source: trip-planner-front/node_modules/@babel/plugin-transform-modules-systemjs/lib/index.js@ eed0bf8

Last change on this file since eed0bf8 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit
  • Property mode set to 100644
File size: 17.6 KB
Line 
1"use strict";
2
3Object.defineProperty(exports, "__esModule", {
4 value: true
5});
6exports.getExportSpecifierName = getExportSpecifierName;
7exports.default = void 0;
8
9var _helperPluginUtils = require("@babel/helper-plugin-utils");
10
11var _helperHoistVariables = require("@babel/helper-hoist-variables");
12
13var _core = require("@babel/core");
14
15var _utils = require("babel-plugin-dynamic-import-node/utils");
16
17var _helperModuleTransforms = require("@babel/helper-module-transforms");
18
19var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
20
21const buildTemplate = (0, _core.template)(`
22 SYSTEM_REGISTER(MODULE_NAME, SOURCES, function (EXPORT_IDENTIFIER, CONTEXT_IDENTIFIER) {
23 "use strict";
24 BEFORE_BODY;
25 return {
26 setters: SETTERS,
27 execute: EXECUTE,
28 };
29 });
30`);
31const buildExportAll = (0, _core.template)(`
32 for (var KEY in TARGET) {
33 if (KEY !== "default" && KEY !== "__esModule") EXPORT_OBJ[KEY] = TARGET[KEY];
34 }
35`);
36const MISSING_PLUGIN_WARNING = `\
37WARNING: Dynamic import() transformation must be enabled using the
38 @babel/plugin-proposal-dynamic-import plugin. Babel 8 will
39 no longer transform import() without using that plugin.
40`;
41const MISSING_PLUGIN_ERROR = `\
42ERROR: Dynamic import() transformation must be enabled using the
43 @babel/plugin-proposal-dynamic-import plugin. Babel 8
44 no longer transforms import() without using that plugin.
45`;
46
47function getExportSpecifierName(node, stringSpecifiers) {
48 if (node.type === "Identifier") {
49 return node.name;
50 } else if (node.type === "StringLiteral") {
51 const stringValue = node.value;
52
53 if (!(0, _helperValidatorIdentifier.isIdentifierName)(stringValue)) {
54 stringSpecifiers.add(stringValue);
55 }
56
57 return stringValue;
58 } else {
59 throw new Error(`Expected export specifier to be either Identifier or StringLiteral, got ${node.type}`);
60 }
61}
62
63function constructExportCall(path, exportIdent, exportNames, exportValues, exportStarTarget, stringSpecifiers) {
64 const statements = [];
65
66 if (!exportStarTarget) {
67 if (exportNames.length === 1) {
68 statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.stringLiteral(exportNames[0]), exportValues[0]])));
69 } else {
70 const objectProperties = [];
71
72 for (let i = 0; i < exportNames.length; i++) {
73 const exportName = exportNames[i];
74 const exportValue = exportValues[i];
75 objectProperties.push(_core.types.objectProperty(stringSpecifiers.has(exportName) ? _core.types.stringLiteral(exportName) : _core.types.identifier(exportName), exportValue));
76 }
77
78 statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.objectExpression(objectProperties)])));
79 }
80 } else {
81 const exportObj = path.scope.generateUid("exportObj");
82 statements.push(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(exportObj), _core.types.objectExpression([]))]));
83 statements.push(buildExportAll({
84 KEY: path.scope.generateUidIdentifier("key"),
85 EXPORT_OBJ: _core.types.identifier(exportObj),
86 TARGET: exportStarTarget
87 }));
88
89 for (let i = 0; i < exportNames.length; i++) {
90 const exportName = exportNames[i];
91 const exportValue = exportValues[i];
92 statements.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.memberExpression(_core.types.identifier(exportObj), _core.types.identifier(exportName)), exportValue)));
93 }
94
95 statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.identifier(exportObj)])));
96 }
97
98 return statements;
99}
100
101var _default = (0, _helperPluginUtils.declare)((api, options) => {
