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NormalModule.js
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NormalModule.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const parseJson = require("json-parse-even-better-errors");
const { getContext, runLoaders } = require("loader-runner");
const querystring = require("querystring");
const { HookMap, SyncHook, AsyncSeriesBailHook } = require("tapable");
const {
CachedSource,
OriginalSource,
RawSource,
SourceMapSource
} = require("webpack-sources");
const Compilation = require("./Compilation");
const HookWebpackError = require("./HookWebpackError");
const Module = require("./Module");
const ModuleBuildError = require("./ModuleBuildError");
const ModuleError = require("./ModuleError");
const ModuleGraphConnection = require("./ModuleGraphConnection");
const ModuleParseError = require("./ModuleParseError");
const { JAVASCRIPT_MODULE_TYPE_AUTO } = require("./ModuleTypeConstants");
const ModuleWarning = require("./ModuleWarning");
const RuntimeGlobals = require("./RuntimeGlobals");
const UnhandledSchemeError = require("./UnhandledSchemeError");
const WebpackError = require("./WebpackError");
const formatLocation = require("./formatLocation");
const LazySet = require("./util/LazySet");
const { isSubset } = require("./util/SetHelpers");
const { getScheme } = require("./util/URLAbsoluteSpecifier");
const {
compareLocations,
concatComparators,
compareSelect,
keepOriginalOrder
} = require("./util/comparators");
const createHash = require("./util/createHash");
const { createFakeHook } = require("./util/deprecation");
const { join } = require("./util/fs");
const {
contextify,
absolutify,
makePathsRelative
} = require("./util/identifier");
const makeSerializable = require("./util/makeSerializable");
const memoize = require("./util/memoize");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../declarations/WebpackOptions").Mode} Mode */
/** @typedef {import("../declarations/WebpackOptions").ResolveOptions} ResolveOptions */
/** @typedef {import("../declarations/WebpackOptions").WebpackOptionsNormalized} WebpackOptions */
/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("./DependencyTemplates")} DependencyTemplates */
/** @typedef {import("./Generator")} Generator */
/** @typedef {import("./Module").BuildInfo} BuildInfo */
/** @typedef {import("./Module").BuildMeta} BuildMeta */
/** @typedef {import("./Module").CodeGenerationContext} CodeGenerationContext */
/** @typedef {import("./Module").CodeGenerationResult} CodeGenerationResult */
/** @typedef {import("./Module").ConcatenationBailoutReasonContext} ConcatenationBailoutReasonContext */
/** @typedef {import("./Module").KnownBuildInfo} KnownBuildInfo */
/** @typedef {import("./Module").LibIdentOptions} LibIdentOptions */
/** @typedef {import("./Module").NeedBuildContext} NeedBuildContext */
/** @typedef {import("./Module").SourceTypes} SourceTypes */
/** @typedef {import("./Module").UnsafeCacheData} UnsafeCacheData */
/** @typedef {import("./ModuleGraph")} ModuleGraph */
/** @typedef {import("./ModuleGraphConnection").ConnectionState} ConnectionState */
/** @typedef {import("./ModuleTypeConstants").JavaScriptModuleTypes} JavaScriptModuleTypes */
/** @typedef {import("./NormalModuleFactory")} NormalModuleFactory */
/** @typedef {import("./Parser")} Parser */
/** @typedef {import("./RequestShortener")} RequestShortener */
/** @typedef {import("./ResolverFactory").ResolveContext} ResolveContext */
/** @typedef {import("./ResolverFactory").ResolverWithOptions} ResolverWithOptions */
/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("./logging/Logger").Logger} WebpackLogger */
/** @typedef {import("./serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("./serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("./util/Hash")} Hash */
/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
/** @typedef {import("./util/createHash").Algorithm} Algorithm */
/**
* @template T
* @typedef {import("./util/deprecation").FakeHook<T>} FakeHook
*/
/** @typedef {{[k: string]: any}} ParserOptions */
