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index.js
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/* eslint-disable class-methods-use-this */
const path = require("path");
const { validate } = require("schema-utils");
const schema = require("./plugin-options.json");
const {
trueFn,
MODULE_TYPE,
AUTO_PUBLIC_PATH,
ABSOLUTE_PUBLIC_PATH,
SINGLE_DOT_PATH_SEGMENT,
compareModulesByIdentifier,
getUndoPath,
BASE_URI,
} = require("./utils");
const { getCompilationHooks } = require("./hooks");
/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
/** @typedef {import("webpack").Compiler} Compiler */
/** @typedef {import("webpack").Compilation} Compilation */
/** @typedef {import("webpack").ChunkGraph} ChunkGraph */
/** @typedef {import("webpack").Chunk} Chunk */
/** @typedef {Parameters<import("webpack").Chunk["isInGroup"]>[0]} ChunkGroup */
/** @typedef {import("webpack").Module} Module */
/** @typedef {import("webpack").Dependency} Dependency */
/** @typedef {import("webpack").sources.Source} Source */
/** @typedef {import("webpack").Configuration} Configuration */
/** @typedef {import("webpack").WebpackError} WebpackError */
/** @typedef {import("webpack").AssetInfo} AssetInfo */
/** @typedef {import("./loader.js").Dependency} LoaderDependency */
/**
* @typedef {Object} LoaderOptions
* @property {string | ((resourcePath: string, rootContext: string) => string)} [publicPath]
* @property {boolean} [emit]
* @property {boolean} [esModule]
* @property {string} [layer]
*/
/**
* @typedef {Object} PluginOptions
* @property {Required<Configuration>['output']['filename']} [filename]
* @property {Required<Configuration>['output']['chunkFilename']} [chunkFilename]
* @property {boolean} [ignoreOrder]
* @property {string | ((linkTag: HTMLLinkElement) => void)} [insert]
* @property {Record<string, string>} [attributes]
* @property {string | false | 'text/css'} [linkType]
* @property {boolean} [runtime]
* @property {boolean} [experimentalUseImportModule]
*/
/**
* @typedef {Object} NormalizedPluginOptions
* @property {Required<Configuration>['output']['filename']} filename
* @property {Required<Configuration>['output']['chunkFilename']} [chunkFilename]
* @property {boolean} ignoreOrder
* @property {string | ((linkTag: HTMLLinkElement) => void)} [insert]
* @property {Record<string, string>} [attributes]
* @property {string | false | 'text/css'} [linkType]
* @property {boolean} runtime
* @property {boolean} [experimentalUseImportModule]
*/
/**
* @typedef {Object} RuntimeOptions
* @property {string | ((linkTag: HTMLLinkElement) => void) | undefined} insert
* @property {string | false | 'text/css'} linkType
* @property {Record<string, string> | undefined} attributes
*/
/** @typedef {any} TODO */
const pluginName = "mini-css-extract-plugin";
const pluginSymbol = Symbol(pluginName);
const DEFAULT_FILENAME = "[name].css";
/**
* @type {Set<string>}
*/
const TYPES = new Set([MODULE_TYPE]);
/**
* @type {ReturnType<Module["codeGeneration"]>}
*/
const CODE_GENERATION_RESULT = {
sources: new Map(),
runtimeRequirements: new Set(),
};
/** @typedef {Module & { content: Buffer, media?: string, sourceMap?: Buffer, supports?: string, layer?: string, assets?: { [key: string]: TODO }, assetsInfo?: Map<string, AssetInfo> }} CssModule */
/** @typedef {{ context: string | null, identifier: string, identifierIndex: number, content: Buffer, sourceMap?: Buffer, media?: string, supports?: string, layer?: TODO, assetsInfo?: Map<string, AssetInfo>, assets?: { [key: string]: TODO }}} CssModuleDependency */
/** @typedef {{ new(dependency: CssModuleDependency): CssModule }} CssModuleConstructor */
/** @typedef {Dependency & CssModuleDependency} CssDependency */
/** @typedef {Omit<LoaderDependency, "context">} CssDependencyOptions */
/** @typedef {{ new(loaderDependency: CssDependencyOptions, context: string | null, identifierIndex: number): CssDependency }} CssDependencyConstructor */
/**
*
* @type {WeakMap<Compiler["webpack"], CssModuleConstructor>}
*/
const cssModuleCache = new WeakMap();
/**
* @type {WeakMap<Compiler["webpack"], CssDependencyConstructor>}
*/
const cssDependencyCache = new WeakMap();
/**
* @type {WeakSet<Compiler["webpack"]>}
*/
const registered = new WeakSet();
class MiniCssExtractPlugin {
/**
* @param {Compiler["webpack"]} webpack
* @returns {CssModuleConstructor}
*/
static getCssModule(webpack) {
/**
* Prevent creation of multiple CssModule classes to allow other integrations to get the current CssModule.