102 api.assertVersion(7);
103 const {
104 systemGlobal = "System",
105 allowTopLevelThis = false
106 } = options;
107 const IGNORE_REASSIGNMENT_SYMBOL = Symbol();
108 const reassignmentVisitor = {
109 "AssignmentExpression|UpdateExpression"(path) {
110 if (path.node[IGNORE_REASSIGNMENT_SYMBOL]) return;
111 path.node[IGNORE_REASSIGNMENT_SYMBOL] = true;
112 const arg = path.get(path.isAssignmentExpression() ? "left" : "argument");
113
114 if (arg.isObjectPattern() || arg.isArrayPattern()) {
115 const exprs = [path.node];
116
117 for (const name of Object.keys(arg.getBindingIdentifiers())) {
118 if (this.scope.getBinding(name) !== path.scope.getBinding(name)) {
119 return;
120 }
121
122 const exportedNames = this.exports[name];
123 if (!exportedNames) return;
124
125 for (const exportedName of exportedNames) {
126 exprs.push(this.buildCall(exportedName, _core.types.identifier(name)).expression);
127 }
128 }
129
130 path.replaceWith(_core.types.sequenceExpression(exprs));
131 return;
132 }
133
134 if (!arg.isIdentifier()) return;
135 const name = arg.node.name;
136 if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
137 const exportedNames = this.exports[name];
138 if (!exportedNames) return;
139 let node = path.node;
140 const isPostUpdateExpression = path.isUpdateExpression({
141 prefix: false
142 });
143
144 if (isPostUpdateExpression) {
145 node = _core.types.binaryExpression(node.operator[0], _core.types.unaryExpression("+", _core.types.cloneNode(node.argument)), _core.types.numericLiteral(1));
146 }
147
148 for (const exportedName of exportedNames) {
149 node = this.buildCall(exportedName, node).expression;
150 }
151
152 if (isPostUpdateExpression) {
153 node = _core.types.sequenceExpression([node, path.node]);
154 }
155
156 path.replaceWith(node);
157 }
158
159 };
160 return {
161 name: "transform-modules-systemjs",
162
163 pre() {
164 this.file.set("@babel/plugin-transform-modules-*", "systemjs");
165 },
166
167 visitor: {
168 CallExpression(path, state) {
169 if (_core.types.isImport(path.node.callee)) {
170 if (!this.file.has("@babel/plugin-proposal-dynamic-import")) {
171 {
172 console.warn(MISSING_PLUGIN_WARNING);
173 }
174 }
175
176 path.replaceWith(_core.types.callExpression(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("import")), [(0, _utils.getImportSource)(_core.types, path.node)]));
177 }
178 },
179
180 MetaProperty(path, state) {
181 if (path.node.meta.name === "import" && path.node.property.name === "meta") {
182 path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("meta")));
183 }
184 },
185
186 ReferencedIdentifier(path, state) {
187 if (path.node.name === "__moduleName" && !path.scope.hasBinding("__moduleName")) {
188 path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("id")));
189 }
190 },
191
192 Program: {
193 enter(path, state) {
194 state.contextIdent = path.scope.generateUid("context");
195 state.stringSpecifiers = new Set();
196
197 if (!allowTopLevelThis) {
198 (0, _helperModuleTransforms.rewriteThis)(path);
199 }
200 },
201
202 exit(path, state) {
203 const scope = path.scope;
204 const exportIdent = scope.generateUid("export");
205 const {
206 contextIdent,
207 stringSpecifiers
208 } = state;
209 const exportMap = Object.create(null);
210 const modules = [];
211 const beforeBody = [];
212 const setters = [];
213 const sources = [];
214 const variableIds = [];
215 const removedPaths = [];
216
217 function addExportName(key, val) {
218 exportMap[key] = exportMap[key] || [];
219 exportMap[key].push(val);
220 }
221
222 function pushModule(source, key, specifiers) {
223 let module;
224 modules.forEach(function (m) {
225 if (m.key === source) {
226 module = m;
227 }
228 });
229
230 if (!module) {
231 modules.push(module = {
232 key: source,
233 imports: [],
