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NormalModuleFactory.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const asyncLib = require("neo-async");
const {
AsyncSeriesBailHook,
SyncWaterfallHook,
SyncBailHook,
SyncHook,
HookMap
} = require("tapable");
const Module = require("./Module");
const ModuleFactory = require("./ModuleFactory");
const NormalModule = require("./NormalModule");
const RawModule = require("./RawModule");
const BasicEffectRulePlugin = require("./rules/BasicEffectRulePlugin");
const BasicMatcherRulePlugin = require("./rules/BasicMatcherRulePlugin");
const DescriptionDataMatcherRulePlugin = require("./rules/DescriptionDataMatcherRulePlugin");
const RuleSetCompiler = require("./rules/RuleSetCompiler");
const UseEffectRulePlugin = require("./rules/UseEffectRulePlugin");
const LazySet = require("./util/LazySet");
const { getScheme } = require("./util/URLAbsoluteSpecifier");
const { cachedCleverMerge, cachedSetProperty } = require("./util/cleverMerge");
const { join } = require("./util/fs");
const { parseResource } = require("./util/identifier");
/** @typedef {import("../declarations/WebpackOptions").ModuleOptions} ModuleOptions */
/** @typedef {import("./Generator")} Generator */
/** @typedef {import("./ModuleFactory").ModuleFactoryCreateData} ModuleFactoryCreateData */
/** @typedef {import("./ModuleFactory").ModuleFactoryResult} ModuleFactoryResult */
/** @typedef {import("./Parser")} Parser */
/** @typedef {import("./ResolverFactory")} ResolverFactory */
/** @typedef {import("./dependencies/ModuleDependency")} ModuleDependency */
/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
/**
* @typedef {Object} ResolveData
* @property {ModuleFactoryCreateData["contextInfo"]} contextInfo
* @property {ModuleFactoryCreateData["resolveOptions"]} resolveOptions
* @property {string} context
* @property {string} request
* @property {ModuleDependency[]} dependencies
* @property {Object} createData
* @property {LazySet<string>} fileDependencies
* @property {LazySet<string>} missingDependencies
* @property {LazySet<string>} contextDependencies
* @property {boolean} cacheable allow to use the unsafe cache
*/
/**
* @typedef {Object} ResourceData
* @property {string} resource
* @property {string} path
* @property {string} query
* @property {string} fragment
*/
/** @typedef {ResourceData & { data: Record<string, any> }} ResourceDataWithData */
const EMPTY_RESOLVE_OPTIONS = {};
const MATCH_RESOURCE_REGEX = /^([^!]+)!=!/;
const loaderToIdent = data => {
if (!data.options) {
return data.loader;
}
if (typeof data.options === "string") {
return data.loader + "?" + data.options;
}
if (typeof data.options !== "object") {
throw new Error("loader options must be string or object");
}
if (data.ident) {
return data.loader + "??" + data.ident;
}
return data.loader + "?" + JSON.stringify(data.options);
};
const stringifyLoadersAndResource = (loaders, resource) => {
let str = "";
for (const loader of loaders) {
str += loaderToIdent(loader) + "!";
}
return str + resource;
};
/**
* @param {string} resultString resultString
* @returns {{loader: string, options: string|undefined}} parsed loader request
*/
const identToLoaderRequest = resultString => {
const idx = resultString.indexOf("?");
if (idx >= 0) {
const loader = resultString.substr(0, idx);
const options = resultString.substr(idx + 1);
return {
loader,
options
};
} else {
return {
loader: resultString,
options: undefined
};
}
};
const needCalls = (times, callback) => {
return err => {
if (--times === 0) {
return callback(err);
}
if (err && times > 0) {
times = NaN;
return callback(err);
}
};
};
// TODO webpack 6 remove
const deprecationChangedHookMessage = name =>
`NormalModuleFactory.${name} is no longer a waterfall hook, but a bailing hook instead. ` +