*/
if (cssModuleCache.has(webpack)) {
return /** @type {CssModuleConstructor} */ (cssModuleCache.get(webpack));
}
class CssModule extends webpack.Module {
/**
* @param {CssModuleDependency} dependency
*/
constructor({
context,
identifier,
identifierIndex,
content,
layer,
supports,
media,
sourceMap,
assets,
assetsInfo,
}) {
// @ts-ignore
super(MODULE_TYPE, /** @type {string | undefined} */ (context));
this.id = "";
this._context = context;
this._identifier = identifier;
this._identifierIndex = identifierIndex;
this.content = content;
this.layer = layer;
this.supports = supports;
this.media = media;
this.sourceMap = sourceMap;
this.assets = assets;
this.assetsInfo = assetsInfo;
this._needBuild = true;
}
// no source() so webpack 4 doesn't do add stuff to the bundle
size() {
return this.content.length;
}
identifier() {
return `css|${this._identifier}|${this._identifierIndex}|${
this.layer || ""
}|${this.supports || ""}|${this.media}}}`;
}
/**
* @param {Parameters<Module["readableIdentifier"]>[0]} requestShortener
* @returns {ReturnType<Module["readableIdentifier"]>}
*/
readableIdentifier(requestShortener) {
return `css ${requestShortener.shorten(this._identifier)}${
this._identifierIndex ? ` (${this._identifierIndex})` : ""
}${this.layer ? ` (layer ${this.layer})` : ""}${
this.supports ? ` (supports ${this.supports})` : ""
}${this.media ? ` (media ${this.media})` : ""}`;
}
// eslint-disable-next-line class-methods-use-this
getSourceTypes() {
return TYPES;
}
// eslint-disable-next-line class-methods-use-this
codeGeneration() {
return CODE_GENERATION_RESULT;
}
nameForCondition() {
const resource =
/** @type {string} */
(this._identifier.split("!").pop());
const idx = resource.indexOf("?");
if (idx >= 0) {
return resource.substring(0, idx);
}
return resource;
}
/**
* @param {Module} module
*/
updateCacheModule(module) {
if (
!this.content.equals(/** @type {CssModule} */ (module).content) ||
this.layer !== /** @type {CssModule} */ (module).layer ||
this.supports !== /** @type {CssModule} */ (module).supports ||
this.media !== /** @type {CssModule} */ (module).media ||
(this.sourceMap
? !this.sourceMap.equals(
/** @type {Uint8Array} **/
(/** @type {CssModule} */ (module).sourceMap)
)
: false) ||
this.assets !== /** @type {CssModule} */ (module).assets ||
this.assetsInfo !== /** @type {CssModule} */ (module).assetsInfo
) {
this._needBuild = true;
this.content = /** @type {CssModule} */ (module).content;
this.layer = /** @type {CssModule} */ (module).layer;
this.supports = /** @type {CssModule} */ (module).supports;
this.media = /** @type {CssModule} */ (module).media;
this.sourceMap = /** @type {CssModule} */ (module).sourceMap;
this.assets = /** @type {CssModule} */ (module).assets;
this.assetsInfo = /** @type {CssModule} */ (module).assetsInfo;
}
}
// eslint-disable-next-line class-methods-use-this
needRebuild() {
return this._needBuild;
}
// eslint-disable-next-line class-methods-use-this
/**
