)(null);
  109. var requires = (0, _create2.default)(null);
  110. function addRequire(source, blockHoist) {
  111. var cached = requires[source];
  112. if (cached) return cached;
  113. var ref = path.scope.generateUidIdentifier((0, _path2.basename)(source, (0, _path2.extname)(source)));
  114. var varDecl = t.variableDeclaration("var", [t.variableDeclarator(ref, buildRequire(t.stringLiteral(source)).expression)]);
  115. if (imports[source]) {
  116. varDecl.loc = imports[source].loc;
  117. }
  118. if (typeof blockHoist === "number" && blockHoist > 0) {
  119. varDecl._blockHoist = blockHoist;
  120. }
  121. topNodes.push(varDecl);
  122. return requires[source] = ref;
  123. }
  124. function addTo(obj, key, arr) {
  125. var existing = obj[key] || [];
  126. obj[key] = existing.concat(arr);
  127. }
  128. for (var _iterator2 = body, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
  129. var _ref2;
  130. if (_isArray2) {
  131. if (_i2 >= _iterator2.length) break;
  132. _ref2 = _iterator2[_i2++];
  133. } else {
  134. _i2 = _iterator2.next();
  135. if (_i2.done) break;
  136. _ref2 = _i2.value;
  137. }
  138. var _path = _ref2;
  139. if (_path.isExportDeclaration()) {
  140. hasExports = true;
  141. var specifiers = [].concat(_path.get("declaration"), _path.get("specifiers"));
  142. for (var _iterator4 = specifiers, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : (0, _getIterator3.default)(_iterator4);;) {
  143. var _ref4;
  144. if (_isArray4) {
  145. if (_i4 >= _iterator4.length) break;
  146. _ref4 = _iterator4[_i4++];
  147. } else {
  148. _i4 = _iterator4.next();
  149. if (_i4.done) break;
  150. _ref4 = _i4.value;
  151. }
  152. var _specifier2 = _ref4;
  153. var ids = _specifier2.getBindingIdentifiers();
  154. if (ids.__esModule) {
  155. throw _specifier2.buildCodeFrameError("Illegal export \"__esModule\"");
  156. }
  157. }
  158. }
  159. if (_path.isImportDeclaration()) {
  160. var _importsEntry$specifi;
  161. hasImports = true;
  162. var key = _path.node.source.value;
  163. var importsEntry = imports[key] || {
  164. specifiers: [],
  165. maxBlockHoist: 0,
  166. loc: _path.node.loc
  167. };
  168. (_importsEntry$specifi = importsEntry.specifiers).push.apply(_importsEntry$specifi, _path.node.specifiers);
  169. if (typeof _path.node._blockHoist === "number") {
  170. importsEntry.maxBlockHoist = Math.max(_path.node._blockHoist, importsEntry.maxBlockHoist);
  171. }
  172. imports[key] = importsEntry;
  173. _path.remove();
  174. } else if (_path.isExportDefaultDeclaration()) {
  175. var declaration = _path.get("declaration");
  176. if (declaration.isFunctionDeclaration()) {
  177. var id = declaration.node.id;
  178. var defNode = t.identifier("default");
  179. if (id) {
  180. addTo(exports, id.name, defNode);
  181. topNodes.push(buildExportsAssignment(defNode, id));
  182. _path.replaceWith(declaration.node);
  183. } else {
  184. topNodes.push(buildExportsAssignment(defNode, t.toExpression(declaration.node)));
  185. _path.remove();
  186. }
  187. } else if (declaration.isClassDeclaration()) {
  188. var _id = declaration.node.id;
  189. var _defNode = t.identifier("default");
  190. if (_id) {
  191. addTo(exports, _id.name, _defNode);
  192. _path.replaceWithMultiple([declaration.node, buildExportsAssignment(_defNode, _id)]);
  193. } else {
  194. _path.replaceWith(buildExportsAssignment(_defNode, t.toExpression(declaration.node)));
  195. _path.parentPath.requeue(_path.get("expression.left"));
  196. }
  197. } else {
  198. _path.replaceWith(buildExportsAssignment(t.identifier("default"), declaration.node));
  199. _path.parentPath.requeue(_path.get("expression.left"));
  200. }
  201. } else if (_path.isExportNamedDeclaration()) {
  202. var _declaration = _path.get("declaration");
  203. if (_declaration.node) {
  204. if (_declaration.isFunctionDeclaration()) {
  205. var _id2 = _declaration.node.id;
  206. addTo(exports, _id2.name, _id2);
  207. topNodes.push(buildExportsAssignment(_id2, _id2));
  208. _path.replaceWith(_declaration.node);
  209. } else if (_declaration.isClassDeclaration()) {
  210. var _id3 = _declaration.node.id;
  211. addTo(exports, _id3.name, _id3);
  212. _path.replaceWithMultiple([_declaration.node, buildExportsAssignment(_id3, _id3)]);
  213. nonHoistedExportNames[_id3.name] = true;
  214. } else if (_declaration.isVariableDeclaration()) {
