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JavascriptModulesPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const vm = require("vm");
const eslintScope = require("eslint-scope");
const { SyncBailHook, SyncHook, SyncWaterfallHook } = require("tapable");
const {
CachedSource,
ConcatSource,
OriginalSource,
PrefixSource,
RawSource,
ReplaceSource
} = require("webpack-sources");
const Compilation = require("../Compilation");
const { tryRunOrWebpackError } = require("../HookWebpackError");
const HotUpdateChunk = require("../HotUpdateChunk");
const InitFragment = require("../InitFragment");
const { JAVASCRIPT_TYPE } = require("../ModuleSourceTypeConstants");
const {
JAVASCRIPT_MODULE_TYPE_AUTO,
JAVASCRIPT_MODULE_TYPE_DYNAMIC,
JAVASCRIPT_MODULE_TYPE_ESM,
WEBPACK_MODULE_TYPE_RUNTIME
} = require("../ModuleTypeConstants");
const NormalModule = require("../NormalModule");
const RuntimeGlobals = require("../RuntimeGlobals");
const Template = require("../Template");
const { last, someInIterable } = require("../util/IterableHelpers");
const StringXor = require("../util/StringXor");
const { compareModulesByFullName } = require("../util/comparators");
const {
RESERVED_NAMES,
addScopeSymbols,
findNewName,
getAllReferences,
getPathInAst,
getUsedNamesInScopeInfo
} = require("../util/concatenate");
const createHash = require("../util/createHash");
const nonNumericOnlyHash = require("../util/nonNumericOnlyHash");
const removeBOM = require("../util/removeBOM");
const { intersectRuntime } = require("../util/runtime");
const JavascriptGenerator = require("./JavascriptGenerator");
const JavascriptParser = require("./JavascriptParser");
/** @typedef {import("eslint-scope").Reference} Reference */
/** @typedef {import("eslint-scope").Scope} Scope */
/** @typedef {import("eslint-scope").Variable} Variable */
/** @typedef {import("estree").Program} Program */
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../config/defaults").OutputNormalizedWithDefaults} OutputOptions */
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../ChunkGraph")} ChunkGraph */
/** @typedef {import("../ChunkGraph").EntryModuleWithChunkGroup} EntryModuleWithChunkGroup */
/** @typedef {import("../CodeGenerationResults")} CodeGenerationResults */
/** @typedef {import("../Compilation").ChunkHashContext} ChunkHashContext */
/** @typedef {import("../Compilation").ExecuteModuleObject} ExecuteModuleObject */
/** @typedef {import("../Compilation").WebpackRequire} WebpackRequire */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../DependencyTemplates")} DependencyTemplates */
/** @typedef {import("../Entrypoint")} Entrypoint */
/** @typedef {import("../Module")} Module */
/** @typedef {import("../Module").BuildInfo} BuildInfo */
/** @typedef {import("../Module").CodeGenerationResultData} CodeGenerationResultData */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("../TemplatedPathPlugin").TemplatePath} TemplatePath */
/** @typedef {import("../WebpackError")} WebpackError */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../util/Hash")} Hash */
/** @typedef {import("../util/concatenate").ScopeSet} ScopeSet */
/** @typedef {import("../util/concatenate").UsedNamesInScopeInfo} UsedNamesInScopeInfo */
/** @type {WeakMap<ChunkGraph, WeakMap<Chunk, boolean>>} */
const chunkHasJsCache = new WeakMap();
/**
* @param {Chunk} chunk a chunk
* @param {ChunkGraph} chunkGraph the chunk graph
