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defaults.js
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defaults.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const fs = require("fs");
const path = require("path");
const {
JAVASCRIPT_MODULE_TYPE_AUTO,
JSON_MODULE_TYPE,
WEBASSEMBLY_MODULE_TYPE_ASYNC,
JAVASCRIPT_MODULE_TYPE_ESM,
JAVASCRIPT_MODULE_TYPE_DYNAMIC,
WEBASSEMBLY_MODULE_TYPE_SYNC,
ASSET_MODULE_TYPE,
CSS_MODULE_TYPE
} = require("../ModuleTypeConstants");
const Template = require("../Template");
const { cleverMerge } = require("../util/cleverMerge");
const {
getTargetsProperties,
getTargetProperties,
getDefaultTarget
} = require("./target");
/** @typedef {import("../../declarations/WebpackOptions").CacheOptionsNormalized} CacheOptions */
/** @typedef {import("../../declarations/WebpackOptions").Context} Context */
/** @typedef {import("../../declarations/WebpackOptions").CssExperimentOptions} CssExperimentOptions */
/** @typedef {import("../../declarations/WebpackOptions").EntryDescription} EntryDescription */
/** @typedef {import("../../declarations/WebpackOptions").EntryNormalized} Entry */
/** @typedef {import("../../declarations/WebpackOptions").EntryStaticNormalized} EntryStaticNormalized */
/** @typedef {import("../../declarations/WebpackOptions").Environment} Environment */
/** @typedef {import("../../declarations/WebpackOptions").Experiments} Experiments */
/** @typedef {import("../../declarations/WebpackOptions").ExperimentsNormalized} ExperimentsNormalized */
/** @typedef {import("../../declarations/WebpackOptions").ExternalsPresets} ExternalsPresets */
/** @typedef {import("../../declarations/WebpackOptions").ExternalsType} ExternalsType */
/** @typedef {import("../../declarations/WebpackOptions").FileCacheOptions} FileCacheOptions */
/** @typedef {import("../../declarations/WebpackOptions").InfrastructureLogging} InfrastructureLogging */
/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
/** @typedef {import("../../declarations/WebpackOptions").Library} Library */
/** @typedef {import("../../declarations/WebpackOptions").LibraryName} LibraryName */
/** @typedef {import("../../declarations/WebpackOptions").LibraryOptions} LibraryOptions */
/** @typedef {import("../../declarations/WebpackOptions").LibraryType} LibraryType */
/** @typedef {import("../../declarations/WebpackOptions").Loader} Loader */
/** @typedef {import("../../declarations/WebpackOptions").Mode} Mode */
/** @typedef {import("../../declarations/WebpackOptions").ModuleOptionsNormalized} ModuleOptions */
/** @typedef {import("../../declarations/WebpackOptions").Node} WebpackNode */
/** @typedef {import("../../declarations/WebpackOptions").Optimization} Optimization */
/** @typedef {import("../../declarations/WebpackOptions").OptimizationSplitChunksOptions} OptimizationSplitChunksOptions */
/** @typedef {import("../../declarations/WebpackOptions").OutputNormalized} Output */
/** @typedef {import("../../declarations/WebpackOptions").ParserOptionsByModuleTypeKnown} ParserOptionsByModuleTypeKnown */
/** @typedef {import("../../declarations/WebpackOptions").Performance} Performance */
/** @typedef {import("../../declarations/WebpackOptions").ResolveOptions} ResolveOptions */
/** @typedef {import("../../declarations/WebpackOptions").RuleSetRules} RuleSetRules */
/** @typedef {import("../../declarations/WebpackOptions").SnapshotOptions} SnapshotOptions */
/** @typedef {import("../../declarations/WebpackOptions").Target} Target */
/** @typedef {import("../../declarations/WebpackOptions").WebpackOptionsNormalized} WebpackOptions */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Module")} Module */
/** @typedef {import("./target").TargetProperties} TargetProperties */
const NODE_MODULES_REGEXP = /[\\/]node_modules[\\/]/i;
/**
* Sets a constant default value when undefined
* @template T
* @template {keyof T} P
* @param {T} obj an object
* @param {P} prop a property of this object
* @param {T[P]} value a default value of the property
* @returns {void}
*/
const D = (obj, prop, value) => {
if (obj[prop] === undefined) {
obj[prop] = value;
}
};
/**
* Sets a dynamic default value when undefined, by calling the factory function
* @template T
* @template {keyof T} P
* @param {T} obj an object
* @param {P} prop a property of this object
* @param {function(): T[P]} factory a default value factory for the property
* @returns {void}
*/
const F = (obj, prop, factory) => {
if (obj[prop] === undefined) {
obj[prop] = factory();
}
};
/**
* Sets a dynamic default value when undefined, by calling the factory function.