"Do not return the passed object, but modify it instead. " +
"Returning false will ignore the request and results in no module created.";
const dependencyCache = new WeakMap();
const ruleSetCompiler = new RuleSetCompiler([
new BasicMatcherRulePlugin("test", "resource"),
new BasicMatcherRulePlugin("mimetype"),
new BasicMatcherRulePlugin("dependency"),
new BasicMatcherRulePlugin("include", "resource"),
new BasicMatcherRulePlugin("exclude", "resource", true),
new BasicMatcherRulePlugin("resource"),
new BasicMatcherRulePlugin("resourceQuery"),
new BasicMatcherRulePlugin("resourceFragment"),
new BasicMatcherRulePlugin("realResource"),
new BasicMatcherRulePlugin("issuer"),
new BasicMatcherRulePlugin("compiler"),
new DescriptionDataMatcherRulePlugin(),
new BasicEffectRulePlugin("type"),
new BasicEffectRulePlugin("sideEffects"),
new BasicEffectRulePlugin("parser"),
new BasicEffectRulePlugin("resolve"),
new BasicEffectRulePlugin("generator"),
new UseEffectRulePlugin()
]);
class NormalModuleFactory extends ModuleFactory {
/**
* @param {Object} param params
* @param {string=} param.context context
* @param {InputFileSystem} param.fs file system
* @param {ResolverFactory} param.resolverFactory resolverFactory
* @param {ModuleOptions} param.options options
* @param {Object=} param.associatedObjectForCache an object to which the cache will be attached
*/
constructor({
context,
fs,
resolverFactory,
options,
associatedObjectForCache
}) {
super();
this.hooks = Object.freeze({
/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
resolve: new AsyncSeriesBailHook(["resolveData"]),
/** @type {HookMap<AsyncSeriesBailHook<[ResourceDataWithData, ResolveData], true | void>>} */
resolveForScheme: new HookMap(
() => new AsyncSeriesBailHook(["resourceData", "resolveData"])
),
/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
factorize: new AsyncSeriesBailHook(["resolveData"]),
/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
beforeResolve: new AsyncSeriesBailHook(["resolveData"]),
/** @type {AsyncSeriesBailHook<[ResolveData], TODO>} */
afterResolve: new AsyncSeriesBailHook(["resolveData"]),
/** @type {AsyncSeriesBailHook<[ResolveData["createData"], ResolveData], TODO>} */
createModule: new AsyncSeriesBailHook(["createData", "resolveData"]),
/** @type {SyncWaterfallHook<[Module, ResolveData["createData"], ResolveData], TODO>} */
module: new SyncWaterfallHook(["module", "createData", "resolveData"]),
createParser: new HookMap(() => new SyncBailHook(["parserOptions"])),
parser: new HookMap(() => new SyncHook(["parser", "parserOptions"])),
createGenerator: new HookMap(
() => new SyncBailHook(["generatorOptions"])
),
generator: new HookMap(
() => new SyncHook(["generator", "generatorOptions"])
)
});
this.resolverFactory = resolverFactory;
this.ruleSet = ruleSetCompiler.compile([
{
rules: options.defaultRules
},
{
rules: options.rules
}
]);
this.unsafeCache = !!options.unsafeCache;
this.cachePredicate =
typeof options.unsafeCache === "function"
? options.unsafeCache
: () => true;
this.context = context || "";
this.fs = fs;
/**
* @type {Map<string, WeakMap<Object, TODO>>}
*/
this.parserCache = new Map();
/**
* @type {Map<string, WeakMap<Object, Generator>>}
*/
this.generatorCache = new Map();
const cacheParseResource = parseResource.bindCache(
associatedObjectForCache
);
this.hooks.factorize.tapAsync(
{
name: "NormalModuleFactory",
stage: 100
},
(resolveData, callback) => {
this.hooks.resolve.callAsync(resolveData, (err, result) => {
if (err) return callback(err);
// Ignored
if (result === false) return callback();
// direct module
if (result instanceof Module) return callback(null, result);
if (typeof result === "object")
throw new Error(
deprecationChangedHookMessage("resolve") +
" Returning a Module object will result in this module used as result."