* @returns {boolean} true, when a JS file is needed for this chunk
*/
const _chunkHasJs = (chunk, chunkGraph) => {
if (chunkGraph.getNumberOfEntryModules(chunk) > 0) {
for (const module of chunkGraph.getChunkEntryModulesIterable(chunk)) {
if (chunkGraph.getModuleSourceTypes(module).has(JAVASCRIPT_TYPE)) {
return true;
}
}
}
return Boolean(
chunkGraph.getChunkModulesIterableBySourceType(chunk, JAVASCRIPT_TYPE)
);
};
/**
* @param {Chunk} chunk a chunk
* @param {ChunkGraph} chunkGraph the chunk graph
* @returns {boolean} true, when a JS file is needed for this chunk
*/
const chunkHasJs = (chunk, chunkGraph) => {
let innerCache = chunkHasJsCache.get(chunkGraph);
if (innerCache === undefined) {
innerCache = new WeakMap();
chunkHasJsCache.set(chunkGraph, innerCache);
}
const cachedResult = innerCache.get(chunk);
if (cachedResult !== undefined) {
return cachedResult;
}
const result = _chunkHasJs(chunk, chunkGraph);
innerCache.set(chunk, result);
return result;
};
/**
* @param {Chunk} chunk a chunk
* @param {ChunkGraph} chunkGraph the chunk graph
* @returns {boolean} true, when a JS file is needed for this chunk
*/
const chunkHasRuntimeOrJs = (chunk, chunkGraph) => {
if (chunkHasJs(chunk, chunkGraph)) {
return true;
}
if (
chunkGraph.getChunkModulesIterableBySourceType(
chunk,
WEBPACK_MODULE_TYPE_RUNTIME
)
) {
for (const chunkGroup of chunk.groupsIterable) {
for (const c of chunkGroup.chunks) {
if (chunkHasJs(c, chunkGraph)) return true;
}
}
return false;
}
return false;
};
/**
* @param {Module} module a module
* @param {string} code the code
* @returns {string} generated code for the stack
*/
const printGeneratedCodeForStack = (module, code) => {
const lines = code.split("\n");
const n = `${lines.length}`.length;
return `\n\nGenerated code for ${module.identifier()}\n${lines
.map(
/**
* @param {string} line the line
* @param {number} i the index
* @param {string[]} _lines the lines
* @returns {string} the line with line number
*/
(line, i, _lines) => {
const iStr = `${i + 1}`;
return `${" ".repeat(n - iStr.length)}${iStr} | ${line}`;
}
)
.join("\n")}`;
};
/**
* @typedef {object} RenderContext
* @property {Chunk} chunk the chunk
* @property {DependencyTemplates} dependencyTemplates the dependency templates
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {boolean | undefined} strictMode rendering in strict context
*/
/**
* @typedef {object} MainRenderContext
* @property {Chunk} chunk the chunk
* @property {DependencyTemplates} dependencyTemplates the dependency templates
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {string} hash hash to be used for render call
* @property {boolean | undefined} strictMode rendering in strict context
*/
/**
* @typedef {object} ChunkRenderContext
* @property {Chunk} chunk the chunk
* @property {DependencyTemplates} dependencyTemplates the dependency templates
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {InitFragment<ChunkRenderContext>[]} chunkInitFragments init fragments for the chunk
* @property {boolean | undefined} strictMode rendering in strict context
*/
/**
* @typedef {object} RenderBootstrapContext
* @property {Chunk} chunk the chunk
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {string} hash hash to be used for render call
*/
/**
* @typedef {object} StartupRenderContext
* @property {Chunk} chunk the chunk
* @property {DependencyTemplates} dependencyTemplates the dependency templates