/** @typedef {{[k: string]: any}} GeneratorOptions */
/** @typedef {UnsafeCacheData & { parser: undefined | Parser, parserOptions: undefined | ParserOptions, generator: undefined | Generator, generatorOptions: undefined | GeneratorOptions }} NormalModuleUnsafeCacheData */
/**
* @template T
* @typedef {import("../declarations/LoaderContext").LoaderContext<T>} LoaderContext
*/
/**
* @template T
* @typedef {import("../declarations/LoaderContext").NormalModuleLoaderContext<T>} NormalModuleLoaderContext
*/
/**
* @typedef {object} SourceMap
* @property {number} version
* @property {string[]} sources
* @property {string} mappings
* @property {string=} file
* @property {string=} sourceRoot
* @property {string[]=} sourcesContent
* @property {string[]=} names
*/
const getInvalidDependenciesModuleWarning = memoize(() =>
require("./InvalidDependenciesModuleWarning")
);
const getValidate = memoize(() => require("schema-utils").validate);
const ABSOLUTE_PATH_REGEX = /^([a-zA-Z]:\\|\\\\|\/)/;
/**
* @typedef {object} LoaderItem
* @property {string} loader
* @property {any} options
* @property {string?} ident
* @property {string?} type
*/
/**
* @param {string} context absolute context path
* @param {string} source a source path
* @param {object=} associatedObjectForCache an object to which the cache will be attached
* @returns {string} new source path
*/
const contextifySourceUrl = (context, source, associatedObjectForCache) => {
if (source.startsWith("webpack://")) return source;
return `webpack://${makePathsRelative(
context,
source,
associatedObjectForCache
)}`;
};
/**
* @param {string} context absolute context path
* @param {SourceMap} sourceMap a source map
* @param {object=} associatedObjectForCache an object to which the cache will be attached
* @returns {SourceMap} new source map
*/
const contextifySourceMap = (context, sourceMap, associatedObjectForCache) => {
if (!Array.isArray(sourceMap.sources)) return sourceMap;
const { sourceRoot } = sourceMap;
/** @type {function(string): string} */
const mapper = !sourceRoot
? source => source
: sourceRoot.endsWith("/")
? source =>
source.startsWith("/")
? `${sourceRoot.slice(0, -1)}${source}`
: `${sourceRoot}${source}`
: source =>
source.startsWith("/")
? `${sourceRoot}${source}`
: `${sourceRoot}/${source}`;
const newSources = sourceMap.sources.map(source =>
contextifySourceUrl(context, mapper(source), associatedObjectForCache)
);
return {
...sourceMap,
file: "x",
sourceRoot: undefined,
sources: newSources
};
};
/**
* @param {string | Buffer} input the input
* @returns {string} the converted string
*/
const asString = input => {
if (Buffer.isBuffer(input)) {
return input.toString("utf-8");
}
return input;
};
/**
* @param {string | Buffer} input the input
* @returns {Buffer} the converted buffer
*/
const asBuffer = input => {
if (!Buffer.isBuffer(input)) {
return Buffer.from(input, "utf-8");
}
return input;
};
class NonErrorEmittedError extends WebpackError {
/**
* @param {any} error value which is not an instance of Error
*/
constructor(error) {
super();
this.name = "NonErrorEmittedError";
this.message = `(Emitted value instead of an instance of Error) ${error}`;
}
}
makeSerializable(
NonErrorEmittedError,
"webpack/lib/NormalModule",
"NonErrorEmittedError"
);
/**
* @typedef {object} NormalModuleCompilationHooks
* @property {SyncHook<[LoaderContext<any>, NormalModule]>} loader
* @property {SyncHook<[LoaderItem[], NormalModule, LoaderContext<any>]>} beforeLoaders
* @property {SyncHook<[NormalModule]>} beforeParse
* @property {SyncHook<[NormalModule]>} beforeSnapshot
* @property {HookMap<FakeHook<AsyncSeriesBailHook<[string, NormalModule], string | Buffer | null>>>} readResourceForScheme
* @property {HookMap<AsyncSeriesBailHook<[LoaderContext<any>], string | Buffer | null>>} readResource
* @property {AsyncSeriesBailHook<[NormalModule, NeedBuildContext], boolean>} needBuild
*/
/**
* @typedef {object} NormalModuleCreateData
* @property {string=} layer an optional layer in which the module is
* @property {JavaScriptModuleTypes | ""} type module type. When deserializing, this is set to an empty string "".