  215. var declarators = _declaration.get("declarations");
  216. for (var _iterator5 = declarators, _isArray5 = Array.isArray(_iterator5), _i5 = 0, _iterator5 = _isArray5 ? _iterator5 : (0, _getIterator3.default)(_iterator5);;) {
  217. var _ref5;
  218. if (_isArray5) {
  219. if (_i5 >= _iterator5.length) break;
  220. _ref5 = _iterator5[_i5++];
  221. } else {
  222. _i5 = _iterator5.next();
  223. if (_i5.done) break;
  224. _ref5 = _i5.value;
  225. }
  226. var decl = _ref5;
  227. var _id4 = decl.get("id");
  228. var init = decl.get("init");
  229. if (!init.node) init.replaceWith(t.identifier("undefined"));
  230. if (_id4.isIdentifier()) {
  231. addTo(exports, _id4.node.name, _id4.node);
  232. init.replaceWith(buildExportsAssignment(_id4.node, init.node).expression);
  233. nonHoistedExportNames[_id4.node.name] = true;
  234. } else {}
  235. }
  236. _path.replaceWith(_declaration.node);
  237. }
  238. continue;
  239. }
  240. var _specifiers = _path.get("specifiers");
  241. var nodes = [];
  242. var _source = _path.node.source;
  243. if (_source) {
  244. var ref = addRequire(_source.value, _path.node._blockHoist);
  245. for (var _iterator6 = _specifiers, _isArray6 = Array.isArray(_iterator6), _i6 = 0, _iterator6 = _isArray6 ? _iterator6 : (0, _getIterator3.default)(_iterator6);;) {
  246. var _ref6;
  247. if (_isArray6) {
  248. if (_i6 >= _iterator6.length) break;
  249. _ref6 = _iterator6[_i6++];
  250. } else {
  251. _i6 = _iterator6.next();
  252. if (_i6.done) break;
  253. _ref6 = _i6.value;
  254. }
  255. var _specifier3 = _ref6;
  256. if (_specifier3.isExportNamespaceSpecifier()) {} else if (_specifier3.isExportDefaultSpecifier()) {} else if (_specifier3.isExportSpecifier()) {
  257. if (!noInterop && _specifier3.node.local.name === "default") {
  258. topNodes.push(buildExportsFrom(t.stringLiteral(_specifier3.node.exported.name), t.memberExpression(t.callExpression(this.addHelper("interopRequireDefault"), [ref]), _specifier3.node.local)));
  259. } else {
  260. topNodes.push(buildExportsFrom(t.stringLiteral(_specifier3.node.exported.name), t.memberExpression(ref, _specifier3.node.local)));
  261. }
  262. nonHoistedExportNames[_specifier3.node.exported.name] = true;
  263. }
  264. }
  265. } else {
  266. for (var _iterator7 = _specifiers, _isArray7 = Array.isArray(_iterator7), _i7 = 0, _iterator7 = _isArray7 ? _iterator7 : (0, _getIterator3.default)(_iterator7);;) {
  267. var _ref7;
  268. if (_isArray7) {
  269. if (_i7 >= _iterator7.length) break;
  270. _ref7 = _iterator7[_i7++];
  271. } else {
  272. _i7 = _iterator7.next();
  273. if (_i7.done) break;
  274. _ref7 = _i7.value;
  275. }
  276. var _specifier4 = _ref7;
  277. if (_specifier4.isExportSpecifier()) {
  278. addTo(exports, _specifier4.node.local.name, _specifier4.node.exported);
  279. nonHoistedExportNames[_specifier4.node.exported.name] = true;
  280. nodes.push(buildExportsAssignment(_specifier4.node.exported, _specifier4.node.local));
  281. }
  282. }
  283. }
  284. _path.replaceWithMultiple(nodes);
  285. } else if (_path.isExportAllDeclaration()) {
  286. var exportNode = buildExportAll({
  287. OBJECT: addRequire(_path.node.source.value, _path.node._blockHoist)
  288. });
  289. exportNode.loc = _path.node.loc;
  290. topNodes.push(exportNode);
  291. _path.remove();
  292. }
  293. }
  294. for (var source in imports) {
  295. var _imports$source = imports[source],
  296. specifiers = _imports$source.specifiers,
  297. maxBlockHoist = _imports$source.maxBlockHoist;
  298. if (specifiers.length) {
  299. var uid = addRequire(source, maxBlockHoist);
  300. var wildcard = void 0;
  301. for (var i = 0; i < specifiers.length; i++) {
  302. var specifier = specifiers[i];
  303. if (t.isImportNamespaceSpecifier(specifier)) {
  304. if (strict || noInterop) {
  305. remaps[specifier.local.name] = uid;
  306. } else {
  307. var varDecl = t.variableDeclaration("var", [t.variableDeclarator(specifier.local, t.callExpression(this.addHelper("interopRequireWildcard"), [uid]))]);
  308. if (maxBlockHoist > 0) {
  309. varDecl._blockHoist = maxBlockHoist;
  310. }
  311. topNodes.push(varDecl);
  312. }
  313. wildcard = specifier.local;
  314. } else if (t.isImportDefaultSpecifier(specifier)) {
  315. specifiers[i] = t.importSpecifier(specifier.local, t.identifier("default"));
  316. }
  317. }
