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Diffstat (limited to 'node_modules/webpack/lib/optimize/ConcatenatedModule.js')
| -rw-r--r-- | node_modules/webpack/lib/optimize/ConcatenatedModule.js | 1905 |
1 files changed, 1905 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/optimize/ConcatenatedModule.js b/node_modules/webpack/lib/optimize/ConcatenatedModule.js new file mode 100644 index 00000000..f889b5e2 --- /dev/null +++ b/node_modules/webpack/lib/optimize/ConcatenatedModule.js @@ -0,0 +1,1905 @@ +/* + MIT License http://www.opensource.org/licenses/mit-license.php + Author Tobias Koppers @sokra +*/ + +"use strict"; + +const eslintScope = require("eslint-scope"); +const Referencer = require("eslint-scope/lib/referencer"); +const { + CachedSource, + ConcatSource, + ReplaceSource +} = require("webpack-sources"); +const ConcatenationScope = require("../ConcatenationScope"); +const { UsageState } = require("../ExportsInfo"); +const Module = require("../Module"); +const { JAVASCRIPT_MODULE_TYPE_ESM } = require("../ModuleTypeConstants"); +const RuntimeGlobals = require("../RuntimeGlobals"); +const Template = require("../Template"); +const HarmonyImportDependency = require("../dependencies/HarmonyImportDependency"); +const JavascriptParser = require("../javascript/JavascriptParser"); +const { equals } = require("../util/ArrayHelpers"); +const LazySet = require("../util/LazySet"); +const { concatComparators } = require("../util/comparators"); +const createHash = require("../util/createHash"); +const { makePathsRelative } = require("../util/identifier"); +const makeSerializable = require("../util/makeSerializable"); +const propertyAccess = require("../util/propertyAccess"); +const { propertyName } = require("../util/propertyName"); +const { + filterRuntime, + intersectRuntime, + mergeRuntimeCondition, + mergeRuntimeConditionNonFalse, + runtimeConditionToString, + subtractRuntimeCondition +} = require("../util/runtime"); + +/** @typedef {import("eslint-scope").Scope} Scope */ +/** @typedef {import("webpack-sources").Source} Source */ +/** @typedef {import("../../declarations/WebpackOptions").WebpackOptionsNormalized} WebpackOptions */ +/** @typedef {import("../ChunkGraph")} ChunkGraph */ +/** @typedef {import("../CodeGenerationResults")} CodeGenerationResults */ +/** @typedef {import("../Compilation")} Compilation */ +/** @typedef {import("../Dependency")} Dependency */ +/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */ +/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */ +/** @typedef {import("../DependencyTemplates")} DependencyTemplates */ +/** @typedef {import("../ExportsInfo").ExportInfo} ExportInfo */ +/** @template T @typedef {import("../InitFragment")<T>} InitFragment */ +/** @typedef {import("../Module").CodeGenerationContext} CodeGenerationContext */ +/** @typedef {import("../Module").CodeGenerationResult} CodeGenerationResult */ +/** @typedef {import("../Module").LibIdentOptions} LibIdentOptions */ +/** @typedef {import("../ModuleGraph")} ModuleGraph */ +/** @typedef {import("../ModuleGraphConnection")} ModuleGraphConnection */ +/** @typedef {import("../ModuleGraphConnection").ConnectionState} ConnectionState */ +/** @typedef {import("../RequestShortener")} RequestShortener */ +/** @typedef {import("../ResolverFactory").ResolverWithOptions} ResolverWithOptions */ +/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */ +/** @typedef {import("../WebpackError")} WebpackError */ +/** @typedef {import("../javascript/JavascriptModulesPlugin").ChunkRenderContext} ChunkRenderContext */ +/** @typedef {import("../util/Hash")} Hash */ +/** @typedef {typeof import("../util/Hash")} HashConstructor */ +/** @typedef {import("../util/fs").InputFileSystem} InputFileSystem */ +/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */ + +// fix eslint-scope to support class properties correctly +// cspell:word Referencer +const ReferencerClass = Referencer; +if (!ReferencerClass.prototype.PropertyDefinition) { + ReferencerClass.prototype.PropertyDefinition = + ReferencerClass.prototype.Property; +} + +/** + * @typedef {Object} ReexportInfo + * @property {Module} module + * @property {string[]} export + */ + +/** @typedef {RawBinding | SymbolBinding} Binding */ + +/** + * @typedef {Object} RawBinding + * @property {ModuleInfo} info + * @property {string} rawName + * @property {string=} comment + * @property {string[]} ids + * @property {string[]} exportName + */ + +/** + * @typedef {Object} SymbolBinding + * @property {ConcatenatedModuleInfo} info + * @property {string} name + * @property {string=} comment + * @property {string[]} ids + * @property {string[]} exportName + */ + +/** @typedef {ConcatenatedModuleInfo | ExternalModuleInfo } ModuleInfo */ +/** @typedef {ConcatenatedModuleInfo | ExternalModuleInfo | ReferenceToModuleInfo } ModuleInfoOrReference */ + +/** + * @typedef {Object} ConcatenatedModuleInfo + * @property {"concatenated"} type + * @property {Module} module + * @property {number} index + * @property {Object} ast + * @property {Source} internalSource + * @property {ReplaceSource} source + * @property {InitFragment<ChunkRenderContext>[]=} chunkInitFragments + * @property {Iterable<string>} runtimeRequirements + * @property {Scope} globalScope + * @property {Scope} moduleScope + * @property {Map<string, string>} internalNames + * @property {Map<string, string>} exportMap + * @property {Map<string, string>} rawExportMap + * @property {string=} namespaceExportSymbol + * @property {string} namespaceObjectName + * @property {boolean} interopNamespaceObjectUsed + * @property {string} interopNamespaceObjectName + * @property {boolean} interopNamespaceObject2Used + * @property {string} interopNamespaceObject2Name + * @property {boolean} interopDefaultAccessUsed + * @property {string} interopDefaultAccessName + */ + +/** + * @typedef {Object} ExternalModuleInfo + * @property {"external"} type + * @property {Module} module + * @property {RuntimeSpec | boolean} runtimeCondition + * @property {number} index + * @property {string} name + * @property {boolean} interopNamespaceObjectUsed + * @property {string} interopNamespaceObjectName + * @property {boolean} interopNamespaceObject2Used + * @property {string} interopNamespaceObject2Name + * @property {boolean} interopDefaultAccessUsed + * @property {string} interopDefaultAccessName + */ + +/** + * @typedef {Object} ReferenceToModuleInfo + * @property {"reference"} type + * @property {RuntimeSpec | boolean} runtimeCondition + * @property {ConcatenatedModuleInfo | ExternalModuleInfo} target + */ + +const RESERVED_NAMES = new Set( + [ + // internal names (should always be