* @property {string} request request string
* @property {string} userRequest request intended by user (without loaders from config)
* @property {string} rawRequest request without resolving
* @property {LoaderItem[]} loaders list of loaders
* @property {string} resource path + query of the real resource
* @property {Record<string, any>=} resourceResolveData resource resolve data
* @property {string} context context directory for resolving
* @property {string=} matchResource path + query of the matched resource (virtual)
* @property {Parser} parser the parser used
* @property {ParserOptions=} parserOptions the options of the parser used
* @property {Generator} generator the generator used
* @property {GeneratorOptions=} generatorOptions the options of the generator used
* @property {ResolveOptions=} resolveOptions options used for resolving requests from this module
*/
/** @type {WeakMap<Compilation, NormalModuleCompilationHooks>} */
const compilationHooksMap = new WeakMap();
class NormalModule extends Module {
/**
* @param {Compilation} compilation the compilation
* @returns {NormalModuleCompilationHooks} 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 = {
loader: new SyncHook(["loaderContext", "module"]),
beforeLoaders: new SyncHook(["loaders", "module", "loaderContext"]),
beforeParse: new SyncHook(["module"]),
beforeSnapshot: new SyncHook(["module"]),
// TODO webpack 6 deprecate
readResourceForScheme: new HookMap(scheme => {
const hook =
/** @type {NormalModuleCompilationHooks} */
(hooks).readResource.for(scheme);
return createFakeHook(
/** @type {AsyncSeriesBailHook<[string, NormalModule], string | Buffer | null>} */ ({
tap: (options, fn) =>
hook.tap(options, loaderContext =>
fn(
loaderContext.resource,
/** @type {NormalModule} */ (loaderContext._module)
)
),
tapAsync: (options, fn) =>
hook.tapAsync(options, (loaderContext, callback) =>
fn(
loaderContext.resource,
/** @type {NormalModule} */ (loaderContext._module),
callback
)
),
tapPromise: (options, fn) =>
hook.tapPromise(options, loaderContext =>
fn(
loaderContext.resource,
/** @type {NormalModule} */ (loaderContext._module)
)
)
})
);
}),
readResource: new HookMap(
() => new AsyncSeriesBailHook(["loaderContext"])
),
needBuild: new AsyncSeriesBailHook(["module", "context"])
};
compilationHooksMap.set(
compilation,
/** @type {NormalModuleCompilationHooks} */ (hooks)
);
}
return /** @type {NormalModuleCompilationHooks} */ (hooks);
}
/**
* @param {NormalModuleCreateData} options options object
*/
constructor({
layer,
type,
request,
userRequest,
rawRequest,
loaders,
resource,
resourceResolveData,
context,
matchResource,
parser,
parserOptions,
generator,
generatorOptions,
resolveOptions
}) {
super(type, context || getContext(resource), layer);
// Info from Factory
/** @type {string} */
this.request = request;
/** @type {string} */
this.userRequest = userRequest;
/** @type {string} */
this.rawRequest = rawRequest;
/** @type {boolean} */
this.binary = /^(asset|webassembly)\b/.test(type);
/** @type {undefined | Parser} */
this.parser = parser;
/** @type {undefined | ParserOptions} */
this.parserOptions = parserOptions;
/** @type {undefined | Generator} */
this.generator = generator;
/** @type {undefined | GeneratorOptions} */
this.generatorOptions = generatorOptions;
/** @type {string} */
this.resource = resource;