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {boolean | undefined} strictMode rendering in strict context
* @property {boolean} inlined inlined
* @property {boolean=} inlinedInIIFE the inlined entry module is wrapped in an IIFE
*/
/**
* @typedef {object} ModuleRenderContext
* @property {Chunk} chunk the chunk
* @property {DependencyTemplates} dependencyTemplates the dependency templates
* @property {RuntimeTemplate} runtimeTemplate the runtime template
* @property {ModuleGraph} moduleGraph the module graph
* @property {ChunkGraph} chunkGraph the chunk graph
* @property {CodeGenerationResults} codeGenerationResults results of code generation
* @property {InitFragment<ChunkRenderContext>[]} chunkInitFragments init fragments for the chunk
* @property {boolean | undefined} strictMode rendering in strict context
* @property {boolean} factory true: renders as factory method, false: pure module content
* @property {boolean=} inlinedInIIFE the inlined entry module is wrapped in an IIFE, existing only when `factory` is set to false
* @property {boolean=} renderInObject render module in object container
*/
/**
* @typedef {object} CompilationHooks
* @property {SyncWaterfallHook<[Source, Module, ModuleRenderContext]>} renderModuleContent
* @property {SyncWaterfallHook<[Source, Module, ModuleRenderContext]>} renderModuleContainer
* @property {SyncWaterfallHook<[Source, Module, ModuleRenderContext]>} renderModulePackage
* @property {SyncWaterfallHook<[Source, RenderContext]>} renderChunk
* @property {SyncWaterfallHook<[Source, RenderContext]>} renderMain
* @property {SyncWaterfallHook<[Source, RenderContext]>} renderContent
* @property {SyncWaterfallHook<[Source, RenderContext]>} render
* @property {SyncWaterfallHook<[Source, Module, StartupRenderContext]>} renderStartup
* @property {SyncWaterfallHook<[string, RenderBootstrapContext]>} renderRequire
* @property {SyncBailHook<[Module, Partial<RenderBootstrapContext>], string | void>} inlineInRuntimeBailout
* @property {SyncBailHook<[Module, RenderContext], string | void>} embedInRuntimeBailout
* @property {SyncBailHook<[RenderContext], string | void>} strictRuntimeBailout
* @property {SyncHook<[Chunk, Hash, ChunkHashContext]>} chunkHash
* @property {SyncBailHook<[Chunk, RenderContext], boolean | void>} useSourceMap
*/
/** @type {WeakMap<Compilation, CompilationHooks>} */
const compilationHooksMap = new WeakMap();
const PLUGIN_NAME = "JavascriptModulesPlugin";
/** @typedef {{ header: string[], beforeStartup: string[], startup: string[], afterStartup: string[], allowInlineStartup: boolean }} Bootstrap */
class JavascriptModulesPlugin {
/**
* @param {Compilation} compilation the compilation
* @returns {CompilationHooks} the attached hooks
*/
static getCompilationHooks(compilation) {
if (!(compilation instanceof Compilation)) {
throw new TypeError(
"The 'compilation' argument must be an instance of Compilation"
);
}
let hooks = compilationHooksMap.get(compilation);
if (hooks === undefined) {
hooks = {
renderModuleContent: new SyncWaterfallHook([
"source",
"module",
"moduleRenderContext"
]),
renderModuleContainer: new SyncWaterfallHook([
"source",
"module",
"moduleRenderContext"
]),
renderModulePackage: new SyncWaterfallHook([
"source",
"module",
"moduleRenderContext"
]),
render: new SyncWaterfallHook(["source", "renderContext"]),
renderContent: new SyncWaterfallHook(["source", "renderContext"]),