renamed) + ConcatenationScope.DEFAULT_EXPORT, + ConcatenationScope.NAMESPACE_OBJECT_EXPORT, + + // keywords + "abstract,arguments,async,await,boolean,break,byte,case,catch,char,class,const,continue", + "debugger,default,delete,do,double,else,enum,eval,export,extends,false,final,finally,float", + "for,function,goto,if,implements,import,in,instanceof,int,interface,let,long,native,new,null", + "package,private,protected,public,return,short,static,super,switch,synchronized,this,throw", + "throws,transient,true,try,typeof,var,void,volatile,while,with,yield", + + // commonjs/amd + "module,__dirname,__filename,exports,require,define", + + // js globals + "Array,Date,eval,function,hasOwnProperty,Infinity,isFinite,isNaN,isPrototypeOf,length,Math", + "NaN,name,Number,Object,prototype,String,toString,undefined,valueOf", + + // browser globals + "alert,all,anchor,anchors,area,assign,blur,button,checkbox,clearInterval,clearTimeout", + "clientInformation,close,closed,confirm,constructor,crypto,decodeURI,decodeURIComponent", + "defaultStatus,document,element,elements,embed,embeds,encodeURI,encodeURIComponent,escape", + "event,fileUpload,focus,form,forms,frame,innerHeight,innerWidth,layer,layers,link,location", + "mimeTypes,navigate,navigator,frames,frameRate,hidden,history,image,images,offscreenBuffering", + "open,opener,option,outerHeight,outerWidth,packages,pageXOffset,pageYOffset,parent,parseFloat", + "parseInt,password,pkcs11,plugin,prompt,propertyIsEnum,radio,reset,screenX,screenY,scroll", + "secure,select,self,setInterval,setTimeout,status,submit,taint,text,textarea,top,unescape", + "untaint,window", + + // window events + "onblur,onclick,onerror,onfocus,onkeydown,onkeypress,onkeyup,onmouseover,onload,onmouseup,onmousedown,onsubmit" + ] + .join(",") + .split(",") +); + +const createComparator = (property, comparator) => (a, b) => + comparator(a[property], b[property]); +const compareNumbers = (a, b) => { + if (isNaN(a)) { + if (!isNaN(b)) { + return 1; + } + } else { + if (isNaN(b)) { + return -1; + } + if (a !== b) { + return a < b ? -1 : 1; + } + } + return 0; +}; +const bySourceOrder = createComparator("sourceOrder", compareNumbers); +const byRangeStart = createComparator("rangeStart", compareNumbers); + +const joinIterableWithComma = iterable => { + // This is more performant than Array.from().join(", ") + // as it doesn't create an array + let str = ""; + let first = true; + for (const item of iterable) { + if (first) { + first = false; + } else { + str += ", "; + } + str += item; + } + return str; +}; + +/** + * @typedef {Object} ConcatenationEntry + * @property {"concatenated" | "external"} type + * @property {Module} module + * @property {RuntimeSpec | boolean} runtimeCondition + */ + +/** + * @param {ModuleGraph} moduleGraph the module graph + * @param {ModuleInfo} info module info + * @param {string[]} exportName exportName + * @param {Map<Module, ModuleInfo>} moduleToInfoMap moduleToInfoMap + * @param {RuntimeSpec} runtime for which runtime + * @param {RequestShortener} requestShortener the request shortener + * @param {RuntimeTemplate} runtimeTemplate the runtime template + * @param {Set<ConcatenatedModuleInfo>} neededNamespaceObjects modules for which a namespace object should be generated + * @param {boolean} asCall asCall + * @param {boolean} strictHarmonyModule strictHarmonyModule + * @param {boolean | undefined} asiSafe asiSafe + * @param {Set<ExportInfo>} alreadyVisited alreadyVisited + * @returns {Binding} the final variable + */ +const getFinalBinding = ( + moduleGraph, + info, + exportName, + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + asCall, + strictHarmonyModule, + asiSafe, + alreadyVisited = new Set() +) => { + const exportsType = info.module.getExportsType( + moduleGraph, + strictHarmonyModule + ); + if (exportName.length === 0) { + switch (exportsType) { + case "default-only": + info.interopNamespaceObject2Used = true; + return { + info, + rawName: info.interopNamespaceObject2Name, + ids: exportName, + exportName + }; + case "default-with-named": + info.interopNamespaceObjectUsed = true; + return { + info, + rawName: info.interopNamespaceObjectName, + ids: exportName, + exportName + }; + case "namespace": + case "dynamic": + break; + default: + throw new Error(`Unexpected exportsType ${exportsType}`); + } + } else { + switch (exportsType) { + case "namespace": + break; + case "default-with-named": + switch (exportName[0]) { + case "default": + exportName = exportName.slice(1); + break; + case "__esModule": + return { + info, + rawName: "/* __esModule */true", + ids: exportName.slice(1), + exportName + }; + } + break; + case "default-only": { + const exportId = exportName[0]; + if (exportId === "__esModule") { + return { + info, + rawName: "/* __esModule */true", + ids: exportName.slice(1), + exportName + }; + } + exportName = exportName.slice(1); + if (exportId !== "default") { + return { + info, + rawName: + "/* non-default import from default-exporting module */undefined", + ids: exportName, + exportName + }; + } + break; + } + case "dynamic": + switch (exportName[0]) { + case "default": { + exportName = exportName.slice(1); + info.interopDefaultAccessUsed = true; + const defaultExport = asCall + ? `${info.interopDefaultAccessName}()` + : asiSafe + ? `(${info.interopDefaultAccessName}())` + : asiSafe === false + ? `;(${info.interopDefaultAccessName}())` + : `${info.interopDefaultAccessName}.a`; + return { + info, + rawName: defaultExport, + ids: exportName, + exportName + }; + } + case "__esModule": + return { + info, + rawName: "/* __esModule */true", + ids: exportName.slice(1), + exportName + }; + } + break; + default: + throw new Error(`Unexpected exportsType ${exportsType}`); + } + } + if (exportName.length === 0) { + switch (info.type) { + case "concatenated": + neededNamespaceObjects.add(info); + return { + info, + rawName: info.namespaceObjectName, + ids: exportName, + exportName + }; + case "external": + return { info, rawName: info.name, ids: exportName, exportName }; + } + } + const exportsInfo = moduleGraph.getExportsInfo(info.module); + const exportInfo = exportsInfo.getExportInfo(exportName[0]); + if (alreadyVisited.has(exportInfo)) { + return { + info, + rawName: "/* circular reexport */ Object(function x() { x() }())", + ids: [], + exportName + }; + } + alreadyVisited.add(exportInfo); + switch (info.type) { + case "concatenated": { + const exportId = exportName[0]; + if (exportInfo.provided === false) { + // It's not provided, but it could be on the prototype + neededNamespaceObjects.add(info); + return { + info, + rawName: info.namespaceObjectName, + ids: exportName, + exportName + }; + } + const directExport = info.exportMap && info.exportMap.get(exportId); + if (directExport) { + const usedName = /** @type {string[]} */ ( + exportsInfo.getUsedName(exportName, runtime) + ); + if (!usedName) { + return { + info, + rawName: "/* unused export */ undefined", + ids: exportName.slice(1), + exportName + }; + } + return { + info, + name: directExport, + ids: usedName.slice(1), + exportName + }; + } + const rawExport = info.rawExportMap && info.rawExportMap.get(exportId); + if (rawExport) { + return { + info, + rawName: rawExport, + ids: exportName.slice(1), + exportName + }; + } + const reexport = exportInfo.findTarget(moduleGraph, module => + moduleToInfoMap.has(module) + ); + if (reexport === false) { + throw new Error( + `Target module of reexport from '${info.module.readableIdentifier( + requestShortener + )}' is not part of the concatenation (export '${exportId}')\nModules in the concatenation:\n${Array.from( + moduleToInfoMap, + ([m, info]) => + ` * ${info.type} ${m.readableIdentifier(requestShortener)}` + ).join("\n")}` + ); + } + if (reexport) { + const refInfo = moduleToInfoMap.get(reexport.module); + return getFinalBinding( + moduleGraph, + refInfo, + reexport.export + ? [...reexport.export, ...exportName.slice(1)] + : exportName.slice(1), + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + asCall, + info.module.buildMeta.strictHarmonyModule, + asiSafe, + alreadyVisited + ); + } + if (info.namespaceExportSymbol) { + const usedName = /** @type {string[]} */ ( + exportsInfo.getUsedName(exportName, runtime) + ); + return { + info, + rawName: info.namespaceObjectName, + ids: usedName, + exportName + }; + } + throw new Error( + `Cannot get final name for export '${exportName.join( + "." + )}' of ${info.module.readableIdentifier(requestShortener)}` + ); + } + + case "external": { + const used = /** @type {string[]} */ ( + exportsInfo.getUsedName(exportName, runtime) + ); + if (!used) { + return { + info, + rawName: "/* unused export */ undefined", + ids: exportName.slice(1), + exportName + }; + } + const comment = equals(used, exportName) + ? "" + : Template.toNormalComment(`${exportName.join(".")}`); + return { info, rawName: info.name + comment, ids: used, exportName }; + } + } +}; + +/** + * @param {ModuleGraph} moduleGraph the module graph + * @param {ModuleInfo} info module info + * @param {string[]} exportName exportName + * @param {Map<Module, ModuleInfo>} moduleToInfoMap moduleToInfoMap + * @param {RuntimeSpec} runtime for which runtime + * @param {RequestShortener} requestShortener the request shortener + * @param {RuntimeTemplate} runtimeTemplate the runtime template + * @param {Set<ConcatenatedModuleInfo>} neededNamespaceObjects modules for which a namespace object should be generated + * @param {boolean} asCall asCall + * @param {boolean} callContext callContext + * @param {boolean} strictHarmonyModule strictHarmonyModule + * @param {boolean | undefined} asiSafe asiSafe + * @returns {string} the final name + */ +const getFinalName = ( + moduleGraph, + info, + exportName, + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + asCall, + callContext, + strictHarmonyModule, + asiSafe +) => { + const binding = getFinalBinding( + moduleGraph, + info, + exportName, + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + asCall, + strictHarmonyModule, + asiSafe + ); + { + const { ids, comment } = binding; + let reference; + let isPropertyAccess; + if ("rawName" in binding) { + reference = `${binding.rawName}${comment || ""}${propertyAccess(ids)}`; + isPropertyAccess = ids.length > 0; + } else { + const { info, name: exportId } = binding; + const name = info.internalNames.get(exportId); + if (!name) { + throw new Error( + `The export "${exportId}" in "${info.module.readableIdentifier( + requestShortener + )}" has no internal name (existing names: ${ + Array.from( + info.internalNames, + ([name, symbol]) => `${name}: ${symbol}` + ).join(", ") || "none" + })` + ); + } + reference = `${name}${comment || ""}${propertyAccess(ids)}`; + isPropertyAccess = ids.length > 1; + } + if (isPropertyAccess && asCall && callContext === false) { + return asiSafe + ? `(0,${reference})` + : asiSafe === false + ? `;(0,${reference})` + : `/*#__PURE__*/Object(${reference})`; + } + return reference; + } +}; + +const addScopeSymbols = (s, nameSet, scopeSet1, scopeSet2) => { + let scope = s; + while (scope) { + if (scopeSet1.has(scope)) break; + if (scopeSet2.has(scope)) break; + scopeSet1.add(scope); + for (const variable of scope.variables) { + nameSet.add(variable.name); + } + scope = scope.upper; + } +}; + +const getAllReferences = variable => { + let set = variable.references; + // Look for inner scope variables too (like in class Foo { t() { Foo } }) + const identifiers = new Set(variable.identifiers); + for (const scope of variable.scope.childScopes) { + for (const innerVar of scope.variables) { + if (innerVar.identifiers.some(id => identifiers.has(id))) { + set = set.concat(innerVar.references); + break; + } + } + } + return set; +}; + +const getPathInAst = (ast, node) => { + if (ast === node) { + return []; + } + + const nr = node.range; + + const enterNode = n => { + if (!n) return undefined; + const r = n.range; + if (r) { + if (r[0] <= nr[0] && r[1] >= nr[1]) { + const path = getPathInAst(n, node); + if (path) { + path.push(n); + return path; + } + } + } + return undefined; + }; + + if (Array.isArray(ast)) { + for (let i = 0; i < ast.length; i++) { + const enterResult = enterNode(ast[i]); + if (enterResult !== undefined) return enterResult; + } + } else if (ast && typeof ast === "object") { + const keys = Object.keys(ast); + for (let i = 0; i < keys.length; i++) { + const value = ast[keys[i]]; + if (Array.isArray(value)) { + const pathResult = getPathInAst(value, node); + if (pathResult !== undefined) return pathResult; + } else if (value && typeof value === "object") { + const enterResult = enterNode(value); + if (enterResult !