* factory must return an array or undefined
* When the current value is already an array an contains "..." it's replaced with
* the result of the factory function
* @template T
* @template {keyof T} P
* @param {T} obj an object
* @param {P} prop a property of this object
* @param {function(): T[P]} factory a default value factory for the property
* @returns {void}
*/
const A = (obj, prop, factory) => {
const value = obj[prop];
if (value === undefined) {
obj[prop] = factory();
} else if (Array.isArray(value)) {
/** @type {any[] | undefined} */
let newArray = undefined;
for (let i = 0; i < value.length; i++) {
const item = value[i];
if (item === "...") {
if (newArray === undefined) {
newArray = value.slice(0, i);
obj[prop] = /** @type {T[P]} */ (/** @type {unknown} */ (newArray));
}
const items = /** @type {any[]} */ (/** @type {unknown} */ (factory()));
if (items !== undefined) {
for (const item of items) {
newArray.push(item);
}
}
} else if (newArray !== undefined) {
newArray.push(item);
}
}
}
};
/**
* @param {WebpackOptions} options options to be modified
* @returns {void}
*/
const applyWebpackOptionsBaseDefaults = options => {
F(options, "context", () => process.cwd());
applyInfrastructureLoggingDefaults(options.infrastructureLogging);
};
/**
* @param {WebpackOptions} options options to be modified
* @returns {void}
*/
const applyWebpackOptionsDefaults = options => {
F(options, "context", () => process.cwd());
F(options, "target", () => {
return getDefaultTarget(/** @type {string} */ (options.context));
});
const { mode, name, target } = options;
let targetProperties =
target === false
? /** @type {false} */ (false)
: typeof target === "string"
? getTargetProperties(target, /** @type {Context} */ (options.context))
: getTargetsProperties(
/** @type {string[]} */ (target),
/** @type {Context} */ (options.context)
);
const development = mode === "development";
const production = mode === "production" || !mode;
if (typeof options.entry !== "function") {
for (const key of Object.keys(options.entry)) {
F(
options.entry[key],
"import",
() => /** @type {[string]} */ (["./src"])
);
}
}
F(options, "devtool", () => (development ? "eval" : false));
D(options, "watch", false);
D(options, "profile", false);
D(options, "parallelism", 100);
D(options, "recordsInputPath", false);
D(options, "recordsOutputPath", false);
applyExperimentsDefaults(options.experiments, {
production,
development,
targetProperties
});
const futureDefaults =
/** @type {NonNullable<ExperimentsNormalized["futureDefaults"]>} */
(options.experiments.futureDefaults);
F(options, "cache", () =>
development ? { type: /** @type {"memory"} */ ("memory") } : false
);
applyCacheDefaults(options.cache, {
name: name || "default",
mode: mode || "production",
development,
cacheUnaffected: options.experiments.cacheUnaffected
});
const cache = !!options.cache;
applySnapshotDefaults(options.snapshot, {
production,
futureDefaults
});
applyModuleDefaults(options.module, {
cache,
syncWebAssembly:
/** @type {NonNullable<ExperimentsNormalized["syncWebAssembly"]>} */
(options.experiments.syncWebAssembly),
asyncWebAssembly:
/** @type {NonNullable<ExperimentsNormalized["asyncWebAssembly"]>} */
(options.experiments.asyncWebAssembly),
css:
/** @type {NonNullable<ExperimentsNormalized["css"]>} */
(options.experiments.css),
futureDefaults,
isNode: targetProperties && targetProperties.node === true
});
applyOutputDefaults(options.output, {
context: /** @type {Context} */ (options.context),
targetProperties,
isAffectedByBrowserslist:
target === undefined ||
(typeof target === "string" && target.startsWith("browserslist")) ||
(Array.isArray(target) &&
target.some(target => target.startsWith("browserslist"))),
outputModule:
/** @type {NonNullable<ExperimentsNormalized["outputModule"]>} */