* @param {Parameters<Module["needBuild"]>[0]} context context info
* @param {Parameters<Module["needBuild"]>[1]} callback callback function, returns true, if the module needs a rebuild
*/
needBuild(context, callback) {
// eslint-disable-next-line no-undefined
callback(undefined, this._needBuild);
}
/**
* @param {Parameters<Module["build"]>[0]} options
* @param {Parameters<Module["build"]>[1]} compilation
* @param {Parameters<Module["build"]>[2]} resolver
* @param {Parameters<Module["build"]>[3]} fileSystem
* @param {Parameters<Module["build"]>[4]} callback
*/
build(options, compilation, resolver, fileSystem, callback) {
this.buildInfo = {
assets: this.assets,
assetsInfo: this.assetsInfo,
cacheable: true,
hash: this._computeHash(
/** @type {string} */ (compilation.outputOptions.hashFunction)
),
};
this.buildMeta = {};
this._needBuild = false;
callback();
}
/**
* @private
* @param {string} hashFunction
* @returns {string | Buffer}
*/
_computeHash(hashFunction) {
const hash = webpack.util.createHash(hashFunction);
hash.update(this.content);
if (this.layer) {
hash.update(this.layer);
}
hash.update(this.supports || "");
hash.update(this.media || "");
hash.update(this.sourceMap || "");
return hash.digest("hex");
}
/**
* @param {Parameters<Module["updateHash"]>[0]} hash
* @param {Parameters<Module["updateHash"]>[1]} context
*/
updateHash(hash, context) {
super.updateHash(hash, context);
hash.update(
/** @type {NonNullable<Module["buildInfo"]>} */ (this.buildInfo).hash
);
}
/**
* @param {Parameters<Module["serialize"]>[0]} context
*/
serialize(context) {
const { write } = context;
write(this._context);
write(this._identifier);
write(this._identifierIndex);
write(this.content);
write(this.layer);
write(this.supports);
write(this.media);
write(this.sourceMap);
write(this.assets);
write(this.assetsInfo);
write(this._needBuild);
super.serialize(context);
}
/**
* @param {Parameters<Module["deserialize"]>[0]} context
*/
deserialize(context) {
this._needBuild = context.read();
super.deserialize(context);
}
}
cssModuleCache.set(webpack, CssModule);
webpack.util.serialization.register(
CssModule,
path.resolve(__dirname, "CssModule"),
// @ts-ignore
null,
{
serialize(instance, context) {
instance.serialize(context);
},
deserialize(context) {
const { read } = context;
const contextModule = read();
const identifier = read();
const identifierIndex = read();
const content = read();
const layer = read();
const supports = read();
const media = read();
const sourceMap = read();
const assets = read();
const assetsInfo = read();
const dep = new CssModule({
context: contextModule,
identifier,
identifierIndex,
content,
layer,
supports,
media,
sourceMap,
assets,
assetsInfo,
});
dep.deserialize(context);
return dep;
},
}
);
return CssModule;
}
/**
* @param {Compiler["webpack"]} webpack
* @returns {CssDependencyConstructor}
*/
static getCssDependency(webpack) {
/**
* Prevent creation of multiple CssDependency classes to allow other integrations to get the current CssDependency.