renderStartup: new SyncWaterfallHook([
"source",
"module",
"startupRenderContext"
]),
renderChunk: new SyncWaterfallHook(["source", "renderContext"]),
renderMain: new SyncWaterfallHook(["source", "renderContext"]),
renderRequire: new SyncWaterfallHook(["code", "renderContext"]),
inlineInRuntimeBailout: new SyncBailHook(["module", "renderContext"]),
embedInRuntimeBailout: new SyncBailHook(["module", "renderContext"]),
strictRuntimeBailout: new SyncBailHook(["renderContext"]),
chunkHash: new SyncHook(["chunk", "hash", "context"]),
useSourceMap: new SyncBailHook(["chunk", "renderContext"])
};
compilationHooksMap.set(compilation, hooks);
}
return hooks;
}
constructor(options = {}) {
this.options = options;
/** @type {WeakMap<Source, { source: Source, needModule: boolean, needExports: boolean, needRequire: boolean, needThisAsExports: boolean, needStrict: boolean | undefined, renderShorthand: boolean }>} */
this._moduleFactoryCache = new WeakMap();
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
PLUGIN_NAME,
(compilation, { normalModuleFactory }) => {
const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
for (const type of [
JAVASCRIPT_MODULE_TYPE_AUTO,
JAVASCRIPT_MODULE_TYPE_DYNAMIC,
JAVASCRIPT_MODULE_TYPE_ESM
]) {
normalModuleFactory.hooks.createParser
.for(type)
.tap(PLUGIN_NAME, (options) => {
switch (type) {
case JAVASCRIPT_MODULE_TYPE_AUTO: {
return new JavascriptParser("auto", { parse: options.parse });
}
case JAVASCRIPT_MODULE_TYPE_DYNAMIC: {
return new JavascriptParser("script", {
parse: options.parse
});
}
case JAVASCRIPT_MODULE_TYPE_ESM: {
return new JavascriptParser("module", {
parse: options.parse
});
}
}
});
normalModuleFactory.hooks.createGenerator
.for(type)
.tap(PLUGIN_NAME, () => new JavascriptGenerator());
NormalModule.getCompilationHooks(compilation).processResult.tap(
PLUGIN_NAME,
(result, module) => {
if (module.type === type) {
const [source, ...rest] = result;
return [removeBOM(source), ...rest];
}
return result;
}
);
}
compilation.hooks.renderManifest.tap(PLUGIN_NAME, (result, options) => {
const {
hash,
chunk,
chunkGraph,
moduleGraph,
runtimeTemplate,
dependencyTemplates,
outputOptions,
codeGenerationResults
} = options;
const hotUpdateChunk = chunk instanceof HotUpdateChunk ? chunk : null;
const filenameTemplate =
JavascriptModulesPlugin.getChunkFilenameTemplate(
chunk,
outputOptions
);
/** @type {() => Source} */
let render;
if (hotUpdateChunk) {
render = () =>
this.renderChunk(
{
chunk,
dependencyTemplates,
runtimeTemplate,
moduleGraph,
chunkGraph,
codeGenerationResults,
strictMode: runtimeTemplate.isModule()
},
hooks
);
} else if (chunk.hasRuntime()) {
if (!chunkHasRuntimeOrJs(chunk, chunkGraph)) {
return result;
}
render = () =>
this.renderMain(
{
hash,
chunk,
dependencyTemplates,
runtimeTemplate,
moduleGraph,
chunkGraph,
codeGenerationResults,
strictMode: runtimeTemplate.isModule()
},
hooks,
compilation
);
} else {
if (!chunkHasJs(chunk, chunkGraph)) {
return result;
}
render = () =>
this.renderChunk(
{
chunk,
dependencyTemplates,
runtimeTemplate,
moduleGraph,
chunkGraph,
codeGenerationResults,
strictMode: runtimeTemplate.isModule()
},
hooks
);
}
result.push({
render,
filenameTemplate,
pathOptions: {
hash,
runtime: chunk.runtime,
chunk,
contentHashType: "javascript"
},
info: {
javascriptModule: compilation.runtimeTemplate.isModule()
},
identifier: hotUpdateChunk
? `hotupdatechunk${chunk.id}`
: `chunk${chunk.id}`,