);
this.hooks.afterResolve.callAsync(resolveData, (err, result) => {
if (err) return callback(err);
if (typeof result === "object")
throw new Error(deprecationChangedHookMessage("afterResolve"));
// Ignored
if (result === false) return callback();
const createData = resolveData.createData;
this.hooks.createModule.callAsync(
createData,
resolveData,
(err, createdModule) => {
if (!createdModule) {
if (!resolveData.request) {
return callback(new Error("Empty dependency (no request)"));
}
createdModule = new NormalModule(createData);
}
createdModule = this.hooks.module.call(
createdModule,
createData,
resolveData
);
return callback(null, createdModule);
}
);
});
});
}
);
this.hooks.resolve.tapAsync(
{
name: "NormalModuleFactory",
stage: 100
},
(data, callback) => {
const {
contextInfo,
context,
dependencies,
request,
resolveOptions,
fileDependencies,
missingDependencies,
contextDependencies
} = data;
const dependencyType =
(dependencies.length > 0 && dependencies[0].category) || "";
const loaderResolver = this.getResolver("loader");
/** @type {ResourceData | undefined} */
let matchResourceData = undefined;
/** @type {string} */
let requestWithoutMatchResource = request;
const matchResourceMatch = MATCH_RESOURCE_REGEX.exec(request);
if (matchResourceMatch) {
let matchResource = matchResourceMatch[1];
if (matchResource.charCodeAt(0) === 46) {
// 46 === ".", 47 === "/"
const secondChar = matchResource.charCodeAt(1);
if (
secondChar === 47 ||
(secondChar === 46 && matchResource.charCodeAt(2) === 47)
) {
// if matchResources startsWith ../ or ./
matchResource = join(this.fs, context, matchResource);
}
}
matchResourceData = {
resource: matchResource,
...cacheParseResource(matchResource)
};
requestWithoutMatchResource = request.substr(
matchResourceMatch[0].length
);
}
const firstChar = requestWithoutMatchResource.charCodeAt(0);
const secondChar = requestWithoutMatchResource.charCodeAt(1);
const noPreAutoLoaders = firstChar === 45 && secondChar === 33; // startsWith "-!"
const noAutoLoaders = noPreAutoLoaders || firstChar === 33; // startsWith "!"
const noPrePostAutoLoaders = firstChar === 33 && secondChar === 33; // startsWith "!!";
const rawElements = requestWithoutMatchResource
.slice(
noPreAutoLoaders || noPrePostAutoLoaders ? 2 : noAutoLoaders ? 1 : 0
)
.split(/!+/);
const unresolvedResource = rawElements.pop();
const elements = rawElements.map(identToLoaderRequest);
const resolveContext = {
fileDependencies,
missingDependencies,
contextDependencies
};
/** @type {ResourceDataWithData} */
let resourceData;
/** @type {string | undefined} */
const scheme = getScheme(unresolvedResource);
let loaders;
const continueCallback = needCalls(2, err => {
if (err) return callback(err);
// translate option idents
try {
for (const item of loaders) {
if (typeof item.options === "string" && item.options[0] === "?") {
const ident = item.options.substr(1);
if (ident === "[[missing ident]]") {
throw new Error(
"No ident is provided by referenced loader. " +
"When using a function for Rule.use in config you need to " +
"provide an 'ident' property for referenced loader options."
);
}
item.options = this.ruleSet.references.get(ident);
if (item.options === undefined) {
throw new Error(
"Invalid ident is provided by referenced loader"
);
}
item.ident = ident;
}
}
} catch (e) {
return callback(e);
}
if (!resourceData) {
// ignored
return callback(
null,
new RawModule(
"/* (ignored) */",
`ignored|${request}`,
`${request} (ignored)`
)
);
}
const userRequest =
(matchResourceData !== undefined
? `${matchResourceData.resource}!=!`
: "") +
stringifyLoadersAndResource(loaders, resourceData.resource);
const resourceDataForRules = matchResourceData || resourceData;
const result = this.ruleSet.exec({
resource: resourceDataForRules.path,
realResource: resourceData.path,
resourceQuery: resourceDataForRules.query,
resourceFragment: resourceDataForRules.fragment,
mimetype: matchResourceData ? "" : resourceData.data.mimetype || "",
dependency: dependencyType,
descriptionData: matchResourceData
? undefined
: resourceData.data.descriptionFileData,
issuer: contextInfo.issuer,
compiler: contextInfo.compiler
});
const settings = {};
const useLoadersPost = [];
const useLoaders = [];
const useLoadersPre = [];
for (const r of result) {
if (r.type === "use") {
if (!noAutoLoaders && !noPrePostAutoLoaders) {
useLoaders.push(r.value);
}
} else if (r.type === "use-post") {
if (!noPrePostAutoLoaders) {
useLoadersPost.push(r.value);
}
} else if (r.type === "use-pre") {
if (!noPreAutoLoaders && !noPrePostAutoLoaders) {
useLoadersPre.push(r.value);
}
} else if (
typeof r.value === "object" &&
r.value !== null &&
typeof settings[r.type] === "object" &&
settings[r.type] !== null
) {
settings[r.type] = cachedCleverMerge(settings[r.type], r.value);
} else {
settings[r.type] = r.value;
}
}
let postLoaders, normalLoaders, preLoaders;
const continueCallback = needCalls(3, err => {
if (err) {
return callback(err);
}
const allLoaders = postLoaders;
if (matchResourceData === undefined) {