== undefined) return enterResult; + } + } + } +}; + +const TYPES = new Set(["javascript"]); + +class ConcatenatedModule extends Module { + /** + * @param {Module} rootModule the root module of the concatenation + * @param {Set<Module>} modules all modules in the concatenation (including the root module) + * @param {RuntimeSpec} runtime the runtime + * @param {Object=} associatedObjectForCache object for caching + * @param {string | HashConstructor=} hashFunction hash function to use + * @returns {ConcatenatedModule} the module + */ + static create( + rootModule, + modules, + runtime, + associatedObjectForCache, + hashFunction = "md4" + ) { + const identifier = ConcatenatedModule._createIdentifier( + rootModule, + modules, + associatedObjectForCache, + hashFunction + ); + return new ConcatenatedModule({ + identifier, + rootModule, + modules, + runtime + }); + } + + /** + * @param {Object} options options + * @param {string} options.identifier the identifier of the module + * @param {Module=} options.rootModule the root module of the concatenation + * @param {RuntimeSpec} options.runtime the selected runtime + * @param {Set<Module>=} options.modules all concatenated modules + */ + constructor({ identifier, rootModule, modules, runtime }) { + super(JAVASCRIPT_MODULE_TYPE_ESM, null, rootModule && rootModule.layer); + + // Info from Factory + /** @type {string} */ + this._identifier = identifier; + /** @type {Module} */ + this.rootModule = rootModule; + /** @type {Set<Module>} */ + this._modules = modules; + this._runtime = runtime; + this.factoryMeta = rootModule && rootModule.factoryMeta; + } + + /** + * Assuming this module is in the cache. Update the (cached) module with + * the fresh module from the factory. Usually updates internal references + * and properties. + * @param {Module} module fresh module + * @returns {void} + */ + updateCacheModule(module) { + throw new Error("Must not be called"); + } + + /** + * @returns {Set<string>} types available (do not mutate) + */ + getSourceTypes() { + return TYPES; + } + + get modules() { + return Array.from(this._modules); + } + + /** + * @returns {string} a unique identifier of the module + */ + identifier() { + return this._identifier; + } + + /** + * @param {RequestShortener} requestShortener the request shortener + * @returns {string} a user readable identifier of the module + */ + readableIdentifier(requestShortener) { + return ( + this.rootModule.readableIdentifier(requestShortener) + + ` + ${this._modules.size - 1} modules` + ); + } + + /** + * @param {LibIdentOptions} options options + * @returns {string | null} an identifier for library inclusion + */ + libIdent(options) { + return this.rootModule.libIdent(options); + } + + /** + * @returns {string | null} absolute path which should be used for condition matching (usually the resource path) + */ + nameForCondition() { + return this.rootModule.nameForCondition(); + } + + /** + * @param {ModuleGraph} moduleGraph the module graph + * @returns {ConnectionState} how this module should be connected to referencing modules when consumed for side-effects only + */ + getSideEffectsConnectionState(moduleGraph) { + return this.rootModule.getSideEffectsConnectionState(moduleGraph); + } + + /** + * @param {WebpackOptions} options webpack options + * @param {Compilation} compilation the compilation + * @param {ResolverWithOptions} resolver the resolver + * @param {InputFileSystem} fs the file system + * @param {function(WebpackError=): void} callback callback function + * @returns {void} + */ + build(options, compilation, resolver, fs, callback) { + const { rootModule } = this; + this.buildInfo = { + strict: true, + cacheable: true, + moduleArgument: rootModule.buildInfo.moduleArgument, + exportsArgument: rootModule.buildInfo.exportsArgument, + fileDependencies: new LazySet(), + contextDependencies: new LazySet(), + missingDependencies: new LazySet(), + topLevelDeclarations: new Set(), + assets: undefined + }; + this.buildMeta = rootModule.buildMeta; + this.clearDependenciesAndBlocks(); + this.clearWarningsAndErrors(); + + for (const m of this._modules) { + // populate cacheable + if (!m.buildInfo.cacheable) { + this.buildInfo.cacheable = false; + } + + // populate dependencies + for (const d of m.dependencies.filter( + dep => + !(dep instanceof HarmonyImportDependency) || + !this._modules.has(compilation.moduleGraph.getModule(dep)) + )) { + this.dependencies.push(d); + } + // populate blocks + for (const d of m.blocks) { + this.blocks.push(d); + } + + // populate warnings + const warnings = m.getWarnings(); + if (warnings !== undefined) { + for (const warning of warnings) { + this.addWarning(warning); + } + } + + // populate errors + const errors = m.getErrors(); + if (errors !== undefined) { + for (const error of errors) { + this.addError(error); + } + } + + // populate topLevelDeclarations + if (m.buildInfo.topLevelDeclarations) { + const topLevelDeclarations = this.buildInfo.topLevelDeclarations; + if (topLevelDeclarations !== undefined) { + for (const decl of m.buildInfo.topLevelDeclarations) { + topLevelDeclarations.add(decl); + } + } + } else { + this.buildInfo.topLevelDeclarations = undefined; + } + + // populate assets + if (m.buildInfo.assets) { + if (this.buildInfo.assets === undefined) { + this.buildInfo.assets = Object.create(null); + } + Object.assign(this.buildInfo.assets, m.buildInfo.assets); + } + if (m.buildInfo.assetsInfo) { + if (this.buildInfo.assetsInfo === undefined) { + this.buildInfo.assetsInfo = new Map(); + } + for (const [key, value] of m.buildInfo.assetsInfo) { + this.buildInfo.assetsInfo.set(key, value); + } + } + } + callback(); + } + + /** + * @param {string=} type the source type for which the size should be estimated + * @returns {number} the estimated size of the module (must be non-zero) + */ + size(type) { + // Guess size from embedded modules + let size = 0; + for (const module of this._modules) { + size += module.size(type); + } + return size; + } + + /** + * @private + * @param {Module} rootModule the root of the concatenation + * @param {Set<Module>} modulesSet a set of modules which should be concatenated + * @param {RuntimeSpec} runtime for this runtime + * @param {ModuleGraph} moduleGraph the module graph + * @returns {ConcatenationEntry[]} concatenation list + */ + _createConcatenationList(rootModule, modulesSet, runtime, moduleGraph) { + /** @type {ConcatenationEntry[]} */ + const list = []; + /** @type {Map<Module, RuntimeSpec | true>} */ + const existingEntries = new Map(); + + /** + * @param {Module} module a module + * @returns {Iterable<{ connection: ModuleGraphConnection, runtimeCondition: RuntimeSpec | true }>} imported modules in order + */ + const getConcatenatedImports = module => { + let connections = Array.from(moduleGraph.getOutgoingConnections(module)); + if (module === rootModule) { + for (const c of moduleGraph.getOutgoingConnections(this)) + connections.push(c); + } + /** + * @type {Array<{ connection: ModuleGraphConnection, sourceOrder: number, rangeStart: number }>} + */ + const references = connections + .filter(connection => { + if (!