(options.experiments.outputModule),
development,
entry: options.entry,
module: options.module,
futureDefaults
});
applyExternalsPresetsDefaults(options.externalsPresets, {
targetProperties,
buildHttp: !!options.experiments.buildHttp
});
applyLoaderDefaults(
/** @type {NonNullable<WebpackOptions["loader"]>} */ (options.loader),
{ targetProperties, environment: options.output.environment }
);
F(options, "externalsType", () => {
const validExternalTypes = require("../../schemas/WebpackOptions.json")
.definitions.ExternalsType.enum;
return options.output.library &&
validExternalTypes.includes(options.output.library.type)
? /** @type {ExternalsType} */ (options.output.library.type)
: options.output.module
? "module"
: "var";
});
applyNodeDefaults(options.node, {
futureDefaults:
/** @type {NonNullable<WebpackOptions["experiments"]["futureDefaults"]>} */
(options.experiments.futureDefaults),
targetProperties
});
F(options, "performance", () =>
production &&
targetProperties &&
(targetProperties.browser || targetProperties.browser === null)
? {}
: false
);
applyPerformanceDefaults(
/** @type {NonNullable<WebpackOptions["performance"]>} */
(options.performance),
{
production
}
);
applyOptimizationDefaults(options.optimization, {
development,
production,
css:
/** @type {NonNullable<ExperimentsNormalized["css"]>} */
(options.experiments.css),
records: !!(options.recordsInputPath || options.recordsOutputPath)
});
options.resolve = cleverMerge(
getResolveDefaults({
cache,
context: /** @type {Context} */ (options.context),
targetProperties,
mode: /** @type {Mode} */ (options.mode)
}),
options.resolve
);
options.resolveLoader = cleverMerge(
getResolveLoaderDefaults({ cache }),
options.resolveLoader
);
};
/**
* @param {ExperimentsNormalized} experiments options
* @param {Object} options options
* @param {boolean} options.production is production
* @param {boolean} options.development is development mode
* @param {TargetProperties | false} options.targetProperties target properties
* @returns {void}
*/
const applyExperimentsDefaults = (
experiments,
{ production, development, targetProperties }
) => {
D(experiments, "futureDefaults", false);
D(experiments, "backCompat", !experiments.futureDefaults);
D(experiments, "syncWebAssembly", false);
D(experiments, "asyncWebAssembly", experiments.futureDefaults);
D(experiments, "outputModule", false);
D(experiments, "layers", false);
D(experiments, "lazyCompilation", undefined);
D(experiments, "buildHttp", undefined);
D(experiments, "cacheUnaffected", experiments.futureDefaults);
F(experiments, "css", () => (experiments.futureDefaults ? {} : undefined));
// TODO webpack 6: remove this. topLevelAwait should be enabled by default
let shouldEnableTopLevelAwait = true;
if (typeof experiments.topLevelAwait === "boolean") {
shouldEnableTopLevelAwait = experiments.topLevelAwait;
}
D(experiments, "topLevelAwait", shouldEnableTopLevelAwait);
if (typeof experiments.buildHttp === "object") {
D(experiments.buildHttp, "frozen", production);
D(experiments.buildHttp, "upgrade", false);
}
if (typeof experiments.css === "object") {
D(
experiments.css,
"exportsOnly",
!targetProperties || !targetProperties.document
);
}
};
/**
* @param {CacheOptions} cache options
* @param {Object} options options
* @param {string} options.name name
* @param {Mode} options.mode mode
* @param {boolean} options.development is development mode
* @param {Experiments["cacheUnaffected"]} options.cacheUnaffected the cacheUnaffected experiment is enabled
* @returns {void}
*/
const applyCacheDefaults = (
cache,
{ name, mode, development, cacheUnaffected }
) => {
if (cache === false) return;
switch (cache.type) {
case "filesystem":
F(cache, "name", () => name + "-" + mode);
D(cache, "version", "");
F(cache, "cacheDirectory", () => {