*/
if (cssDependencyCache.has(webpack)) {
return /** @type {CssDependencyConstructor} */ (
cssDependencyCache.get(webpack)
);
}
class CssDependency extends webpack.Dependency {
/**
* @param {CssDependencyOptions} loaderDependency
* @param {string | null} context
* @param {number} identifierIndex
*/
constructor(
{ identifier, content, layer, supports, media, sourceMap },
context,
identifierIndex
) {
super();
this.identifier = identifier;
this.identifierIndex = identifierIndex;
this.content = content;
this.layer = layer;
this.supports = supports;
this.media = media;
this.sourceMap = sourceMap;
this.context = context;
/** @type {{ [key: string]: Source } | undefined}} */
// eslint-disable-next-line no-undefined
this.assets = undefined;
/** @type {Map<string, AssetInfo> | undefined} */
// eslint-disable-next-line no-undefined
this.assetsInfo = undefined;
}
/**
* @returns {ReturnType<Dependency["getResourceIdentifier"]>}
*/
getResourceIdentifier() {
return `css-module-${this.identifier}-${this.identifierIndex}`;
}
/**
* @returns {ReturnType<Dependency["getModuleEvaluationSideEffectsState"]>}
*/
// eslint-disable-next-line class-methods-use-this
getModuleEvaluationSideEffectsState() {
return webpack.ModuleGraphConnection.TRANSITIVE_ONLY;
}
/**
* @param {Parameters<Dependency["serialize"]>[0]} context
*/
serialize(context) {
const { write } = context;
write(this.identifier);
write(this.content);
write(this.layer);
write(this.supports);
write(this.media);
write(this.sourceMap);
write(this.context);
write(this.identifierIndex);
write(this.assets);
write(this.assetsInfo);
super.serialize(context);
}
/**
* @param {Parameters<Dependency["deserialize"]>[0]} context
*/
deserialize(context) {
super.deserialize(context);
}
}
cssDependencyCache.set(webpack, CssDependency);
webpack.util.serialization.register(
CssDependency,
path.resolve(__dirname, "CssDependency"),
// @ts-ignore
null,
{
serialize(instance, context) {
instance.serialize(context);
},
deserialize(context) {
const { read } = context;
const dep = new CssDependency(
{
identifier: read(),
content: read(),
layer: read(),
supports: read(),
media: read(),
sourceMap: read(),
},
read(),
read()
);
const assets = read();
const assetsInfo = read();
dep.assets = assets;
dep.assetsInfo = assetsInfo;
dep.deserialize(context);
return dep;
},
}
);
return CssDependency;
}
/**
* Returns all hooks for the given compilation
* @param {Compilation} compilation
*/
static getCompilationHooks(compilation) {
return getCompilationHooks(compilation);
}
/**
* @param {PluginOptions} [options]
*/
constructor(options = {}) {
validate(/** @type {Schema} */ (schema), options, {
baseDataPath: "options",
});
/**
* @private
* @type {WeakMap<Chunk, Set<CssModule>>}
* @private
*/
this._sortedModulesCache = new WeakMap();
/**
* @private
* @type {NormalizedPluginOptions}
*/
this.options = Object.assign(
{
filename: DEFAULT_FILENAME,
ignoreOrder: false,
// TODO remove in the next major release
// eslint-disable-next-line no-undefined
experimentalUseImportModule: undefined,
runtime: true,
},
options
);
/**
* @private
* @type {RuntimeOptions}
*/
this.runtimeOptions = {
insert: options.insert,
linkType:
// Todo in next major release set default to "false"
(typeof options.linkType === "boolean" &&
/** @type {boolean} */ (options.linkType) === true) ||
typeof options.linkType === "undefined"
? "text/css"
: options.linkType,
attributes: options.attributes,
};
if (!this.options.chunkFilename) {
const { filename } = this.options;
if (typeof filename !== "function") {
const hasName = /** @type {string} */ (filename).includes("[name]");
const hasId = /** @type {string} */ (filename).includes("[id]");
const hasChunkHash =
/** @type {string} */
(filename).includes("[chunkhash]");
const hasContentHash =
/** @type {string} */
(filename).includes("[contenthash]");
// Anything changing depending on chunk is fine
if (hasChunkHash || hasContentHash || hasName || hasId) {
this.options.chunkFilename = filename;
} else {
// Otherwise prefix "[id]." in front of the basename to make it changing
this.options.chunkFilename =
/** @type {string} */
(filename).replace(/(^|\/)([^/]*(?:\?|$))/, "$1[id].$2");
}
} else {
this.options.chunkFilename = "[id].css";
}
}
}
/**
* @param {Compiler} compiler
*/
apply(compiler) {
const { webpack } = compiler;
if (this.options.experimentalUseImportModule) {
if (
typeof (
/** @type {Compiler["options"]["experiments"] & { executeModule?: boolean }} */
(compiler.options.experiments).executeModule
) === "undefined"
) {
/** @type {Compiler["options"]["experiments"] & { executeModule?: boolean }} */
// eslint-disable-next-line no-param-reassign
(compiler.options.experiments).executeModule = true;
}
}
// TODO bug in webpack, remove it after it will be fixed
// webpack tries to `require` loader firstly when serializer doesn't found
if (!registered.has(webpack)) {
registered.add(webpack);
webpack.util.serialization.registerLoader(
/^mini-css-extract-plugin\//,
trueFn
);
}
const { splitChunks } = compiler.options.optimization;
if (splitChunks) {
if (
/** @type {string[]} */ (splitChunks.defaultSizeTypes).includes("...")