  318. for (var _iterator3 = specifiers, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) {
  319. var _ref3;
  320. if (_isArray3) {
  321. if (_i3 >= _iterator3.length) break;
  322. _ref3 = _iterator3[_i3++];
  323. } else {
  324. _i3 = _iterator3.next();
  325. if (_i3.done) break;
  326. _ref3 = _i3.value;
  327. }
  328. var _specifier = _ref3;
  329. if (t.isImportSpecifier(_specifier)) {
  330. var target = uid;
  331. if (_specifier.imported.name === "default") {
  332. if (wildcard) {
  333. target = wildcard;
  334. } else if (!noInterop) {
  335. target = wildcard = path.scope.generateUidIdentifier(uid.name);
  336. var _varDecl = t.variableDeclaration("var", [t.variableDeclarator(target, t.callExpression(this.addHelper("interopRequireDefault"), [uid]))]);
  337. if (maxBlockHoist > 0) {
  338. _varDecl._blockHoist = maxBlockHoist;
  339. }
  340. topNodes.push(_varDecl);
  341. }
  342. }
  343. remaps[_specifier.local.name] = t.memberExpression(target, t.cloneWithoutLoc(_specifier.imported));
  344. }
  345. }
  346. } else {
  347. var requireNode = buildRequire(t.stringLiteral(source));
  348. requireNode.loc = imports[source].loc;
  349. topNodes.push(requireNode);
  350. }
  351. }
  352. if (hasImports && (0, _keys2.default)(nonHoistedExportNames).length) {
  353. var maxHoistedExportsNodeAssignmentLength = 100;
  354. var nonHoistedExportNamesArr = (0, _keys2.default)(nonHoistedExportNames);
  355. var _loop = function _loop(currentExportsNodeAssignmentLength) {
  356. var nonHoistedExportNamesChunk = nonHoistedExportNamesArr.slice(currentExportsNodeAssignmentLength, currentExportsNodeAssignmentLength + maxHoistedExportsNodeAssignmentLength);
  357. var hoistedExportsNode = t.identifier("undefined");
  358. nonHoistedExportNamesChunk.forEach(function (name) {
  359. hoistedExportsNode = buildExportsAssignment(t.identifier(name), hoistedExportsNode).expression;
  360. });
  361. var node = t.expressionStatement(hoistedExportsNode);
  362. node._blockHoist = 3;
  363. topNodes.unshift(node);
  364. };
  365. for (var currentExportsNodeAssignmentLength = 0; currentExportsNodeAssignmentLength < nonHoistedExportNamesArr.length; currentExportsNodeAssignmentLength += maxHoistedExportsNodeAssignmentLength) {
  366. _loop(currentExportsNodeAssignmentLength);
  367. }
  368. }
  369. if (hasExports && !strict) {
  370. var buildTemplate = buildExportsModuleDeclaration;
  371. if (this.opts.loose) buildTemplate = buildLooseExportsModuleDeclaration;
  372. var declar = buildTemplate();
  373. declar._blockHoist = 3;
  374. topNodes.unshift(declar);
  375. }
  376. path.unshiftContainer("body", topNodes);
  377. path.traverse(reassignmentVisitor, {
  378. remaps: remaps,
  379. scope: scope,
  380. exports: exports,
  381. requeueInParent: function requeueInParent(newPath) {
  382. return path.requeue(newPath);
  383. }
  384. });
  385. }
  386. }
  387. }
  388. };
  389. };
  390. var _path2 = require("path");
  391. var _babelTemplate = require("babel-template");
  392. var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
  393. var _babelTypes = require("babel-types");
  394. var t = _interopRequireWildcard(_babelTypes);
  395. 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; } }
  396. function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  397. var buildRequire = (0, _babelTemplate2.default)("\n require($0);\n");
  398. var buildExportsModuleDeclaration = (0, _babelTemplate2.default)("\n Object.defineProperty(exports, \"__esModule\", {\n value: true\n });\n");
  399. var buildExportsFrom = (0, _babelTemplate2.default)("\n Object.defineProperty(exports, $0, {\n enumerable: true,\n get: function () {\n return $1;\n }\n });\n");
  400. var buildLooseExportsModuleDeclaration = (0, _babelTemplate2.default)("\n exports.__esModule = true;\n");
  401. var buildExportsAssignment = (0, _babelTemplate2.default)("\n exports.$0 = $1;\n");
  402. var buildExportAll = (0, _babelTemplate2.default)("\n Object.keys(OBJECT).forEach(function (key) {\n if (key === \"default\" || key === \"__esModule\") return;\n Object.defineProperty(exports, key, {\n enumerable: true,\n get: function () {\n return OBJECT[key];\n }\n });\n });\n");
  403. var THIS_BREAK_KEYS = ["FunctionExpression", "FunctionDeclaration", "ClassProperty", "ClassMethod", "ObjectMethod"];
  404. module.exports = exports["default"];