hash: chunk.contentHash.javascript
});
return result;
});
compilation.hooks.chunkHash.tap(PLUGIN_NAME, (chunk, hash, context) => {
hooks.chunkHash.call(chunk, hash, context);
if (chunk.hasRuntime()) {
this.updateHashWithBootstrap(
hash,
{
hash: "0000",
chunk,
codeGenerationResults: context.codeGenerationResults,
chunkGraph: context.chunkGraph,
moduleGraph: context.moduleGraph,
runtimeTemplate: context.runtimeTemplate
},
hooks
);
}
});
compilation.hooks.contentHash.tap(PLUGIN_NAME, (chunk) => {
const {
chunkGraph,
moduleGraph,
runtimeTemplate,
outputOptions: {
hashSalt,
hashDigest,
hashDigestLength,
hashFunction
}
} = compilation;
const codeGenerationResults =
/** @type {CodeGenerationResults} */
(compilation.codeGenerationResults);
const hash = createHash(hashFunction);
if (hashSalt) hash.update(hashSalt);
if (chunk.hasRuntime()) {
this.updateHashWithBootstrap(
hash,
{
hash: "0000",
chunk,
codeGenerationResults,
chunkGraph: compilation.chunkGraph,
moduleGraph: compilation.moduleGraph,
runtimeTemplate: compilation.runtimeTemplate
},
hooks
);
} else {
hash.update(`${chunk.id} `);
hash.update(chunk.ids ? chunk.ids.join(",") : "");
}
hooks.chunkHash.call(chunk, hash, {
chunkGraph,
codeGenerationResults,
moduleGraph,
runtimeTemplate
});
const modules = chunkGraph.getChunkModulesIterableBySourceType(
chunk,
JAVASCRIPT_TYPE
);
if (modules) {
const xor = new StringXor();
for (const m of modules) {
xor.add(chunkGraph.getModuleHash(m, chunk.runtime));
}
xor.updateHash(hash);
}
const runtimeModules = chunkGraph.getChunkModulesIterableBySourceType(
chunk,
WEBPACK_MODULE_TYPE_RUNTIME
);
if (runtimeModules) {
const xor = new StringXor();
for (const m of runtimeModules) {
xor.add(chunkGraph.getModuleHash(m, chunk.runtime));
}
xor.updateHash(hash);
}
const digest = hash.digest(hashDigest);
chunk.contentHash.javascript = nonNumericOnlyHash(
digest,
hashDigestLength
);
});
compilation.hooks.additionalTreeRuntimeRequirements.tap(
PLUGIN_NAME,
(chunk, set, { chunkGraph }) => {
if (
!set.has(RuntimeGlobals.startupNoDefault) &&
chunkGraph.hasChunkEntryDependentChunks(chunk)
) {
set.add(RuntimeGlobals.onChunksLoaded);
set.add(RuntimeGlobals.exports);
set.add(RuntimeGlobals.require);
}
}
);
compilation.hooks.executeModule.tap(PLUGIN_NAME, (options, context) => {
const source =
options.codeGenerationResult.sources.get(JAVASCRIPT_TYPE);
if (source === undefined) return;
const { module } = options;
const code = source.source();
/** @type {(this: ExecuteModuleObject["exports"], exports: ExecuteModuleObject["exports"], moduleObject: ExecuteModuleObject, webpackRequire: WebpackRequire) => void} */
const fn = vm.runInThisContext(
`(function(${module.moduleArgument}, ${module.exportsArgument}, ${RuntimeGlobals.require}) {\n${code}\n/**/})`,
{
filename: module.identifier(),
lineOffset: -1
}
);
const moduleObject =
/** @type {ExecuteModuleObject} */
(options.moduleObject);
try {
fn.call(
moduleObject.exports,
moduleObject,
moduleObject.exports,
/** @type {WebpackRequire} */
(context.__webpack_require__)
);
} catch (err) {
/** @type {Error} */
(err).stack += printGeneratedCodeForStack(
options.module,
/** @type {string} */ (code)
);
throw err;
}
});
compilation.hooks.executeModule.tap(PLUGIN_NAME, (options, context) => {
const source = options.codeGenerationResult.sources.get("runtime");
if (source === undefined) return;
let code = source.source();
if (typeof code !== "string") code = code.toString();