) {
/** @type {string[]} */
(splitChunks.defaultSizeTypes).push(MODULE_TYPE);
}
}
const CssModule = MiniCssExtractPlugin.getCssModule(webpack);
const CssDependency = MiniCssExtractPlugin.getCssDependency(webpack);
const { NormalModule } = compiler.webpack;
compiler.hooks.compilation.tap(pluginName, (compilation) => {
const { loader: normalModuleHook } =
NormalModule.getCompilationHooks(compilation);
normalModuleHook.tap(
pluginName,
/**
* @param {object} loaderContext
*/
(loaderContext) => {
/** @type {object & { [pluginSymbol]: { experimentalUseImportModule: boolean | undefined } }} */
// eslint-disable-next-line no-param-reassign
(loaderContext)[pluginSymbol] = {
experimentalUseImportModule:
this.options.experimentalUseImportModule,
};
}
);
});
compiler.hooks.thisCompilation.tap(pluginName, (compilation) => {
class CssModuleFactory {
/**
* @param {{ dependencies: Dependency[] }} dependencies
* @param {(arg0?: Error, arg1?: TODO) => void} callback
*/
// eslint-disable-next-line class-methods-use-this
create({ dependencies: [dependency] }, callback) {
callback(
// eslint-disable-next-line no-undefined
undefined,
new CssModule(/** @type {CssDependency} */ (dependency))
);
}
}
compilation.dependencyFactories.set(
CssDependency,
new CssModuleFactory()
);
class CssDependencyTemplate {
// eslint-disable-next-line class-methods-use-this
apply() {}
}
compilation.dependencyTemplates.set(
CssDependency,
new CssDependencyTemplate()
);
compilation.hooks.renderManifest.tap(
pluginName,
/**
* @param {ReturnType<Compilation["getRenderManifest"]>} result
* @param {Parameters<Compilation["getRenderManifest"]>[0]} chunk
* @returns {TODO}
*/
(result, { chunk }) => {
const { chunkGraph } = compilation;
const { HotUpdateChunk } = webpack;
// We don't need hot update chunks for css
// We will use the real asset instead to update
if (chunk instanceof HotUpdateChunk) {
return;
}
/** @type {CssModule[]} */
const renderedModules = Array.from(
/** @type {CssModule[]} */
(this.getChunkModules(chunk, chunkGraph))
).filter(
(module) =>
// @ts-ignore
module.type === MODULE_TYPE
);
const filenameTemplate =
/** @type {string} */
(
chunk.canBeInitial()
? this.options.filename
: this.options.chunkFilename
);
if (renderedModules.length > 0) {
result.push({
render: () =>
this.renderContentAsset(
compiler,
compilation,
chunk,
renderedModules,
compilation.runtimeTemplate.requestShortener,
filenameTemplate,
{
contentHashType: MODULE_TYPE,
chunk,
}
),
filenameTemplate,
pathOptions: {
chunk,
contentHashType: MODULE_TYPE,
},
identifier: `${pluginName}.${chunk.id}`,
hash: chunk.contentHash[MODULE_TYPE],
});
}
}
);
compilation.hooks.contentHash.tap(pluginName, (chunk) => {
const { outputOptions, chunkGraph } = compilation;
const modules = this.sortModules(
compilation,
chunk,
/** @type {CssModule[]} */
(chunkGraph.getChunkModulesIterableBySourceType(chunk, MODULE_TYPE)),
compilation.runtimeTemplate.requestShortener
);
if (modules) {
const { hashFunction, hashDigest, hashDigestLength } = outputOptions;
const { createHash } = compiler.webpack.util;
const hash = createHash(/** @type {string} */ (hashFunction));