(connection.dependency instanceof HarmonyImportDependency)) + return false; + return ( + connection && + connection.resolvedOriginModule === module && + connection.module && + connection.isTargetActive(runtime) + ); + }) + .map(connection => { + const dep = /** @type {HarmonyImportDependency} */ ( + connection.dependency + ); + return { + connection, + sourceOrder: dep.sourceOrder, + rangeStart: dep.range && dep.range[0] + }; + }); + /** + * bySourceOrder + * @example + * import a from "a"; // sourceOrder=1 + * import b from "b"; // sourceOrder=2 + * + * byRangeStart + * @example + * import {a, b} from "a"; // sourceOrder=1 + * a.a(); // first range + * b.b(); // second range + * + * If there is no reexport, we have the same source. + * If there is reexport, but module has side effects, this will lead to reexport module only. + * If there is side-effects-free reexport, we can get simple deterministic result with range start comparison. + */ + references.sort(concatComparators(bySourceOrder, byRangeStart)); + /** @type {Map<Module, { connection: ModuleGraphConnection, runtimeCondition: RuntimeSpec | true }>} */ + const referencesMap = new Map(); + for (const { connection } of references) { + const runtimeCondition = filterRuntime(runtime, r => + connection.isTargetActive(r) + ); + if (runtimeCondition === false) continue; + const module = connection.module; + const entry = referencesMap.get(module); + if (entry === undefined) { + referencesMap.set(module, { connection, runtimeCondition }); + continue; + } + entry.runtimeCondition = mergeRuntimeConditionNonFalse( + entry.runtimeCondition, + runtimeCondition, + runtime + ); + } + return referencesMap.values(); + }; + + /** + * @param {ModuleGraphConnection} connection graph connection + * @param {RuntimeSpec | true} runtimeCondition runtime condition + * @returns {void} + */ + const enterModule = (connection, runtimeCondition) => { + const module = connection.module; + if (!module) return; + const existingEntry = existingEntries.get(module); + if (existingEntry === true) { + return; + } + if (modulesSet.has(module)) { + existingEntries.set(module, true); + if (runtimeCondition !== true) { + throw new Error( + `Cannot runtime-conditional concatenate a module (${module.identifier()} in ${this.rootModule.identifier()}, ${runtimeConditionToString( + runtimeCondition + )}). This should not happen.` + ); + } + const imports = getConcatenatedImports(module); + for (const { connection, runtimeCondition } of imports) + enterModule(connection, runtimeCondition); + list.push({ + type: "concatenated", + module: connection.module, + runtimeCondition + }); + } else { + if (existingEntry !== undefined) { + const reducedRuntimeCondition = subtractRuntimeCondition( + runtimeCondition, + existingEntry, + runtime + ); + if (reducedRuntimeCondition === false) return; + runtimeCondition = reducedRuntimeCondition; + existingEntries.set( + connection.module, + mergeRuntimeConditionNonFalse( + existingEntry, + runtimeCondition, + runtime + ) + ); + } else { + existingEntries.set(connection.module, runtimeCondition); + } + if (list.length > 0) { + const lastItem = list[list.length - 1]; + if ( + lastItem.type === "external" && + lastItem.module === connection.module + ) { + lastItem.runtimeCondition = mergeRuntimeCondition( + lastItem.runtimeCondition, + runtimeCondition, + runtime + ); + return; + } + } + list.push({ + type: "external", + get module() { + // We need to use a getter here, because the module in the dependency + // could be replaced by some other process (i. e. also replaced with a + // concatenated module) + return connection.module; + }, + runtimeCondition + }); + } + }; + + existingEntries.set(rootModule, true); + const imports = getConcatenatedImports(rootModule); + for (const { connection, runtimeCondition } of imports) + enterModule(connection, runtimeCondition); + list.push({ + type: "concatenated", + module: rootModule, + runtimeCondition: true + }); + + return list; + } + + /** + * @param {Module} rootModule the root module of the concatenation + * @param {Set<Module>} modules all modules in the concatenation (including the root module) + * @param {Object=} associatedObjectForCache object for caching + * @param {string | HashConstructor=} hashFunction hash function to use + * @returns {string} the identifier + */ + static _createIdentifier( + rootModule, + modules, + associatedObjectForCache, + hashFunction = "md4" + ) { + const cachedMakePathsRelative = makePathsRelative.bindContextCache( + rootModule.context, + associatedObjectForCache + ); + let identifiers = []; + for (const module of modules) { + identifiers.push(cachedMakePathsRelative(module.identifier())); + } + identifiers.sort(); + const hash = createHash(hashFunction); + hash.update(identifiers.join(" ")); + return rootModule.identifier() + "|" + hash.digest("hex"); + } + + /** + * @param {LazySet<string>} fileDependencies set where file dependencies are added to + * @param {LazySet<string>} contextDependencies set where context dependencies are added to + * @param {LazySet<string>} missingDependencies set where missing dependencies are added to + * @param {LazySet<string>} buildDependencies set where build dependencies are added to + */ + addCacheDependencies( + fileDependencies, + contextDependencies, + missingDependencies, + buildDependencies + ) { + for (const module of this._modules) { + module.addCacheDependencies( + fileDependencies, + contextDependencies, + missingDependencies, + buildDependencies + ); + } + } + + /** + * @param {CodeGenerationContext} context context for code generation + * @returns {CodeGenerationResult} result + */ + codeGeneration({ + dependencyTemplates, + runtimeTemplate, + moduleGraph, + chunkGraph, + runtime: generationRuntime, + codeGenerationResults + }) { + /** @type {Set<string>} */ + const runtimeRequirements = new Set(); + const runtime = intersectRuntime(generationRuntime, this._runtime); + + const requestShortener = runtimeTemplate.requestShortener; + // Meta info for each module + const [modulesWithInfo, moduleToInfoMap] = this._getModulesWithInfo( + moduleGraph, + runtime + ); + + // Set with modules that need a generated namespace object + /** @type {Set<ConcatenatedModuleInfo>} */ + const neededNamespaceObjects = new Set(); + + // Generate source code and analyse scopes + // Prepare a ReplaceSource for the final source + for (const info of moduleToInfoMap.values()) { + this._analyseModule( + moduleToInfoMap, + info, + dependencyTemplates, + runtimeTemplate, + moduleGraph, + chunkGraph, + runtime, + codeGenerationResults + ); + } + + // List of all used names to avoid conflicts + const allUsedNames = new Set(RESERVED_NAMES); + // Updated Top level declarations are created by renaming + const topLevelDeclarations = new Set(); + + // List of additional names in scope for module references + /** @type {Map<string, { usedNames: Set<string>, alreadyCheckedScopes: Set<TODO> }>} */ + const