const cwd = process.cwd();
/** @type {string | undefined} */
let dir = cwd;
for (;;) {
try {
if (fs.statSync(path.join(dir, "package.json")).isFile()) break;
// eslint-disable-next-line no-empty
} catch (e) {}
const parent = path.dirname(dir);
if (dir === parent) {
dir = undefined;
break;
}
dir = parent;
}
if (!dir) {
return path.resolve(cwd, ".cache/webpack");
} else if (process.versions.pnp === "1") {
return path.resolve(dir, ".pnp/.cache/webpack");
} else if (process.versions.pnp === "3") {
return path.resolve(dir, ".yarn/.cache/webpack");
} else {
return path.resolve(dir, "node_modules/.cache/webpack");
}
});
F(cache, "cacheLocation", () =>
path.resolve(
/** @type {NonNullable<FileCacheOptions["cacheDirectory"]>} */
(cache.cacheDirectory),
/** @type {NonNullable<FileCacheOptions["name"]>} */ (cache.name)
)
);
D(cache, "hashAlgorithm", "md4");
D(cache, "store", "pack");
D(cache, "compression", false);
D(cache, "profile", false);
D(cache, "idleTimeout", 60000);
D(cache, "idleTimeoutForInitialStore", 5000);
D(cache, "idleTimeoutAfterLargeChanges", 1000);
D(cache, "maxMemoryGenerations", development ? 5 : Infinity);
D(cache, "maxAge", 1000 * 60 * 60 * 24 * 60); // 1 month
D(cache, "allowCollectingMemory", development);
D(cache, "memoryCacheUnaffected", development && cacheUnaffected);
D(cache, "readonly", false);
D(
/** @type {NonNullable<FileCacheOptions["buildDependencies"]>} */
(cache.buildDependencies),
"defaultWebpack",
[path.resolve(__dirname, "..") + path.sep]
);
break;
case "memory":
D(cache, "maxGenerations", Infinity);
D(cache, "cacheUnaffected", development && cacheUnaffected);
break;
}
};
/**
* @param {SnapshotOptions} snapshot options
* @param {Object} options options
* @param {boolean} options.production is production
* @param {boolean} options.futureDefaults is future defaults enabled
* @returns {void}
*/
const applySnapshotDefaults = (snapshot, { production, futureDefaults }) => {
if (futureDefaults) {
F(snapshot, "managedPaths", () =>
process.versions.pnp === "3"
? [
/^(.+?(?:[\\/]\.yarn[\\/]unplugged[\\/][^\\/]+)?[\\/]node_modules[\\/])/
]
: [/^(.+?[\\/]node_modules[\\/])/]
);
F(snapshot, "immutablePaths", () =>
process.versions.pnp === "3"
? [/^(.+?[\\/]cache[\\/][^\\/]+\.zip[\\/]node_modules[\\/])/]
: []
);
} else {
A(snapshot, "managedPaths", () => {
if (process.versions.pnp === "3") {
const match =
/^(.+?)[\\/]cache[\\/]watchpack-npm-[^\\/]+\.zip[\\/]node_modules[\\/]/.exec(
require.resolve("watchpack")
);
if (match) {
return [path.resolve(match[1], "unplugged")];
}
} else {
const match = /^(.+?[\\/]node_modules[\\/])/.exec(
// eslint-disable-next-line node/no-extraneous-require
require.resolve("watchpack")
);
if (match) {
return [match[1]];
}
}
return [];
});
A(snapshot, "immutablePaths", () => {
if (process.versions.pnp === "1") {
const match =
/^(.+?[\\/]v4)[\\/]npm-watchpack-[^\\/]+-[\da-f]{40}[\\/]node_modules[\\/]/.exec(
require.resolve("watchpack")
);
if (match) {
return [match[1]];
}
} else if (process.versions.pnp === "3") {
const match =
/^(.+?)[\\/]watchpack-npm-[^\\/]+\.zip[\\/]node_modules[\\/]/.exec(
require.resolve("watchpack")
);
if (match) {
return [match[1]];
}
}
return [];
});
}
F(snapshot, "resolveBuildDependencies", () => ({
timestamp: true,
hash: true
}));
F(snapshot, "buildDependencies", () => ({ timestamp: true, hash: true }));
F(snapshot, "module", () =>
production ? { timestamp: true, hash: true } : { timestamp: true }
);
F(snapshot, "resolve", () =>
production ? { timestamp: true, hash: true } : { timestamp: true }
);
};
/**
* @param {JavascriptParserOptions} parserOptions parser options
* @param {Object} options options
* @param {boolean} options.futureDefaults is future defaults enabled
* @param {boolean} options.isNode is node target platform