/** @type {(this: null, webpackRequire: WebpackRequire) => void} */
const fn = vm.runInThisContext(
`(function(${RuntimeGlobals.require}) {\n${code}\n/**/})`,
{
filename: options.module.identifier(),
lineOffset: -1
}
);
try {
// eslint-disable-next-line no-useless-call
fn.call(
null,
/** @type {WebpackRequire} */
(context.__webpack_require__)
);
} catch (err) {
/** @type {Error} */
(err).stack += printGeneratedCodeForStack(options.module, code);
throw err;
}
});
}
);
}
/**
* @param {Chunk} chunk chunk
* @param {OutputOptions} outputOptions output options
* @returns {TemplatePath} used filename template
*/
static getChunkFilenameTemplate(chunk, outputOptions) {
if (chunk.filenameTemplate) {
return chunk.filenameTemplate;
} else if (chunk instanceof HotUpdateChunk) {
return outputOptions.hotUpdateChunkFilename;
} else if (chunk.canBeInitial()) {
return outputOptions.filename;
}
return outputOptions.chunkFilename;
}
/**
* @param {Module} module the rendered module
* @param {ModuleRenderContext} renderContext options object
* @param {CompilationHooks} hooks hooks
* @returns {Source | null} the newly generated source from rendering
*/
renderModule(module, renderContext, hooks) {
const {
chunk,
chunkGraph,
runtimeTemplate,
codeGenerationResults,
strictMode,
factory,
renderInObject
} = renderContext;
try {
const codeGenResult = codeGenerationResults.get(module, chunk.runtime);
const moduleSource = codeGenResult.sources.get(JAVASCRIPT_TYPE);
if (!moduleSource) return null;
if (codeGenResult.data !== undefined) {
const chunkInitFragments = codeGenResult.data.get("chunkInitFragments");
if (chunkInitFragments) {
for (const i of chunkInitFragments) {
renderContext.chunkInitFragments.push(i);
}
}
}
const moduleSourcePostContent = tryRunOrWebpackError(
() =>
hooks.renderModuleContent.call(moduleSource, module, renderContext),
"JavascriptModulesPlugin.getCompilationHooks().renderModuleContent"
);
/** @type {Source} */
let moduleSourcePostContainer;
if (factory) {
const runtimeRequirements = chunkGraph.getModuleRuntimeRequirements(
module,
chunk.runtime
);
const needModule = runtimeRequirements.has(RuntimeGlobals.module);
const needExports = runtimeRequirements.has(RuntimeGlobals.exports);
const needRequire =
runtimeRequirements.has(RuntimeGlobals.require) ||
runtimeRequirements.has(RuntimeGlobals.requireScope);
const needThisAsExports = runtimeRequirements.has(
RuntimeGlobals.thisAsExports
);
const needStrict =
/** @type {BuildInfo} */
(module.buildInfo).strict && !strictMode;
const cacheEntry = this._moduleFactoryCache.get(
moduleSourcePostContent
);
const renderShorthand =
renderInObject === true && runtimeTemplate.supportsMethodShorthand();
/** @type {Source} */
let source;
if (
cacheEntry &&
cacheEntry.needModule === needModule &&
cacheEntry.needExports === needExports &&
cacheEntry.needRequire === needRequire &&
cacheEntry.needThisAsExports === needThisAsExports &&
cacheEntry.needStrict === needStrict &&
cacheEntry.renderShorthand === renderShorthand
) {
source = cacheEntry.source;
} else {
const factorySource = new ConcatSource();
/** @type {string[]} */
const args = [];
if (needExports || needRequire || needModule) {
args.push(
needModule
? module.moduleArgument
: `__unused_webpack_${module.moduleArgument}`
);
}
if (needExports || needRequire) {
args.push(
needExports
? module.exportsArgument
: `__unused_webpack_${module.exportsArgument}`
);