usedNamesInScopeInfo = new Map(); + /** + * @param {string} module module identifier + * @param {string} id export id + * @returns {{ usedNames: Set<string>, alreadyCheckedScopes: Set<TODO> }} info + */ + const getUsedNamesInScopeInfo = (module, id) => { + const key = `${module}-${id}`; + let info = usedNamesInScopeInfo.get(key); + if (info === undefined) { + info = { + usedNames: new Set(), + alreadyCheckedScopes: new Set() + }; + usedNamesInScopeInfo.set(key, info); + } + return info; + }; + + // Set of already checked scopes + const ignoredScopes = new Set(); + + // get all global names + for (const info of modulesWithInfo) { + if (info.type === "concatenated") { + // ignore symbols from moduleScope + if (info.moduleScope) { + ignoredScopes.add(info.moduleScope); + } + + // The super class expression in class scopes behaves weird + // We get ranges of all super class expressions to make + // renaming to work correctly + const superClassCache = new WeakMap(); + const getSuperClassExpressions = scope => { + const cacheEntry = superClassCache.get(scope); + if (cacheEntry !== undefined) return cacheEntry; + const superClassExpressions = []; + for (const childScope of scope.childScopes) { + if (childScope.type !== "class") continue; + const block = childScope.block; + if ( + (block.type === "ClassDeclaration" || + block.type === "ClassExpression") && + block.superClass + ) { + superClassExpressions.push({ + range: block.superClass.range, + variables: childScope.variables + }); + } + } + superClassCache.set(scope, superClassExpressions); + return superClassExpressions; + }; + + // add global symbols + if (info.globalScope) { + for (const reference of info.globalScope.through) { + const name = reference.identifier.name; + if (ConcatenationScope.isModuleReference(name)) { + const match = ConcatenationScope.matchModuleReference(name); + if (!match) continue; + const referencedInfo = modulesWithInfo[match.index]; + if (referencedInfo.type === "reference") + throw new Error("Module reference can't point to a reference"); + const binding = getFinalBinding( + moduleGraph, + referencedInfo, + match.ids, + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + false, + info.module.buildMeta.strictHarmonyModule, + true + ); + if (!binding.ids) continue; + const { usedNames, alreadyCheckedScopes } = + getUsedNamesInScopeInfo( + binding.info.module.identifier(), + "name" in binding ? binding.name : "" + ); + for (const expr of getSuperClassExpressions(reference.from)) { + if ( + expr.range[0] <= reference.identifier.range[0] && + expr.range[1] >= reference.identifier.range[1] + ) { + for (const variable of expr.variables) { + usedNames.add(variable.name); + } + } + } + addScopeSymbols( + reference.from, + usedNames, + alreadyCheckedScopes, + ignoredScopes + ); + } else { + allUsedNames.add(name); + } + } + } + } + } + + // generate names for symbols + for (const info of moduleToInfoMap.values()) { + const { usedNames: namespaceObjectUsedNames } = getUsedNamesInScopeInfo( + info.module.identifier(), + "" + ); + switch (info.type) { + case "concatenated": { + for (const variable of info.moduleScope.variables) { + const name = variable.name; + const { usedNames, alreadyCheckedScopes } = getUsedNamesInScopeInfo( + info.module.identifier(), + name + ); + if (allUsedNames.has(name) || usedNames.has(name)) { + const references = getAllReferences(variable); + for (const ref of references) { + addScopeSymbols( + ref.from, + usedNames, + alreadyCheckedScopes, + ignoredScopes + ); + } + const newName = this.findNewName( + name, + allUsedNames, + usedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(newName); + info.internalNames.set(name, newName); + topLevelDeclarations.add(newName); + const source = info.source; + const allIdentifiers = new Set( + references.map(r => r.identifier).concat(variable.identifiers) + ); + for (const identifier of allIdentifiers) { + const r = identifier.range; + const path = getPathInAst(info.ast, identifier); + if (path && path.length > 1) { + const maybeProperty = + path[1].type === "AssignmentPattern" && + path[1].left === path[0] + ? path[2] + : path[1]; + if ( + maybeProperty.type === "Property" && + maybeProperty.shorthand + ) { + source.insert(r[1], `: ${newName}`); + continue; + } + } + source.replace(r[0], r[1] - 1, newName); + } + } else { + allUsedNames.add(name); + info.internalNames.set(name, name); + topLevelDeclarations.add(name); + } + } + let namespaceObjectName; + if (info.namespaceExportSymbol) { + namespaceObjectName = info.internalNames.get( + info.namespaceExportSymbol + ); + } else { + namespaceObjectName = this.findNewName( + "namespaceObject", + allUsedNames, + namespaceObjectUsedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(namespaceObjectName); + } + info.namespaceObjectName = namespaceObjectName; + topLevelDeclarations.add(namespaceObjectName); + break; + } + case "external": { + const externalName = this.findNewName( + "", + allUsedNames, + namespaceObjectUsedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(externalName); + info.name = externalName; + topLevelDeclarations.add(externalName); + break; + } + } + if (info.module.buildMeta.exportsType !== "namespace") { + const externalNameInterop = this.findNewName( + "namespaceObject", + allUsedNames, + namespaceObjectUsedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(externalNameInterop); + info.interopNamespaceObjectName = externalNameInterop; + topLevelDeclarations.add(externalNameInterop); + } + if ( + info.module.buildMeta.exportsType === "default" && + info.module.buildMeta.defaultObject !== "redirect" + ) { + const externalNameInterop = this.findNewName( + "namespaceObject2", + allUsedNames, + namespaceObjectUsedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(externalNameInterop); + info.interopNamespaceObject2Name = externalNameInterop; + topLevelDeclarations.add(externalNameInterop); + } + if ( + info.module.buildMeta.exportsType === "dynamic" || + !info.module.buildMeta.exportsType + ) { + const externalNameInterop = this.findNewName( + "default", + allUsedNames, + namespaceObjectUsedNames, + info.module.readableIdentifier(requestShortener) + ); + allUsedNames.add(externalNameInterop); + info.interopDefaultAccessName = externalNameInterop; + topLevelDeclarations.add(externalNameInterop); + } + } + + // Find and replace references to modules + for (const info of moduleToInfoMap.values()) { + if (info.type === "concatenated") { + for (const reference of info.globalScope.through) { + const name = reference.identifier.name; + const match = ConcatenationScope.matchModuleReference(name); + if (match) { + const referencedInfo = modulesWithInfo[match.index]; + if (referencedInfo.type === "reference") + throw new Error("Module reference can't point to a reference"); + const finalName = getFinalName( + moduleGraph, + referencedInfo, + match.ids, + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + match.call, + !match.directImport, + info.module.buildMeta.strictHarmonyModule, + match.asiSafe + ); + const r = reference.identifier.range; + const source = info.source; + // range is extended by 2 chars to cover the appended "._" + source.replace(r[0], r[1] + 1, finalName); + } + } + } + } + + // Map with all root exposed used exports + /** @type {Map<string, function(RequestShortener): string>} */ + const exportsMap = new Map(); + + // Set with all root exposed unused exports + /** @type {Set<string>} */ + const unusedExports = new Set(); + + const rootInfo = /** @type {ConcatenatedModuleInfo} */ ( + moduleToInfoMap.get(this.rootModule) + ); + const strictHarmonyModule = rootInfo.module.buildMeta.strictHarmonyModule; + const exportsInfo = moduleGraph.getExportsInfo(rootInfo.module); + for (const exportInfo of exportsInfo.orderedExports) { + const name = exportInfo.name; + if (exportInfo.provided === false) continue; + const used = exportInfo.getUsedName(undefined, runtime); + if (!used) { + unusedExports.add(name); + continue; + } + exportsMap.set(used, requestShortener => { + try { + const finalName = getFinalName( + moduleGraph, + rootInfo, + [name], + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + false, + false, + strictHarmonyModule, + true + ); + return `/* ${ + exportInfo.isReexport() ? "reexport" : "binding" + } */ ${finalName}`; + } catch (e) { + e.message += `\nwhile generating the root export '${name}' (used name: '${used}')`; + throw e; + } + }); + } + + const result = new ConcatSource(); + + // add harmony compatibility flag (must be first because of possible circular dependencies) + if ( + moduleGraph.getExportsInfo(this).otherExportsInfo.getUsed(runtime) !== + UsageState.Unused + ) { + result.add(`// ESM COMPAT FLAG\n`); + result.add( + runtimeTemplate.defineEsModuleFlagStatement({ + exportsArgument: this.exportsArgument, + runtimeRequirements + }) + ); + } + + // define exports + if (exportsMap.size > 0) { + runtimeRequirements.add(RuntimeGlobals.exports); + runtimeRequirements.add(RuntimeGlobals.definePropertyGetters); + const definitions = []; + for (const [key, value] of exportsMap) { + definitions.push( + `\n ${propertyName(key)}: ${runtimeTemplate.returningFunction( + value(requestShortener) + )}` + ); + } + result.add(`\n// EXPORTS\n`); + result.add( + `${RuntimeGlobals.definePropertyGetters}(${ + this.exportsArgument + }, {${definitions.join(",")}\n});\n` + ); + } + + // list unused exports + if (unusedExports.size > 0) { + result.add( + `\n// UNUSED EXPORTS: ${joinIterableWithComma(unusedExports)}\n` + ); + } + + // generate namespace objects + const namespaceObjectSources = new Map(); + for (const info of neededNamespaceObjects) { + if (info.namespaceExportSymbol) continue; + const nsObj = []; + const exportsInfo = moduleGraph.getExportsInfo(info.module); + for (const exportInfo of exportsInfo.orderedExports) { + if (exportInfo.provided === false) continue; + const usedName = exportInfo.getUsedName(undefined, runtime); + if (usedName) { + const finalName = getFinalName( + moduleGraph, + info, + [exportInfo.name], + moduleToInfoMap, + runtime, + requestShortener, + runtimeTemplate, + neededNamespaceObjects, + false, + undefined, + info.module.buildMeta.strictHarmonyModule, + true + ); + nsObj.push( + `\n ${propertyName(usedName)}: ${runtimeTemplate.returningFunction( + finalName + )}` + ); + } + } + const name = info.namespaceObjectName; + const defineGetters = + nsObj.length > 0 + ? `${RuntimeGlobals.definePropertyGetters}(${name}, {${nsObj.join( + "," + )}\n});\n` + : ""; + if (nsObj.length > 0) + runtimeRequirements.add(RuntimeGlobals.definePropertyGetters); + namespaceObjectSources.set( + info, + ` +// NAMESPACE OBJECT: ${info.module.readableIdentifier(requestShortener)} +var ${name} = {}; +${RuntimeGlobals.makeNamespaceObject}(${name}); +${defineGetters}` + ); + runtimeRequirements.add(RuntimeGlobals.makeNamespaceObject); + } + + // define required namespace objects (must be before evaluation modules) + for (const info of modulesWithInfo) { + if (info.type === "concatenated") { + const source = namespaceObjectSources.get(info); + if (!source) continue; + result.add(source); + } + } + + const chunkInitFragments = []; + + // evaluate modules in order + for (const rawInfo of modulesWithInfo) { + let name; + let isConditional = false; + const info = rawInfo.type === "reference" ? rawInfo.target : rawInfo; + switch (info.type) { + case "concatenated": { + result.add( + `\n;// CONCATENATED MODULE: ${info.module.readableIdentifier( + requestShortener + )}\n` + ); + result.add(info.source); + if (info.chunkInitFragments) { + for (const f of info.chunkInitFragments) chunkInitFragments.push(f); + } + if (info.runtimeRequirements) { + for (const r of info.runtimeRequirements) { + runtimeRequirements.add(r); + } + } + name = info.namespaceObjectName; + break; + } + case "external": { + result.add( + `\n// EXTERNAL MODULE: ${info.module.readableIdentifier( + requestShortener + )}\n` + ); + runtimeRequirements.add(RuntimeGlobals.require); + const { runtimeCondition } = + /** @type {ExternalModuleInfo | ReferenceToModuleInfo} */ (rawInfo); + const condition = runtimeTemplate.runtimeConditionExpression({ + chunkGraph, + runtimeCondition, + runtime, + runtimeRequirements + }); + if (condition !== "true") { + isConditional = true; + result.add(`if (${condition}) {\n`); + } + result.add( + `var ${info.name} = ${RuntimeGlobals.require}(${JSON.stringify( + chunkGraph.getModuleId(info.module) + )});` + ); + name = info.name; + break; + } + default: + // @ts-expect-error never is expected here + throw new Error(`Unsupported concatenation entry type ${info.type}`); + } + if (info.interopNamespaceObjectUsed) { + runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject); + result.add( + `\nvar ${info.interopNamespaceObjectName} = /*#__PURE__*/${RuntimeGlobals.createFakeNamespaceObject}(${name}, 2);` + ); + } + if (info.interopNamespaceObject2Used) { + runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject); + result.add( + `\nvar ${info.interopNamespaceObject2Name} = /*#__PURE__*/${RuntimeGlobals.createFakeNamespaceObject}(${name});` + ); + } + if (info.interopDefaultAccessUsed) { + runtimeRequirements.add(RuntimeGlobals.compatGetDefaultExport); + result.add( + `\nvar ${info.interopDefaultAccessName} = /*#__PURE__*/${RuntimeGlobals.compatGetDefaultExport}(${name});` + ); + } + if (isConditional) { + result.add("\n}"); + } + } + + const data = new Map(); + if (chunkInitFragments.length > 0) + data.set("chunkInitFragments", chunkInitFragments); + data.set("topLevelDeclarations", topLevelDeclarations); + + /** @type {CodeGenerationResult} */ + const resultEntry = { + sources: new Map([["javascript", new CachedSource(result)]]), + data, + runtimeRequirements + }; + + return resultEntry; + } + + /** + * @param {Map<Module, ModuleInfo>} modulesMap modulesMap + * @param {ModuleInfo} info info + * @param {DependencyTemplates} dependencyTemplates dependencyTemplates + * @param {RuntimeTemplate} runtimeTemplate runtimeTemplate + * @param {ModuleGraph} moduleGraph moduleGraph + * @param {ChunkGraph} chunkGraph chunkGraph + * @param {RuntimeSpec} runtime runtime + * @param {CodeGenerationResults} codeGenerationResults codeGenerationResults + */ + _analyseModule( + modulesMap, + info, + dependencyTemplates, + runtimeTemplate, + moduleGraph, + chunkGraph, + runtime, + codeGenerationResults + ) { + if (info.type === "concatenated") { + const m = info.module; + try { + // Create a concatenation scope to track and capture information + const concatenationScope = new ConcatenationScope(modulesMap, info); + + // TODO cache codeGeneration results + const codeGenResult = m.codeGeneration({ + dependencyTemplates, + runtimeTemplate, + moduleGraph, + chunkGraph, + runtime, + concatenationScope, + codeGenerationResults, + sourceTypes: TYPES + }); + const source = codeGenResult.sources.get("javascript"); + const data = codeGenResult.data; + const chunkInitFragments = data && data.get("chunkInitFragments"); + const code = source.source().toString(); + let ast; + try { + ast = JavascriptParser._parse(code, { + sourceType: "module" + }); + } catch (err) { + if ( + err.loc && + typeof err.loc === "object" && + typeof err.loc.line === "number" + ) { + const lineNumber = err.loc.line; + const lines = code.split("\n"); + err.message += + "\n| " + + lines + .slice(Math.max(0, lineNumber - 3), lineNumber + 2) + .join("\n| "); + } + throw err; + } + const scopeManager = eslintScope.analyze(ast, { + ecmaVersion: 6, + sourceType: "module", + optimistic: true, + ignoreEval: true, + impliedStrict: true + }); + const globalScope = scopeManager.acquire(ast); + const moduleScope = globalScope.childScopes[0]; + const resultSource = new ReplaceSource(source); + info.runtimeRequirements = codeGenResult.runtimeRequirements; + info.ast = ast; + info.internalSource = source; + info.source = resultSource; + info.chunkInitFragments = chunkInitFragments; + info.globalScope = globalScope; + info.moduleScope = moduleScope; + } catch (err) { + err.message += `\nwhile analyzing module ${m.identifier()} for concatenation`; + throw err; + } + } + } + + /** + * @param {ModuleGraph} moduleGraph the module graph + * @param {RuntimeSpec} runtime the runtime + * @returns {[ModuleInfoOrReference[], Map<Module, ModuleInfo>]} module info items + */ + _getModulesWithInfo(moduleGraph, runtime) { + const orderedConcatenationList = this._createConcatenationList( + this.rootModule, + this._modules, + runtime, + moduleGraph + ); + /** @type {Map<Module, ModuleInfo>} */ + const map = new Map(); + const list = orderedConcatenationList.map((info, index) => { + let item = map.get(info.module); + if (item === undefined) { + switch (info.type) { + case "concatenated": + item = { + type: "concatenated", + module: info.module, + index, + ast: undefined, + internalSource: undefined, + runtimeRequirements: undefined, + source: undefined, + globalScope: undefined, + moduleScope: undefined, + internalNames: new Map(), + exportMap: undefined, + rawExportMap: undefined, + namespaceExportSymbol: undefined, + namespaceObjectName: undefined, + interopNamespaceObjectUsed: false, + interopNamespaceObjectName: undefined, + interopNamespaceObject2Used: false, + interopNamespaceObject2Name: undefined, + interopDefaultAccessUsed: false, + interopDefaultAccessName: undefined + }; + break; + case "external": + item = { + type: "external", + module: info.module, + runtimeCondition: info.runtimeCondition, + index, + name: undefined, + interopNamespaceObjectUsed: false, + interopNamespaceObjectName: undefined, + interopNamespaceObject2Used: false, + interopNamespaceObject2Name: undefined, + interopDefaultAccessUsed: false, + interopDefaultAccessName: undefined + }; + break; + default: + throw new Error( + `Unsupported concatenation entry type ${info.type}` + ); + } + map.set(item.module, item); + return item; + } else { + /** @type {ReferenceToModuleInfo} */ + const ref = { + type: "reference", + runtimeCondition: info.runtimeCondition, + target: item + }; + return ref; + } + }); + return [list, map]; + } + + findNewName(oldName, usedNamed1, usedNamed2, extraInfo) { + let name = oldName; + + if (name === ConcatenationScope.DEFAULT_EXPORT) { + name = ""; + } + if (name === ConcatenationScope.NAMESPACE_OBJECT_EXPORT) { + name = "namespaceObject"; + } + + // Remove uncool stuff + extraInfo = extraInfo.replace( + /\.+\/|(\/index)?\.([a-zA-Z0-9]{1,4})($|\s|\?)|\s*\+\s*\d+\s*modules/g, + "" + ); + + const splittedInfo = extraInfo.split("/"); + while (splittedInfo.length) { + name = splittedInfo.pop() + (name ? "_" + name : ""); + const nameIdent = Template.toIdentifier(name); + if ( + !usedNamed1.has(nameIdent) && + (!usedNamed2 || !usedNamed2.has(nameIdent)) + ) + return nameIdent; + } + + let i = 0; + let nameWithNumber = Template.toIdentifier(`${name}_${i}`); + while ( + usedNamed1.has(nameWithNumber) || + (usedNamed2 && usedNamed2.has(nameWithNumber)) + ) { + i++; + nameWithNumber = Template.toIdentifier(`${name}_${i}`); + } + return nameWithNumber; + } + + /** + * @param {Hash} hash the hash used to track dependencies + * @param {UpdateHashContext} context context + * @returns {void} + */ + updateHash(hash, context) { + const { chunkGraph, runtime } = context; + for (const info of this._createConcatenationList( + this.rootModule, + this._modules, + intersectRuntime(runtime, this._runtime), + chunkGraph.moduleGraph + )) { + switch (info.type) { + case "concatenated": + info.module.updateHash(hash, context); + break; + case "external": + hash.update(`${chunkGraph.getModuleId(info.module)}`); + // TODO runtimeCondition + break; + } + } + super.updateHash(hash, context); + } + + static deserialize(context) { + const obj = new ConcatenatedModule({ + identifier: undefined, + rootModule: undefined, + modules: undefined, + runtime: undefined + }); + obj.deserialize(context); + return obj; + } +} + +makeSerializable(ConcatenatedModule, "webpack/lib/optimize/ConcatenatedModule"); + +module.exports = ConcatenatedModule; |