this.resourceResolveData = resourceResolveData;
/** @type {string | undefined} */
this.matchResource = matchResource;
/** @type {LoaderItem[]} */
this.loaders = loaders;
if (resolveOptions !== undefined) {
// already declared in super class
this.resolveOptions = resolveOptions;
}
// Info from Build
/** @type {WebpackError | null} */
this.error = null;
/**
* @private
* @type {Source | null}
*/
this._source = null;
/**
* @private
* @type {Map<string | undefined, number> | undefined}
*/
this._sourceSizes = undefined;
/**
* @private
* @type {undefined | SourceTypes}
*/
this._sourceTypes = undefined;
// Cache
this._lastSuccessfulBuildMeta = {};
this._forceBuild = true;
this._isEvaluatingSideEffects = false;
/** @type {WeakSet<ModuleGraph> | undefined} */
this._addedSideEffectsBailout = undefined;
/** @type {Map<string, any>} */
this._codeGeneratorData = new Map();
}
/**
* @returns {string} a unique identifier of the module
*/
identifier() {
if (this.layer === null) {
if (this.type === JAVASCRIPT_MODULE_TYPE_AUTO) {
return this.request;
}
return `${this.type}|${this.request}`;
}
return `${this.type}|${this.request}|${this.layer}`;
}
/**
* @param {RequestShortener} requestShortener the request shortener
* @returns {string} a user readable identifier of the module
*/
readableIdentifier(requestShortener) {
return /** @type {string} */ (requestShortener.shorten(this.userRequest));
}
/**
* @param {LibIdentOptions} options options
* @returns {string | null} an identifier for library inclusion
*/
libIdent(options) {
let ident = contextify(
options.context,
this.userRequest,
options.associatedObjectForCache
);
if (this.layer) ident = `(${this.layer})/${ident}`;
return ident;
}
/**
* @returns {string | null} absolute path which should be used for condition matching (usually the resource path)
*/
nameForCondition() {
const resource = this.matchResource || this.resource;
const idx = resource.indexOf("?");
if (idx >= 0) return resource.slice(0, idx);
return resource;
}
/**
* 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) {
super.updateCacheModule(module);
const m = /** @type {NormalModule} */ (module);
this.binary = m.binary;
this.request = m.request;
this.userRequest = m.userRequest;
this.rawRequest = m.rawRequest;
this.parser = m.parser;
this.parserOptions = m.parserOptions;
this.generator = m.generator;
this.generatorOptions = m.generatorOptions;
this.resource = m.resource;
this.resourceResolveData = m.resourceResolveData;
this.context = m.context;
this.matchResource = m.matchResource;
this.loaders = m.loaders;
}
/**
* Assuming this module is in the cache. Remove internal references to allow freeing some memory.
*/
cleanupForCache() {
// Make sure to cache types and sizes before cleanup when this module has been built
// They are accessed by the stats and we don't want them to crash after cleanup
// TODO reconsider this for webpack 6
if (this.buildInfo) {
if (this._sourceTypes === undefined) this.getSourceTypes();
for (const type of /** @type {SourceTypes} */ (this._sourceTypes)) {
this.size(type);
}
}
super.cleanupForCache();
this.parser = undefined;
this.parserOptions = undefined;
this.generator = undefined;
this.generatorOptions = undefined;
}
/**
* Module should be unsafe cached. Get data that's needed for that.
* This data will be passed to restoreFromUnsafeCache later.