}
if (needRequire) args.push(RuntimeGlobals.require);
if (renderShorthand) {
// we can optimize function to methodShorthand if render module factory in object
factorySource.add(`(${args.join(", ")}) {\n\n`);
} else if (
!needThisAsExports &&
runtimeTemplate.supportsArrowFunction()
) {
factorySource.add(`/***/ ((${args.join(", ")}) => {\n\n`);
} else {
factorySource.add(`/***/ (function(${args.join(", ")}) {\n\n`);
}
if (needStrict) {
factorySource.add('"use strict";\n');
}
factorySource.add(moduleSourcePostContent);
factorySource.add(`\n\n/***/ }${renderShorthand ? "" : ")"}`);
source = new CachedSource(factorySource);
this._moduleFactoryCache.set(moduleSourcePostContent, {
source,
needModule,
needExports,
needRequire,
needThisAsExports,
needStrict,
renderShorthand
});
}
moduleSourcePostContainer = tryRunOrWebpackError(
() => hooks.renderModuleContainer.call(source, module, renderContext),
"JavascriptModulesPlugin.getCompilationHooks().renderModuleContainer"
);
} else {
moduleSourcePostContainer = moduleSourcePostContent;
}
return tryRunOrWebpackError(
() =>
hooks.renderModulePackage.call(
moduleSourcePostContainer,
module,
renderContext
),
"JavascriptModulesPlugin.getCompilationHooks().renderModulePackage"
);
} catch (err) {
/** @type {WebpackError} */
(err).module = module;
throw err;
}
}
/**
* @param {RenderContext} renderContext the render context
* @param {CompilationHooks} hooks hooks
* @returns {Source} the rendered source
*/
renderChunk(renderContext, hooks) {
const { chunk, chunkGraph, runtimeTemplate } = renderContext;
const modules = chunkGraph.getOrderedChunkModulesIterableBySourceType(
chunk,
JAVASCRIPT_TYPE,
compareModulesByFullName(runtimeTemplate.compilation.compiler)
);
const allModules = modules ? [...modules] : [];
/** @type {undefined | string} */
let strictHeader;
let allStrict = renderContext.strictMode;
if (
!allStrict &&
allModules.every((m) => /** @type {BuildInfo} */ (m.buildInfo).strict)
) {
const strictBailout = hooks.strictRuntimeBailout.call(renderContext);
strictHeader = strictBailout
? `// runtime can't be in strict mode because ${strictBailout}.\n`
: '"use strict";\n';
if (!strictBailout) allStrict = true;
}
/** @type {ChunkRenderContext} */
const chunkRenderContext = {
...renderContext,
chunkInitFragments: [],
strictMode: allStrict
};
const moduleSources =
Template.renderChunkModules(
chunkRenderContext,
allModules,
(module, renderInObject) =>
this.renderModule(
module,
{ ...chunkRenderContext, factory: true, renderInObject },
hooks
)
) || new RawSource("{}");
let source = tryRunOrWebpackError(
() => hooks.renderChunk.call(moduleSources, chunkRenderContext),
"JavascriptModulesPlugin.getCompilationHooks().renderChunk"
);
source = tryRunOrWebpackError(
() => hooks.renderContent.call(source, chunkRenderContext),
"JavascriptModulesPlugin.getCompilationHooks().renderContent"
);
if (!source) {
throw new Error(
"JavascriptModulesPlugin error: JavascriptModulesPlugin.getCompilationHooks().renderContent plugins should return something"
);
}
source = InitFragment.addToSource(
source,
chunkRenderContext.chunkInitFragments,
chunkRenderContext
);
source = tryRunOrWebpackError(
() => hooks.render.call(source, chunkRenderContext),
"JavascriptModulesPlugin.getCompilationHooks().render"
);
if (!source) {
throw new Error(
"JavascriptModulesPlugin error: JavascriptModulesPlugin.getCompilationHooks().render plugins should return something"