for (const loader of loaders) allLoaders.push(loader);
for (const loader of normalLoaders) allLoaders.push(loader);
} else {
for (const loader of normalLoaders) allLoaders.push(loader);
for (const loader of loaders) allLoaders.push(loader);
}
for (const loader of preLoaders) allLoaders.push(loader);
const type = settings.type;
const resolveOptions = settings.resolve;
Object.assign(data.createData, {
request: stringifyLoadersAndResource(
allLoaders,
resourceData.resource
),
userRequest,
rawRequest: request,
loaders: allLoaders,
resource: resourceData.resource,
matchResource: matchResourceData
? matchResourceData.resource
: undefined,
resourceResolveData: resourceData.data,
settings,
type,
parser: this.getParser(type, settings.parser),
generator: this.getGenerator(type, settings.generator),
resolveOptions
});
callback();
});
this.resolveRequestArray(
contextInfo,
this.context,
useLoadersPost,
loaderResolver,
resolveContext,
(err, result) => {
postLoaders = result;
continueCallback(err);
}
);
this.resolveRequestArray(
contextInfo,
this.context,
useLoaders,
loaderResolver,
resolveContext,
(err, result) => {
normalLoaders = result;
continueCallback(err);
}
);
this.resolveRequestArray(
contextInfo,
this.context,
useLoadersPre,
loaderResolver,
resolveContext,
(err, result) => {
preLoaders = result;
continueCallback(err);
}
);
});
this.resolveRequestArray(
contextInfo,
context,
elements,
loaderResolver,
resolveContext,
(err, result) => {
if (err) return continueCallback(err);
loaders = result;
continueCallback();
}
);
// resource with scheme
if (scheme) {
resourceData = {
resource: unresolvedResource,
data: {},
path: undefined,
query: undefined,
fragment: undefined
};
this.hooks.resolveForScheme
.for(scheme)
.callAsync(resourceData, data, err => {
if (err) return continueCallback(err);
continueCallback();
});
}
// resource without scheme and without path
else if (/^($|\?|#)/.test(unresolvedResource)) {
resourceData = {
resource: unresolvedResource,
data: {},
...cacheParseResource(unresolvedResource)
};
continueCallback();
}
// resource without scheme and with path
else {
const normalResolver = this.getResolver(
"normal",
dependencyType
? cachedSetProperty(
resolveOptions || EMPTY_RESOLVE_OPTIONS,
"dependencyType",
dependencyType
)
: resolveOptions
);
this.resolveResource(
contextInfo,
context,
unresolvedResource,
normalResolver,
resolveContext,
(err, resolvedResource, resolvedResourceResolveData) => {
if (err) return continueCallback(err);
if (resolvedResource !== false) {
resourceData = {
resource: resolvedResource,
data: resolvedResourceResolveData,
...cacheParseResource(resolvedResource)
};
}
continueCallback();
}
);
}
}
);
}
/**
* @param {ModuleFactoryCreateData} data data object
* @param {function(Error=, ModuleFactoryResult=): void} callback callback
* @returns {void}
*/
create(data, callback) {
const dependencies = /** @type {ModuleDependency[]} */ (data.dependencies);
if (this.unsafeCache) {
const cacheEntry = dependencyCache.get(dependencies[0]);
if (cacheEntry) return callback(null, cacheEntry);
}
const context = data.context || this.context;
const resolveOptions = data.resolveOptions || EMPTY_RESOLVE_OPTIONS;
const dependency = dependencies[0];
const request = dependency.request;
const contextInfo = data.contextInfo;
const fileDependencies = new LazySet();
const missingDependencies = new LazySet();
const contextDependencies = new LazySet();
/** @type {ResolveData} */
const resolveData = {
contextInfo,
resolveOptions,
context,
request,
dependencies,
fileDependencies,
missingDependencies,
contextDependencies,
createData: {},
cacheable: true
};
this.hooks.beforeResolve.callAsync(resolveData, (err, result) => {
if (err) {
return callback(err, {
fileDependencies,
missingDependencies,
contextDependencies
});
}
// Ignored
if (result === false) {
return callback(null, {
fileDependencies,
missingDependencies,
contextDependencies
});
}
if (typeof result === "object")
throw new Error(deprecationChangedHookMessage("beforeResolve"));
this.hooks.factorize.callAsync(resolveData, (err, module) => {
if (err) {
return callback(err, {
fileDependencies,
missingDependencies,
contextDependencies
});
}
const factoryResult = {
module,
fileDependencies,
missingDependencies,
contextDependencies
};
if (
this.unsafeCache &&
resolveData.cacheable &&
module &&
this.cachePredicate(module)
) {
for (const d of dependencies) {
dependencyCache.set(d, factoryResult);
}
}
callback(null, factoryResult);
});
});
}
resolveResource(
contextInfo,
context,
unresolvedResource,
resolver,
resolveContext,
callback
) {
resolver.resolve(
contextInfo,
context,
unresolvedResource,
resolveContext,
(err, resolvedResource, resolvedResourceResolveData) => {
if (err) {
if (resolver.options.fullySpecified) {
resolver
.withOptions({
fullySpecified: false
})
.resolve(
contextInfo,
context,
unresolvedResource,
resolveContext,
(err2, resolvedResource) => {
if (!err2 && resolvedResource) {
const resource = parseResource(
resolvedResource
).path.replace(/^.*[\\/]/, "");
err.message += `
Did you mean '${resource}'?