* @returns {UnsafeCacheData} cached data
*/
getUnsafeCacheData() {
const data =
/** @type {NormalModuleUnsafeCacheData} */
(super.getUnsafeCacheData());
data.parserOptions = this.parserOptions;
data.generatorOptions = this.generatorOptions;
return data;
}
/**
* restore unsafe cache data
* @param {NormalModuleUnsafeCacheData} unsafeCacheData data from getUnsafeCacheData
* @param {NormalModuleFactory} normalModuleFactory the normal module factory handling the unsafe caching
*/
restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory) {
this._restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory);
}
/**
* restore unsafe cache data
* @param {object} unsafeCacheData data from getUnsafeCacheData
* @param {NormalModuleFactory} normalModuleFactory the normal module factory handling the unsafe caching
*/
_restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory) {
super._restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory);
this.parserOptions = unsafeCacheData.parserOptions;
this.parser = normalModuleFactory.getParser(this.type, this.parserOptions);
this.generatorOptions = unsafeCacheData.generatorOptions;
this.generator = normalModuleFactory.getGenerator(
this.type,
this.generatorOptions
);
// we assume the generator behaves identically and keep cached sourceTypes/Sizes
}
/**
* @param {string} context the compilation context
* @param {string} name the asset name
* @param {string | Buffer} content the content
* @param {(string | SourceMap)=} sourceMap an optional source map
* @param {object=} associatedObjectForCache object for caching
* @returns {Source} the created source
*/
createSourceForAsset(
context,
name,
content,
sourceMap,
associatedObjectForCache
) {
if (sourceMap) {
if (
typeof sourceMap === "string" &&
(this.useSourceMap || this.useSimpleSourceMap)
) {
return new OriginalSource(
content,
contextifySourceUrl(context, sourceMap, associatedObjectForCache)
);
}
if (this.useSourceMap) {
return new SourceMapSource(
content,
name,
contextifySourceMap(
context,
/** @type {SourceMap} */ (sourceMap),
associatedObjectForCache
)
);
}
}
return new RawSource(content);
}
/**
* @private
* @template T
* @param {ResolverWithOptions} resolver a resolver
* @param {WebpackOptions} options webpack options
* @param {Compilation} compilation the compilation
* @param {InputFileSystem} fs file system from reading
* @param {NormalModuleCompilationHooks} hooks the hooks
* @returns {import("../declarations/LoaderContext").NormalModuleLoaderContext<T>} loader context
*/
_createLoaderContext(resolver, options, compilation, fs, hooks) {
const { requestShortener } = compilation.runtimeTemplate;
const getCurrentLoaderName = () => {
const currentLoader = this.getCurrentLoader(loaderContext);
if (!currentLoader) return "(not in loader scope)";
return requestShortener.shorten(currentLoader.loader);
};
/**
* @returns {ResolveContext} resolve context
*/
const getResolveContext = () => ({
fileDependencies: {
add: d => /** @type {TODO} */ (loaderContext).addDependency(d)
},
contextDependencies: {
add: d => /** @type {TODO} */ (loaderContext).addContextDependency(d)
},
missingDependencies: {
add: d => /** @type {TODO} */ (loaderContext).addMissingDependency(d)
}
});
const getAbsolutify = memoize(() =>
absolutify.bindCache(compilation.compiler.root)
);
const getAbsolutifyInContext = memoize(() =>
absolutify.bindContextCache(
/** @type {string} */
(this.context),
compilation.compiler.root
)
);
const getContextify = memoize(() =>
contextify.bindCache(compilation.compiler.root)
);
const getContextifyInContext = memoize(() =>
contextify.bindContextCache(
/** @type {string} */
(this.context),
compilation.compiler.root
)
);
const utils = {
/**
* @param {string} context context
* @param {string} request request
* @returns {string} result
*/
absolutify: (context, request) =>
context === this.context
? getAbsolutifyInContext()(request)
: getAbsolutify()(context, request),
/**
* @param {string} context context
* @param {string} request request
* @returns {string} result
*/
contextify: (context, request) =>
context === this.context
? getContextifyInContext()(request)
: getContextify()(context, request),
/**
* @param {(string | typeof import("./util/Hash"))=} type type
* @returns {Hash} hash
*/
createHash: type =>
createHash(