* @returns {void}
*/
const applyJavascriptParserOptionsDefaults = (
parserOptions,
{ futureDefaults, isNode }
) => {
D(parserOptions, "unknownContextRequest", ".");
D(parserOptions, "unknownContextRegExp", false);
D(parserOptions, "unknownContextRecursive", true);
D(parserOptions, "unknownContextCritical", true);
D(parserOptions, "exprContextRequest", ".");
D(parserOptions, "exprContextRegExp", false);
D(parserOptions, "exprContextRecursive", true);
D(parserOptions, "exprContextCritical", true);
D(parserOptions, "wrappedContextRegExp", /.*/);
D(parserOptions, "wrappedContextRecursive", true);
D(parserOptions, "wrappedContextCritical", false);
D(parserOptions, "strictThisContextOnImports", false);
D(parserOptions, "importMeta", true);
D(parserOptions, "dynamicImportMode", "lazy");
D(parserOptions, "dynamicImportPrefetch", false);
D(parserOptions, "dynamicImportPreload", false);
D(parserOptions, "createRequire", isNode);
if (futureDefaults) D(parserOptions, "exportsPresence", "error");
};
/**
* @param {ModuleOptions} module options
* @param {Object} options options
* @param {boolean} options.cache is caching enabled
* @param {boolean} options.syncWebAssembly is syncWebAssembly enabled
* @param {boolean} options.asyncWebAssembly is asyncWebAssembly enabled
* @param {CssExperimentOptions|false} options.css is css enabled
* @param {boolean} options.futureDefaults is future defaults enabled
* @param {boolean} options.isNode is node target platform
* @returns {void}
*/
const applyModuleDefaults = (
module,
{ cache, syncWebAssembly, asyncWebAssembly, css, futureDefaults, isNode }
) => {
if (cache) {
D(
module,
"unsafeCache",
/**
* @param {Module} module module
* @returns {boolean | null | string} true, if we want to cache the module
*/
module => {
const name = module.nameForCondition();
return name && NODE_MODULES_REGEXP.test(name);
}
);
} else {
D(module, "unsafeCache", false);
}
F(module.parser, ASSET_MODULE_TYPE, () => ({}));
F(
/** @type {NonNullable<ParserOptionsByModuleTypeKnown["asset"]>} */
(module.parser.asset),
"dataUrlCondition",
() => ({})
);
if (
typeof (
/** @type {NonNullable<ParserOptionsByModuleTypeKnown["asset"]>} */
(module.parser.asset).dataUrlCondition
) === "object"
) {
D(
/** @type {NonNullable<ParserOptionsByModuleTypeKnown["asset"]>} */
(module.parser.asset).dataUrlCondition,
"maxSize",
8096
);
}
F(module.parser, "javascript", () => ({}));
applyJavascriptParserOptionsDefaults(
/** @type {NonNullable<ParserOptionsByModuleTypeKnown["javascript"]>} */
(module.parser.javascript),
{
futureDefaults,
isNode
}
);
A(module, "defaultRules", () => {
const esm = {
type: JAVASCRIPT_MODULE_TYPE_ESM,
resolve: {
byDependency: {
esm: {
fullySpecified: true
}
}
}
};
const commonjs = {
type: JAVASCRIPT_MODULE_TYPE_DYNAMIC
};
/** @type {RuleSetRules} */
const rules = [
{
mimetype: "application/node",
type: JAVASCRIPT_MODULE_TYPE_AUTO
},
{
test: /\.json$/i,
type: JSON_MODULE_TYPE
},
{
mimetype: "application/json",
type: JSON_MODULE_TYPE
},
{
test: /\.mjs$/i,
...esm
},
{
test: /\.js$/i,
descriptionData: {
type: "module"
},
...esm
},
{
test: /\.cjs$/i,
...commonjs
},
{
test: /\.js$/i,
descriptionData: {
type: "commonjs"
},
...commonjs
},
{
mimetype: {
or: ["text/javascript", "application/javascript"]
},
...esm
}
];
if (asyncWebAssembly) {
const wasm = {
type: WEBASSEMBLY_MODULE_TYPE_ASYNC,
rules: [
{
descriptionData: {
type: "module"
},
resolve: {
fullySpecified: true
}
}
]
};
rules.push({
test: /\.wasm$/i,
...wasm
});
rules.push({
mimetype: "application/wasm",
...wasm
});
} else if (syncWebAssembly) {
const wasm = {
type: WEBASSEMBLY_MODULE_TYPE_SYNC,
rules: [
{
descriptionData: {
type: "module"
},
resolve: {
fullySpecified: true
}
}
]
};
rules.push({
test: /\.wasm$/i,
...wasm
});
rules.push({
mimetype: "application/wasm",
