source: trip-planner-front/node_modules/webpack/lib/dependencies/HarmonyImportDependency.js@ 8d391a1

Last change on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit
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1/*
2 MIT License http://www.opensource.org/licenses/mit-license.php
3 Author Tobias Koppers @sokra
4*/
5
6"use strict";
7
8const ConditionalInitFragment = require("../ConditionalInitFragment");
9const Dependency = require("../Dependency");
10const HarmonyLinkingError = require("../HarmonyLinkingError");
11const InitFragment = require("../InitFragment");
12const Template = require("../Template");
13const AwaitDependenciesInitFragment = require("../async-modules/AwaitDependenciesInitFragment");
14const { filterRuntime, mergeRuntime } = require("../util/runtime");
15const ModuleDependency = require("./ModuleDependency");
16
17/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
18/** @typedef {import("webpack-sources").Source} Source */
19/** @typedef {import("../ChunkGraph")} ChunkGraph */
20/** @typedef {import("../Dependency").ReferencedExport} ReferencedExport */
21/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
22/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
23/** @typedef {import("../Module")} Module */
24/** @typedef {import("../ModuleGraph")} ModuleGraph */
25/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
26/** @typedef {import("../WebpackError")} WebpackError */
27/** @typedef {import("../util/Hash")} Hash */
28/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
29
30class HarmonyImportDependency extends ModuleDependency {
31 /**
32 *
33 * @param {string} request request string
34 * @param {number} sourceOrder source order
35 * @param {Record<string, any>=} assertions import assertions
36 */
37 constructor(request, sourceOrder, assertions) {
38 super(request);
39 this.sourceOrder = sourceOrder;
40 this.assertions = assertions;
41 }
42
43 get category() {
44 return "esm";
45 }
46
47 /**
48 * Returns list of exports referenced by this dependency
49 * @param {ModuleGraph} moduleGraph module graph
50 * @param {RuntimeSpec} runtime the runtime for which the module is analysed
51 * @returns {(string[] | ReferencedExport)[]} referenced exports
52 */
53 getReferencedExports(moduleGraph, runtime) {
54 return Dependency.NO_EXPORTS_REFERENCED;
55 }
56
57 /**
58 * @param {ModuleGraph} moduleGraph the module graph
59 * @returns {string} name of the variable for the import
60 */
61 getImportVar(moduleGraph) {
62 const module = moduleGraph.getParentModule(this);
63 const meta = moduleGraph.getMeta(module);
64 let importVarMap = meta.importVarMap;
65 if (!importVarMap) meta.importVarMap = importVarMap = new Map();
66 let importVar = importVarMap.get(moduleGraph.getModule(this));
67 if (importVar) return importVar;
68 importVar = `${Template.toIdentifier(
69 `${this.userRequest}`
70 )}__WEBPACK_IMPORTED_MODULE_${importVarMap.size}__`;
71 importVarMap.set(moduleGraph.getModule(this), importVar);
72 return importVar;
73 }
74
75 /**
76 * @param {boolean} update create new variables or update existing one
77 * @param {DependencyTemplateContext} templateContext the template context
78 * @returns {[string, string]} the import statement and the compat statement
79 */
80 getImportStatement(
81 update,
82 { runtimeTemplate, module, moduleGraph, chunkGraph, runtimeRequirements }
83 ) {
84 return runtimeTemplate.importStatement({
85 update,
86 module: moduleGraph.getModule(this),
87 chunkGraph,
88 importVar: this.getImportVar(moduleGraph),
89 request: this.request,
90 originModule: module,
91 runtimeRequirements
92 });
93 }
94
95 /**
96 * @param {ModuleGraph} moduleGraph module graph
97 * @param {string[]} ids imported ids
98 * @param {string} additionalMessage extra info included in the error message
99 * @returns {WebpackError[] | undefined} errors
100 */
101 getLinkingErrors(moduleGraph, ids, additionalMessage) {
102 const importedModule = moduleGraph.getModule(this);
103 // ignore errors for missing or failed modules
104 if (!importedModule || importedModule.getNumberOfErrors() > 0) {
105 return;
106 }
107
108 const parentModule = moduleGraph.getParentModule(this);
109 const exportsType = importedModule.getExportsType(
110 moduleGraph,
111 parentModule.buildMeta.strictHarmonyModule
112 );
113 if (exportsType === "namespace" || exportsType === "default-with-named") {
114 if (ids.length === 0) {
115 return;
116 }
117
118 if (
119 (exportsType !== "default-with-named" || ids[0] !== "default") &&
120 moduleGraph.isExportProvided(importedModule, ids) === false
121 ) {
122 // We are sure that it's not provided
123
124 // Try to provide detailed info in the error message
125 let pos = 0;
126 let exportsInfo = moduleGraph.getExportsInfo(importedModule);
127 while (pos < ids.length && exportsInfo) {
128 const id = ids[pos++];
129 const exportInfo = exportsInfo.getReadOnlyExportInfo(id);
130 if (exportInfo.provided === false) {
131 // We are sure that it's not provided
132 const providedExports = exportsInfo.getProvidedExports();
133 const moreInfo = !Array.isArray(providedExports)
134 ? " (possible exports unknown)"
135 : providedExports.length === 0
136 ? " (module has no exports)"
137 : ` (possible exports: ${providedExports.join(", ")})`;
138 return [
139 new HarmonyLinkingError(
140 `export ${ids
141 .slice(0, pos)
142 .map(id => `'${id}'`)
143 .join(".")} ${additionalMessage} was not found in '${
144 this.userRequest
145 }'${moreInfo}`
146 )
147 ];
148 }
149 exportsInfo = exportInfo.getNestedExportsInfo();
150 }
151
152 // General error message
153 return [
154 new HarmonyLinkingError(
155 `export ${ids
156 .map(id => `'${id}'`)
157 .join(".")} ${additionalMessage} was not found in '${
158 this.userRequest
159 }'`
160 )
161 ];
162 }
163 }
164 switch (exportsType) {
165 case "default-only":
166 // It's has only a default export
167 if (ids.length > 0 && ids[0] !== "default") {
168 // In strict harmony modules we only support the default export
169 return [
170 new HarmonyLinkingError(
171 `Can't import the named export ${ids
172 .map(id => `'${id}'`)
173 .join(
174 "."