type ||
/** @type {Algorithm} */
(compilation.outputOptions.hashFunction)
)
};
/** @type {import("../declarations/LoaderContext").NormalModuleLoaderContext<T>} */
const loaderContext = {
version: 2,
getOptions: schema => {
const loader = this.getCurrentLoader(loaderContext);
let { options } = /** @type {LoaderItem} */ (loader);
if (typeof options === "string") {
if (options.startsWith("{") && options.endsWith("}")) {
try {
options = parseJson(options);
} catch (err) {
throw new Error(
`Cannot parse string options: ${/** @type {Error} */ (err).message}`
);
}
} else {
options = querystring.parse(options, "&", "=", {
maxKeys: 0
});
}
}
if (options === null || options === undefined) {
options = {};
}
if (schema) {
let name = "Loader";
let baseDataPath = "options";
let match;
if (schema.title && (match = /^(.+) (.+)$/.exec(schema.title))) {
[, name, baseDataPath] = match;
}
getValidate()(schema, options, {
name,
baseDataPath
});
}
return options;
},
emitWarning: warning => {
if (!(warning instanceof Error)) {
warning = new NonErrorEmittedError(warning);
}
this.addWarning(
new ModuleWarning(warning, {
from: getCurrentLoaderName()
})
);
},
emitError: error => {
if (!(error instanceof Error)) {
error = new NonErrorEmittedError(error);
}
this.addError(
new ModuleError(error, {
from: getCurrentLoaderName()
})
);
},
getLogger: name => {
const currentLoader = this.getCurrentLoader(loaderContext);
return compilation.getLogger(() =>
[currentLoader && currentLoader.loader, name, this.identifier()]
.filter(Boolean)
.join("|")
);
},
resolve(context, request, callback) {
resolver.resolve({}, context, request, getResolveContext(), callback);
},
getResolve(options) {
const child = options ? resolver.withOptions(options) : resolver;
return (context, request, callback) => {
if (callback) {
child.resolve({}, context, request, getResolveContext(), callback);
} else {
return new Promise((resolve, reject) => {
child.resolve(
{},
context,
request,
getResolveContext(),
(err, result) => {
if (err) reject(err);
else resolve(result);
}
);
});
}
};
},
emitFile: (name, content, sourceMap, assetInfo) => {
const buildInfo = /** @type {BuildInfo} */ (this.buildInfo);
if (!buildInfo.assets) {
buildInfo.assets = Object.create(null);
buildInfo.assetsInfo = new Map();
}
const assets =
/** @type {NonNullable<KnownBuildInfo["assets"]>} */
(buildInfo.assets);
const assetsInfo =
/** @type {NonNullable<KnownBuildInfo["assetsInfo"]>} */
(buildInfo.assetsInfo);
assets[name] = this.createSourceForAsset(
/** @type {string} */ (options.context),
name,
content,
sourceMap,
compilation.compiler.root
);
assetsInfo.set(name, assetInfo);
},
addBuildDependency: dep => {
const buildInfo = /** @type {BuildInfo} */ (this.buildInfo);
if (buildInfo.buildDependencies === undefined) {
buildInfo.buildDependencies = new LazySet();
}
buildInfo.buildDependencies.add(dep);
},
utils,
rootContext: /** @type {string} */ (options.context),
webpack: true,
sourceMap: Boolean(this.useSourceMap),
mode: options.mode || "production",
hashFunction: /** @type {TODO} */ (options.output.hashFunction),
hashDigest: /** @type {string} */ (options.output.hashDigest),
hashDigestLength: /** @type {number} */ (options.output.hashDigestLength),
hashSalt: /** @type {string} */ (options.output.hashSalt),
_module: this,
_compilation: compilation,
_compiler: compilation.compiler,
fs
};
Object.assign(loaderContext, options.loader);
hooks.loader.call(/** @type {LoaderContext<any>} */ (loaderContext), this);
return loaderContext;
}
// TODO remove `loaderContext` in webpack@6
/**
* @param {TODO} loaderContext loader context
* @param {number} index index
* @returns {LoaderItem | null} loader
*/
getCurrentLoader(loaderContext, index = loaderContext.loaderIndex) {
if (
this.loaders &&
this.loaders.length &&
index < this.loaders.length &&
index >= 0 &&
this.loaders[index]
) {
return this.loaders[index];
}
return null;
}
/**
* @param {string} context the compilation context
* @param {string | Buffer} content the content
* @param {(string | SourceMapSource | null)=} sourceMap an optional source map
* @param {object=} associatedObjectForCache object for caching
* @returns {Source} the created source
*/
createSource(context, content, sourceMap, associatedObjectForCache) {
if (Buffer.isBuffer(content)) {