...wasm
});
}
if (css) {
const cssRule = {
type: CSS_MODULE_TYPE,
resolve: {
fullySpecified: true,
preferRelative: true
}
};
const cssModulesRule = {
type: "css/module",
resolve: {
fullySpecified: true
}
};
rules.push({
test: /\.css$/i,
oneOf: [
{
test: /\.module\.css$/i,
...cssModulesRule
},
{
...cssRule
}
]
});
rules.push({
mimetype: "text/css+module",
...cssModulesRule
});
rules.push({
mimetype: "text/css",
...cssRule
});
}
rules.push(
{
dependency: "url",
oneOf: [
{
scheme: /^data$/,
type: "asset/inline"
},
{
type: "asset/resource"
}
]
},
{
assert: { type: "json" },
type: JSON_MODULE_TYPE
}
);
return rules;
});
};
/**
* @param {Output} output options
* @param {Object} options options
* @param {string} options.context context
* @param {TargetProperties | false} options.targetProperties target properties
* @param {boolean} options.isAffectedByBrowserslist is affected by browserslist
* @param {boolean} options.outputModule is outputModule experiment enabled
* @param {boolean} options.development is development mode
* @param {Entry} options.entry entry option
* @param {ModuleOptions} options.module module option
* @param {boolean} options.futureDefaults is future defaults enabled
* @returns {void}
*/
const applyOutputDefaults = (
output,
{
context,
targetProperties: tp,
isAffectedByBrowserslist,
outputModule,
development,
entry,
module,
futureDefaults
}
) => {
/**
* @param {Library=} library the library option
* @returns {string} a readable library name
*/
const getLibraryName = library => {
const libraryName =
typeof library === "object" &&
library &&
!Array.isArray(library) &&
"type" in library
? library.name
: /** @type {LibraryName} */ (library);
if (Array.isArray(libraryName)) {
return libraryName.join(".");
} else if (typeof libraryName === "object") {
return getLibraryName(libraryName.root);
} else if (typeof libraryName === "string") {
return libraryName;
}
return "";
};
F(output, "uniqueName", () => {
const libraryName = getLibraryName(output.library).replace(
/^\[(\\*[\w:]+\\*)\](\.)|(\.)\[(\\*[\w:]+\\*)\](?=\.|$)|\[(\\*[\w:]+\\*)\]/g,
(m, a, d1, d2, b, c) => {
const content = a || b || c;
return content.startsWith("\\") && content.endsWith("\\")
? `${d2 || ""}[${content.slice(1, -1)}]${d1 || ""}`
: "";
}
);
if (libraryName) return libraryName;
const pkgPath = path.resolve(context, "package.json");
try {
const packageInfo = JSON.parse(fs.readFileSync(pkgPath, "utf-8"));
return packageInfo.name || "";
} catch (e) {
if (/** @type {Error & { code: string }} */ (e).code !== "ENOENT") {
/** @type {Error & { code: string }} */
(
e
).message += `\nwhile determining default 'output.uniqueName' from 'name' in ${pkgPath}`;
throw e;
}
return "";
}
});
F(output, "module", () => !!outputModule);
D(output, "filename", output.module ? "[name].mjs" : "[name].js");
F(output, "iife", () => !output.module);
D(output, "importFunctionName", "import");
D(output, "importMetaName", "import.meta");
F(output, "chunkFilename", () => {
const filename =
/** @type {NonNullable<Output["chunkFilename"]>} */
(output.filename);
if (typeof filename !== "function") {
const hasName = filename.includes("[name]");
const hasId = filename.includes("[id]");
const hasChunkHash = filename.includes("[chunkhash]");
const hasContentHash = filename.includes("[contenthash]");
// Anything changing depending on chunk is fine
if (hasChunkHash || hasContentHash || hasName || hasId) return filename;
// Otherwise prefix "[id]." in front of the basename to make it changing
return filename.replace(/(^|\/)([^/]*(?:\?|$))/, "$1[id].$2");
}
return output.module ? "[id].mjs" : "[id].js";
});
F(output, "cssFilename", () => {
const filename =
/** @type {NonNullable<Output["cssFilename"]>} */
(output.filename);
if (typeof filename !== "function") {