175 )} ${additionalMessage} from default-exporting module (only default export is available)`
176 )
177 ];
178 }
179 break;
180 case "default-with-named":
181 // It has a default export and named properties redirect
182 // In some cases we still want to warn here
183 if (
184 ids.length > 0 &&
185 ids[0] !== "default" &&
186 importedModule.buildMeta.defaultObject === "redirect-warn"
187 ) {
188 // For these modules only the default export is supported
189 return [
190 new HarmonyLinkingError(
191 `Should not import the named export ${ids
192 .map(id => `'${id}'`)
193 .join(
194 "."
195 )} ${additionalMessage} from default-exporting module (only default export is available soon)`
196 )
197 ];
198 }
199 break;
200 }
201 }
202
203 serialize(context) {
204 const { write } = context;
205 write(this.sourceOrder);
206 write(this.assertions);
207 super.serialize(context);
208 }
209
210 deserialize(context) {
211 const { read } = context;
212 this.sourceOrder = read();
213 this.assertions = read();
214 super.deserialize(context);
215 }
216}
217
218module.exports = HarmonyImportDependency;
219
220/** @type {WeakMap<Module, WeakMap<Module, RuntimeSpec | boolean>>} */
221const importEmittedMap = new WeakMap();
222
223HarmonyImportDependency.Template = class HarmonyImportDependencyTemplate extends (
224 ModuleDependency.Template
225) {
226 /**
227 * @param {Dependency} dependency the dependency for which the template should be applied
228 * @param {ReplaceSource} source the current replace source which can be modified
229 * @param {DependencyTemplateContext} templateContext the context object
230 * @returns {void}
231 */
232 apply(dependency, source, templateContext) {
233 const dep = /** @type {HarmonyImportDependency} */ (dependency);
234 const { module, chunkGraph, moduleGraph, runtime } = templateContext;
235
236 const connection = moduleGraph.getConnection(dep);
237 if (connection && !connection.isTargetActive(runtime)) return;
238
239 const referencedModule = connection && connection.module;
240
241 if (
242 connection &&
243 connection.weak &&
244 referencedModule &&
245 chunkGraph.getModuleId(referencedModule) === null
246 ) {
247 // in weak references, module might not be in any chunk
248 // but that's ok, we don't need that logic in this case
249 return;
250 }
251
252 const moduleKey = referencedModule
253 ? referencedModule.identifier()
254 : dep.request;
255 const key = `harmony import ${moduleKey}`;
256
257 const runtimeCondition = dep.weak
258 ? false
259 : connection
260 ? filterRuntime(runtime, r => connection.isTargetActive(r))
261 : true;
262
263 if (module && referencedModule) {
264 let emittedModules = importEmittedMap.get(module);
265 if (emittedModules === undefined) {
266 emittedModules = new WeakMap();
267 importEmittedMap.set(module, emittedModules);
268 }
269 let mergedRuntimeCondition = runtimeCondition;
270 const oldRuntimeCondition = emittedModules.get(referencedModule) || false;
271 if (oldRuntimeCondition !== false && mergedRuntimeCondition !== true) {
272 if (mergedRuntimeCondition === false || oldRuntimeCondition === true) {
273 mergedRuntimeCondition = oldRuntimeCondition;
274 } else {
275 mergedRuntimeCondition = mergeRuntime(
276 oldRuntimeCondition,
277 mergedRuntimeCondition
278 );
279 }
280 }
281 emittedModules.set(referencedModule, mergedRuntimeCondition);
282 }
283
284 const importStatement = dep.getImportStatement(false, templateContext);
285 if (templateContext.moduleGraph.isAsync(referencedModule)) {
286 templateContext.initFragments.push(
287 new ConditionalInitFragment(
288 importStatement[0],
289 InitFragment.STAGE_HARMONY_IMPORTS,
290 dep.sourceOrder,
291 key,
292 runtimeCondition
293 )
294 );
295 templateContext.initFragments.push(
296 new AwaitDependenciesInitFragment(
297 new Set([dep.getImportVar(templateContext.moduleGraph)])
298 )
299 );
300 templateContext.initFragments.push(
301 new ConditionalInitFragment(
302 importStatement[1],
303 InitFragment.STAGE_ASYNC_HARMONY_IMPORTS,
304 dep.sourceOrder,
305 key + " compat",
306 runtimeCondition
307 )
308 );
309 } else {
310 templateContext.initFragments.push(
311 new ConditionalInitFragment(
312 importStatement[0] + importStatement[1],
313 InitFragment.STAGE_HARMONY_IMPORTS,
314 dep.sourceOrder,
315 key,
316 runtimeCondition
317 )
318 );
319 }
320 }
321
322 /**
323 *
324 * @param {Module} module the module
325 * @param {Module} referencedModule the referenced module
326 * @returns {RuntimeSpec | boolean} runtimeCondition in which this import has been emitted
327 */
328 static getImportEmittedRuntime(module, referencedModule) {
329 const emittedModules = importEmittedMap.get(module);
330 if (emittedModules === undefined) return false;
331 return emittedModules.get(referencedModule) || false;
332 }
333};
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