234 exports: []
235 });
236 }
237
238 module[key] = module[key].concat(specifiers);
239 }
240
241 function buildExportCall(name, val) {
242 return _core.types.expressionStatement(_core.types.callExpression(_core.types.identifier(exportIdent), [_core.types.stringLiteral(name), val]));
243 }
244
245 const exportNames = [];
246 const exportValues = [];
247 const body = path.get("body");
248
249 for (const path of body) {
250 if (path.isFunctionDeclaration()) {
251 beforeBody.push(path.node);
252 removedPaths.push(path);
253 } else if (path.isClassDeclaration()) {
254 variableIds.push(_core.types.cloneNode(path.node.id));
255 path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(path.node.id), _core.types.toExpression(path.node))));
256 } else if (path.isImportDeclaration()) {
257 const source = path.node.source.value;
258 pushModule(source, "imports", path.node.specifiers);
259
260 for (const name of Object.keys(path.getBindingIdentifiers())) {
261 scope.removeBinding(name);
262 variableIds.push(_core.types.identifier(name));
263 }
264
265 path.remove();
266 } else if (path.isExportAllDeclaration()) {
267 pushModule(path.node.source.value, "exports", path.node);
268 path.remove();
269 } else if (path.isExportDefaultDeclaration()) {
270 const declar = path.get("declaration");
271 const id = declar.node.id;
272
273 if (declar.isClassDeclaration()) {
274 if (id) {
275 exportNames.push("default");
276 exportValues.push(scope.buildUndefinedNode());
277 variableIds.push(_core.types.cloneNode(id));
278 addExportName(id.name, "default");
279 path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(id), _core.types.toExpression(declar.node))));
280 } else {
281 exportNames.push("default");
282 exportValues.push(_core.types.toExpression(declar.node));
283 removedPaths.push(path);
284 }
285 } else if (declar.isFunctionDeclaration()) {
286 if (id) {
287 beforeBody.push(declar.node);
288 exportNames.push("default");
289 exportValues.push(_core.types.cloneNode(id));
290 addExportName(id.name, "default");
291 } else {
292 exportNames.push("default");
293 exportValues.push(_core.types.toExpression(declar.node));
294 }
295
296 removedPaths.push(path);
297 } else {
298 path.replaceWith(buildExportCall("default", declar.node));
299 }
300 } else if (path.isExportNamedDeclaration()) {
301 const declar = path.get("declaration");
302
303 if (declar.node) {
304 path.replaceWith(declar);
305
306 if (path.isFunction()) {
307 const node = declar.node;
308 const name = node.id.name;
309 addExportName(name, name);
310 beforeBody.push(node);
311 exportNames.push(name);
312 exportValues.push(_core.types.cloneNode(node.id));
313 removedPaths.push(path);
314 } else if (path.isClass()) {
315 const name = declar.node.id.name;
316 exportNames.push(name);
317 exportValues.push(scope.buildUndefinedNode());
318 variableIds.push(_core.types.cloneNode(declar.node.id));
319 path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(declar.node.id), _core.types.toExpression(declar.node))));
320 addExportName(name, name);
321 } else {
322 for (const name of Object.keys(declar.getBindingIdentifiers())) {
323 addExportName(name, name);
324 }
325 }
326 } else {
327 const specifiers = path.node.specifiers;
328
329 if (specifiers != null && specifiers.length) {
330 if (path.node.source) {
331 pushModule(path.node.source.value, "exports", specifiers);
332 path.remove();
333 } else {
334 const nodes = [];
335
336 for (const specifier of specifiers) {
337 const {
338 local,
339 exported
340 } = specifier;
341 const binding = scope.getBinding(local.name);
342 const exportedName = getExportSpecifierName(exported, stringSpecifiers);
343
344 if (binding && _core.types.isFunctionDeclaration(binding.path.node)) {
345 exportNames.push(exportedName);
346 exportValues.push(_core.types.cloneNode(local));