return filename.replace(/\.[mc]?js(\?|$)/, ".css$1");
}
return "[id].css";
});
F(output, "cssChunkFilename", () => {
const chunkFilename =
/** @type {NonNullable<Output["cssChunkFilename"]>} */
(output.chunkFilename);
if (typeof chunkFilename !== "function") {
return chunkFilename.replace(/\.[mc]?js(\?|$)/, ".css$1");
}
return "[id].css";
});
D(output, "assetModuleFilename", "[hash][ext][query]");
D(output, "webassemblyModuleFilename", "[hash].module.wasm");
D(output, "compareBeforeEmit", true);
D(output, "charset", true);
F(output, "hotUpdateGlobal", () =>
Template.toIdentifier(
"webpackHotUpdate" +
Template.toIdentifier(
/** @type {NonNullable<Output["uniqueName"]>} */ (output.uniqueName)
)
)
);
F(output, "chunkLoadingGlobal", () =>
Template.toIdentifier(
"webpackChunk" +
Template.toIdentifier(
/** @type {NonNullable<Output["uniqueName"]>} */ (output.uniqueName)
)
)
);
F(output, "globalObject", () => {
if (tp) {
if (tp.global) return "global";
if (tp.globalThis) return "globalThis";
}
return "self";
});
F(output, "chunkFormat", () => {
if (tp) {
const helpMessage = isAffectedByBrowserslist
? "Make sure that your 'browserslist' includes only platforms that support these features or select an appropriate 'target' to allow selecting a chunk format by default. Alternatively specify the 'output.chunkFormat' directly."
: "Select an appropriate 'target' to allow selecting one by default, or specify the 'output.chunkFormat' directly.";
if (output.module) {
if (tp.dynamicImport) return "module";
if (tp.document) return "array-push";
throw new Error(
"For the selected environment is no default ESM chunk format available:\n" +
"ESM exports can be chosen when 'import()' is available.\n" +
"JSONP Array push can be chosen when 'document' is available.\n" +
helpMessage
);
} else {
if (tp.document) return "array-push";
if (tp.require) return "commonjs";
if (tp.nodeBuiltins) return "commonjs";
if (tp.importScripts) return "array-push";
throw new Error(
"For the selected environment is no default script chunk format available:\n" +
"JSONP Array push can be chosen when 'document' or 'importScripts' is available.\n" +
"CommonJs exports can be chosen when 'require' or node builtins are available.\n" +
helpMessage
);
}
}
throw new Error(
"Chunk format can't be selected by default when no target is specified"
);
});
D(output, "asyncChunks", true);
F(output, "chunkLoading", () => {
if (tp) {
switch (output.chunkFormat) {
case "array-push":
if (tp.document) return "jsonp";
if (tp.importScripts) return "import-scripts";
break;
case "commonjs":
if (tp.require) return "require";
if (tp.nodeBuiltins) return "async-node";
break;
case "module":
if (tp.dynamicImport) return "import";
break;
}
if (
tp.require === null ||
tp.nodeBuiltins === null ||
tp.document === null ||
tp.importScripts === null
) {
return "universal";
}
}
return false;
});
F(output, "workerChunkLoading", () => {
if (tp) {
switch (output.chunkFormat) {
case "array-push":
if (tp.importScriptsInWorker) return "import-scripts";
break;
case "commonjs":
if (tp.require) return "require";
if (tp.nodeBuiltins) return "async-node";
break;
case "module":
if (tp.dynamicImportInWorker) return "import";
break;
}
if (
tp.require === null ||
tp.nodeBuiltins === null ||
tp.importScriptsInWorker === null
) {
return "universal";
}
}
return false;
});
F(output, "wasmLoading", () => {
if (tp) {
if (tp.fetchWasm) return "fetch";
if (tp.nodeBuiltins)
return output.module ? "async-node-module" : "async-node";
if (tp.nodeBuiltins === null || tp.fetchWasm === null) {
return "universal";
}
}
return false;
});
F(output, "workerWasmLoading", () => output.wasmLoading);
F(output, "devtoolNamespace", () => output.uniqueName);
if (output.library) {
F(output.library, "type", () => (output.module ? "module" : "var"));