BREAKING CHANGE: The request '${unresolvedResource}' failed to resolve only because it was resolved as fully specified
(probably because the origin is a '*.mjs' file or a '*.js' file where the package.json contains '"type": "module"').
The extension in the request is mandatory for it to be fully specified.
Add the extension to the request.`;
}
callback(err);
}
);
return;
}
}
callback(err, resolvedResource, resolvedResourceResolveData);
}
);
}
resolveRequestArray(
contextInfo,
context,
array,
resolver,
resolveContext,
callback
) {
if (array.length === 0) return callback(null, array);
asyncLib.map(
array,
(item, callback) => {
resolver.resolve(
contextInfo,
context,
item.loader,
resolveContext,
(err, result) => {
if (
err &&
/^[^/]*$/.test(item.loader) &&
!/-loader$/.test(item.loader)
) {
return resolver.resolve(
contextInfo,
context,
item.loader + "-loader",
resolveContext,
err2 => {
if (!err2) {
err.message =
err.message +
"\n" +
"BREAKING CHANGE: It's no longer allowed to omit the '-loader' suffix when using loaders.\n" +
` You need to specify '${item.loader}-loader' instead of '${item.loader}',\n` +
" see https://webpack.js.org/migrate/3/#automatic-loader-module-name-extension-removed";
}
callback(err);
}
);
}
if (err) return callback(err);
const parsedResult = identToLoaderRequest(result);
const resolved = {
loader: parsedResult.loader,
options:
item.options === undefined
? parsedResult.options
: item.options,
ident: item.options === undefined ? undefined : item.ident
};
return callback(null, resolved);
}
);
},
callback
);
}
getParser(type, parserOptions = EMPTY_RESOLVE_OPTIONS) {
let cache = this.parserCache.get(type);
if (cache === undefined) {
cache = new WeakMap();
this.parserCache.set(type, cache);
}
let parser = cache.get(parserOptions);
if (parser === undefined) {
parser = this.createParser(type, parserOptions);
cache.set(parserOptions, parser);
}
return parser;
}
/**
* @param {string} type type
* @param {{[k: string]: any}} parserOptions parser options
* @returns {Parser} parser
*/
createParser(type, parserOptions = {}) {
const parser = this.hooks.createParser.for(type).call(parserOptions);
if (!parser) {
throw new Error(`No parser registered for ${type}`);
}
this.hooks.parser.for(type).call(parser, parserOptions);
return parser;
}
getGenerator(type, generatorOptions = EMPTY_RESOLVE_OPTIONS) {
let cache = this.generatorCache.get(type);
if (cache === undefined) {
cache = new WeakMap();
this.generatorCache.set(type, cache);
}
let generator = cache.get(generatorOptions);
if (generator === undefined) {
generator = this.createGenerator(type, generatorOptions);
cache.set(generatorOptions, generator);
}
return generator;
}
createGenerator(type, generatorOptions = {}) {
const generator = this.hooks.createGenerator
.for(type)
.call(generatorOptions);
if (!generator) {
throw new Error(`No generator registered for ${type}`);
}
this.hooks.generator.for(type).call(generator, generatorOptions);
return generator;
}
getResolver(type, resolveOptions) {
return this.resolverFactory.get(type, resolveOptions);
}
}
module.exports = NormalModuleFactory;
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