);
}
chunk.rendered = true;
return strictHeader
? new ConcatSource(strictHeader, source, ";")
: renderContext.runtimeTemplate.isModule()
? source
: new ConcatSource(source, ";");
}
/**
* @param {MainRenderContext} renderContext options object
* @param {CompilationHooks} hooks hooks
* @param {Compilation} compilation the compilation
* @returns {Source} the newly generated source from rendering
*/
renderMain(renderContext, hooks, compilation) {
const { chunk, chunkGraph, runtimeTemplate } = renderContext;
const runtimeRequirements = chunkGraph.getTreeRuntimeRequirements(chunk);
const iife = runtimeTemplate.isIIFE();
const bootstrap = this.renderBootstrap(renderContext, hooks);
const useSourceMap = hooks.useSourceMap.call(chunk, renderContext);
/** @type {Module[]} */
const allModules = [
...(chunkGraph.getOrderedChunkModulesIterableBySourceType(
chunk,
JAVASCRIPT_TYPE,
compareModulesByFullName(runtimeTemplate.compilation.compiler)
) || [])
];
const hasEntryModules = chunkGraph.getNumberOfEntryModules(chunk) > 0;
/** @type {Set<Module> | undefined} */
let inlinedModules;
if (bootstrap.allowInlineStartup && hasEntryModules) {
inlinedModules = new Set(chunkGraph.getChunkEntryModulesIterable(chunk));
}
const source = new ConcatSource();
/** @type {string} */
let prefix;
if (iife) {
if (runtimeTemplate.supportsArrowFunction()) {
source.add("/******/ (() => { // webpackBootstrap\n");
} else {
source.add("/******/ (function() { // webpackBootstrap\n");
}
prefix = "/******/ \t";
} else {
prefix = "/******/ ";
}
let allStrict = renderContext.strictMode;
if (
!allStrict &&
allModules.every((m) => /** @type {BuildInfo} */ (m.buildInfo).strict)
) {
const strictBailout = hooks.strictRuntimeBailout.call(renderContext);
if (strictBailout) {
source.add(
`${
prefix
}// runtime can't be in strict mode because ${strictBailout}.\n`
);
} else {
allStrict = true;
source.add(`${prefix}"use strict";\n`);
}
}
/** @type {ChunkRenderContext} */
const chunkRenderContext = {
...renderContext,
chunkInitFragments: [],
strictMode: allStrict
};
const chunkModules = Template.renderChunkModules(
chunkRenderContext,
inlinedModules
? allModules.filter(
(m) => !(/** @type {Set<Module>} */ (inlinedModules).has(m))
)
: allModules,
(module, renderInObject) =>
this.renderModule(
module,
{ ...chunkRenderContext, factory: true, renderInObject },
hooks
),
prefix
);
if (
chunkModules ||
runtimeRequirements.has(RuntimeGlobals.moduleFactories) ||
runtimeRequirements.has(RuntimeGlobals.moduleFactoriesAddOnly) ||
runtimeRequirements.has(RuntimeGlobals.require)
) {
source.add(`${prefix}var __webpack_modules__ = (`);
source.add(chunkModules || "{}");
source.add(");\n");
source.add(
"/************************************************************************/\n"
);
}
if (bootstrap.header.length > 0) {
const header = `${Template.asString(bootstrap.header)}\n`;
source.add(
new PrefixSource(
prefix,
useSourceMap
? new OriginalSource(header, "webpack/bootstrap")
: new RawSource(header)
)
);
source.add(
"/************************************************************************/\n"
);
}
const runtimeModules =
renderContext.chunkGraph.getChunkRuntimeModulesInOrder(chunk);
if (runtimeModules.length > 0) {
source.add(
new PrefixSource(
prefix,
Template.renderRuntimeModules(runtimeModules, chunkRenderContext)
)
);
source.add(
"/************************************************************************/\n"