347 } else if (!binding) {
348 nodes.push(buildExportCall(exportedName, local));
349 }
350
351 addExportName(local.name, exportedName);
352 }
353
354 path.replaceWithMultiple(nodes);
355 }
356 } else {
357 path.remove();
358 }
359 }
360 }
361 }
362
363 modules.forEach(function (specifiers) {
364 const setterBody = [];
365 const target = scope.generateUid(specifiers.key);
366
367 for (let specifier of specifiers.imports) {
368 if (_core.types.isImportNamespaceSpecifier(specifier)) {
369 setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.identifier(target))));
370 } else if (_core.types.isImportDefaultSpecifier(specifier)) {
371 specifier = _core.types.importSpecifier(specifier.local, _core.types.identifier("default"));
372 }
373
374 if (_core.types.isImportSpecifier(specifier)) {
375 const {
376 imported
377 } = specifier;
378 setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.memberExpression(_core.types.identifier(target), specifier.imported, imported.type === "StringLiteral"))));
379 }
380 }
381
382 if (specifiers.exports.length) {
383 const exportNames = [];
384 const exportValues = [];
385 let hasExportStar = false;
386
387 for (const node of specifiers.exports) {
388 if (_core.types.isExportAllDeclaration(node)) {
389 hasExportStar = true;
390 } else if (_core.types.isExportSpecifier(node)) {
391 const exportedName = getExportSpecifierName(node.exported, stringSpecifiers);
392 exportNames.push(exportedName);
393 exportValues.push(_core.types.memberExpression(_core.types.identifier(target), node.local, _core.types.isStringLiteral(node.local)));
394 } else {}
395 }
396
397 setterBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, hasExportStar ? _core.types.identifier(target) : null, stringSpecifiers));
398 }
399
400 sources.push(_core.types.stringLiteral(specifiers.key));
401 setters.push(_core.types.functionExpression(null, [_core.types.identifier(target)], _core.types.blockStatement(setterBody)));
402 });
403 let moduleName = (0, _helperModuleTransforms.getModuleName)(this.file.opts, options);
404 if (moduleName) moduleName = _core.types.stringLiteral(moduleName);
405 (0, _helperHoistVariables.default)(path, (id, name, hasInit) => {
406 variableIds.push(id);
407
408 if (!hasInit && name in exportMap) {
409 for (const exported of exportMap[name]) {
410 exportNames.push(exported);
411 exportValues.push(scope.buildUndefinedNode());
412 }
413 }
414 }, null);
415
416 if (variableIds.length) {
417 beforeBody.unshift(_core.types.variableDeclaration("var", variableIds.map(id => _core.types.variableDeclarator(id))));
418 }
419
420 if (exportNames.length) {
421 beforeBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, null, stringSpecifiers));
422 }
423
424 path.traverse(reassignmentVisitor, {
425 exports: exportMap,
426 buildCall: buildExportCall,
427 scope
428 });
429
430 for (const path of removedPaths) {
431 path.remove();
432 }
433
434 let hasTLA = false;
435 path.traverse({
436 AwaitExpression(path) {
437 hasTLA = true;
438 path.stop();
439 },
440
441 Function(path) {
442 path.skip();
443 },
444
445 noScope: true
446 });
447 path.node.body = [buildTemplate({
448 SYSTEM_REGISTER: _core.types.memberExpression(_core.types.identifier(systemGlobal), _core.types.identifier("register")),
449 BEFORE_BODY: beforeBody,
450 MODULE_NAME: moduleName,
451 SETTERS: _core.types.arrayExpression(setters),
452 EXECUTE: _core.types.functionExpression(null, [], _core.types.blockStatement(path.node.body), false, hasTLA),
453 SOURCES: _core.types.arrayExpression(sources),
454 EXPORT_IDENTIFIER: _core.types.identifier(exportIdent),
455 CONTEXT_IDENTIFIER: _core.types.identifier(contextIdent)
456 })];
457 }
458
459 }
460 }
461 };
462});
463
464exports.default = _default;
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