return new RawSource(content);
}
// if there is no identifier return raw source
if (!this.identifier) {
return new RawSource(content);
}
// from here on we assume we have an identifier
const identifier = this.identifier();
if (this.useSourceMap && sourceMap) {
return new SourceMapSource(
content,
contextifySourceUrl(context, identifier, associatedObjectForCache),
contextifySourceMap(
context,
/** @type {TODO} */ (sourceMap),
associatedObjectForCache
)
);
}
if (this.useSourceMap || this.useSimpleSourceMap) {
return new OriginalSource(
content,
contextifySourceUrl(context, identifier, associatedObjectForCache)
);
}
return new RawSource(content);
}
/**
* @param {WebpackOptions} options webpack options
* @param {Compilation} compilation the compilation
* @param {ResolverWithOptions} resolver the resolver
* @param {InputFileSystem} fs the file system
* @param {NormalModuleCompilationHooks} hooks the hooks
* @param {function((WebpackError | null)=): void} callback callback function
* @returns {void}
*/
_doBuild(options, compilation, resolver, fs, hooks, callback) {
const loaderContext = this._createLoaderContext(
resolver,
options,
compilation,
fs,
hooks
);
/** @typedef {[string | Buffer, string | SourceMapSource, Record<string, any>]} Result */
/**
* @param {Error | null} err err
* @param {(Result | null)=} _result result
* @returns {void}
*/
const processResult = (err, _result) => {
if (err) {
if (!(err instanceof Error)) {
err = new NonErrorEmittedError(err);
}
const currentLoader = this.getCurrentLoader(loaderContext);
const error = new ModuleBuildError(err, {
from:
currentLoader &&
compilation.runtimeTemplate.requestShortener.shorten(
currentLoader.loader
)
});
return callback(error);
}
const result = /** @type {Result} */ (_result);
const source = result[0];
const sourceMap = result.length >= 1 ? result[1] : null;
const extraInfo = result.length >= 2 ? result[2] : null;
if (!Buffer.isBuffer(source) && typeof source !== "string") {
const currentLoader = this.getCurrentLoader(loaderContext, 0);
const err = new Error(
`Final loader (${
currentLoader
? compilation.runtimeTemplate.requestShortener.shorten(
currentLoader.loader
)
: "unknown"
}) didn't return a Buffer or String`
);
const error = new ModuleBuildError(err);
return callback(error);
}
const isBinaryModule =
this.generatorOptions && this.generatorOptions.binary !== undefined
? this.generatorOptions.binary
: this.binary;
this._source = this.createSource(
/** @type {string} */ (options.context),
isBinaryModule ? asBuffer(source) : asString(source),
sourceMap,
compilation.compiler.root
);
if (this._sourceSizes !== undefined) this._sourceSizes.clear();
this._ast =
typeof extraInfo === "object" &&
extraInfo !== null &&
extraInfo.webpackAST !== undefined
? extraInfo.webpackAST
: null;
return callback();
};
const buildInfo = /** @type {BuildInfo} */ (this.buildInfo);
buildInfo.fileDependencies = new LazySet();
buildInfo.contextDependencies = new LazySet();
buildInfo.missingDependencies = new LazySet();
buildInfo.cacheable = true;
try {
hooks.beforeLoaders.call(
this.loaders,
this,
/** @type {LoaderContext<any>} */ (loaderContext)
);
} catch (err) {
processResult(/** @type {Error} */ (err));
return;
}
if (this.loaders.length > 0) {
/** @type {BuildInfo} */
(this.buildInfo).buildDependencies = new LazySet();
}
runLoaders(
{
resource: this.resource,
loaders: this.loaders,
context: loaderContext,
/**
* @param {LoaderContext<TODO>} loaderContext the loader context
* @param {string} resourcePath the resource Path
* @param {(err: Error | null, result?: string | Buffer) => void} callback callback
*/
processResource: (loaderContext, resourcePath, callback) => {
const resource = loaderContext.resource;
const scheme = getScheme(resource);
hooks.readResource
.for(scheme)
.callAsync(loaderContext, (err, result) => {
if (err) return callback(err);
if (typeof result !== "string" && !result) {
return callback(
new UnhandledSchemeError(
/** @type {string} */
(scheme),
resource
)
);
}
return callback(null, result);
});
}
},
(err, result) => {
// Cleanup loaderContext to avoid leaking memory in ICs
loaderContext._compilation =
loaderContext._compiler =
loaderContext._module =
// eslint-disable-next-line no-warning-comments
// @ts-ignore
loaderContext.fs =