for (const m of modules) {
hash.update(chunkGraph.getModuleHash(m, chunk.runtime));
}
// eslint-disable-next-line no-param-reassign
chunk.contentHash[MODULE_TYPE] =
/** @type {string} */
(hash.digest(hashDigest)).substring(0, hashDigestLength);
}
});
// All the code below is dedicated to the runtime and can be skipped when the `runtime` option is `false`
if (!this.options.runtime) {
return;
}
const { Template, RuntimeGlobals, RuntimeModule, runtime } = webpack;
/**
* @param {Chunk} mainChunk
* @param {Compilation} compilation
* @returns {Record<string, number>}
*/
// eslint-disable-next-line no-shadow
const getCssChunkObject = (mainChunk, compilation) => {
/** @type {Record<string, number>} */
const obj = {};
const { chunkGraph } = compilation;
for (const chunk of mainChunk.getAllAsyncChunks()) {
const modules = chunkGraph.getOrderedChunkModulesIterable(
chunk,
compareModulesByIdentifier
);
for (const module of modules) {
// @ts-ignore
if (module.type === MODULE_TYPE) {
obj[/** @type {string} */ (chunk.id)] = 1;
break;
}
}
}
return obj;
};
class CssLoadingRuntimeModule extends RuntimeModule {
/**
* @param {Set<string>} runtimeRequirements
* @param {RuntimeOptions} runtimeOptions
*/
constructor(runtimeRequirements, runtimeOptions) {
super("css loading", 10);
this.runtimeRequirements = runtimeRequirements;
this.runtimeOptions = runtimeOptions;
}
generate() {
const { chunk, runtimeRequirements } = this;
const {
runtimeTemplate,
outputOptions: { crossOriginLoading },
} = /** @type {Compilation} */ (this.compilation);
const chunkMap = getCssChunkObject(
/** @type {Chunk} */ (chunk),
/** @type {Compilation} */ (this.compilation)
);
const withLoading =
runtimeRequirements.has(RuntimeGlobals.ensureChunkHandlers) &&
Object.keys(chunkMap).length > 0;
const withHmr = runtimeRequirements.has(
RuntimeGlobals.hmrDownloadUpdateHandlers
);
if (!withLoading && !withHmr) {
return "";
}
return Template.asString([
'if (typeof document === "undefined") return;',
`var createStylesheet = ${runtimeTemplate.basicFunction(
"chunkId, fullhref, oldTag, resolve, reject",
[
'var linkTag = document.createElement("link");',
this.runtimeOptions.attributes
? Template.asString(
Object.entries(this.runtimeOptions.attributes).map(
(entry) => {
const [key, value] = entry;
return `linkTag.setAttribute(${JSON.stringify(
key
)}, ${JSON.stringify(value)});`;
}
)
)
: "",
'linkTag.rel = "stylesheet";',
this.runtimeOptions.linkType
? `linkTag.type = ${JSON.stringify(
this.runtimeOptions.linkType
)};`
: "",
`var onLinkComplete = ${runtimeTemplate.basicFunction("event", [
"// avoid mem leaks.",
"linkTag.onerror = linkTag.onload = null;",
"if (event.type === 'load') {",
Template.indent(["resolve();"]),
"} else {",
Template.indent([
"var errorType = event && event.type;",
"var realHref = event && event.target && event.target.href || fullhref;",
'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + errorType + ": " + realHref + ")");',
'err.name = "ChunkLoadError";',
// TODO remove `code` in the future major release to align with webpack
'err.code = "CSS_CHUNK_LOAD_FAILED";',
"err.type = errorType;",
"err.request = realHref;",
"if (linkTag.parentNode) linkTag.parentNode.removeChild(linkTag)",
"reject(err);",
]),
"}",
])}`,
"linkTag.onerror = linkTag.onload = onLinkComplete;",
"linkTag.href = fullhref;",
crossOriginLoading
? Template.asString([
`if (linkTag.href.indexOf(window.location.origin + '/') !== 0) {`,
Template.indent(
`linkTag.crossOrigin = ${JSON.stringify(
crossOriginLoading
)};`
),
"}",
])
: "",
MiniCssExtractPlugin.getCompilationHooks(
compilation
).beforeTagInsert.call("", {
tag: "linkTag",
chunkId: "chunkId",
href: "fullhref",
resolve: "resolve",
reject: "reject",
}) || "",
typeof this.runtimeOptions.insert !== "undefined"
? typeof this.runtimeOptions.insert === "function"
? `(${this.runtimeOptions.insert.toString()})(linkTag)`
: Template.asString([
`var target = document.querySelector("${this.runtimeOptions.insert}");`,
`target.parentNode.insertBefore(linkTag, target.nextSibling);`,
])
: Template.asString([
"if (oldTag) {",
Template.indent([
"oldTag.parentNode.insertBefore(linkTag, oldTag.nextSibling);",
]),
"} else {",
Template.indent(["document.head.appendChild(linkTag);"]),
"}",
]),
"return linkTag;",
]
)};`,
`var findStylesheet = ${runtimeTemplate.basicFunction(
"href, fullhref",
[
'var existingLinkTags = document.getElementsByTagName("link");',
"for(var i = 0; i < existingLinkTags.length; i++) {",
Template.indent([
"var tag = existingLinkTags[i];",
'var dataHref = tag.getAttribute("data-href") || tag.getAttribute("href");',
'if(tag.rel === "stylesheet" && (dataHref === href || dataHref === fullhref)) return tag;',
]),
"}",
'var existingStyleTags = document.getElementsByTagName("style");',
"for(var i = 0; i < existingStyleTags.length; i++) {",
Template.indent([
"var tag = existingStyleTags[i];",
'var dataHref = tag.getAttribute("data-href");',
"if(dataHref === href || dataHref === fullhref) return tag;",
]),
"}",
]
)};`,
`var loadStylesheet = ${runtimeTemplate.basicFunction(
"chunkId",
`return new Promise(${runtimeTemplate.basicFunction(
"resolve, reject",
[
`var href = ${RuntimeGlobals.require}.miniCssF(chunkId);`,
`var fullhref = ${RuntimeGlobals.publicPath} + href;`,
"if(findStylesheet(href, fullhref)) return resolve();",
"createStylesheet(chunkId, fullhref, null, resolve, reject);",
]
)});`
)}`,
withLoading
? Template.asString([
"// object to store loaded CSS chunks",
"var installedCssChunks = {",
Template.indent(
/** @type {string[]} */
(/** @type {Chunk} */ (chunk).ids)
.map((id) => `${JSON.stringify(id)}: 0`)
.join(",\n")
),
"};",
"",
`${
RuntimeGlobals.ensureChunkHandlers
}.miniCss = ${runtimeTemplate.basicFunction(
"chunkId, promises",
[
`var cssChunks = ${JSON.stringify(chunkMap)};`,
"if(installedCssChunks[chunkId]) promises.push(installedCssChunks[chunkId]);",
"else if(installedCssChunks[chunkId] !== 0 && cssChunks[chunkId]) {",
Template.indent([
`promises.push(installedCssChunks[chunkId] = loadStylesheet(chunkId).then(${runtimeTemplate.basicFunction(
"",
"installedCssChunks[chunkId] = 0;"
)}, ${runtimeTemplate.basicFunction("e", [
"delete installedCssChunks[chunkId];",
"throw e;",