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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 Template = require("../Template");
const { cleverMerge } = require("../util/cleverMerge");
const {
getTargetsProperties,
getTargetProperties,
getDefaultTarget
} = require("./target");
/** @typedef {import("../../declarations/WebpackOptions").CacheOptionsNormalized} CacheOptions */
/** @typedef {import("../../declarations/WebpackOptions").EntryDescription} EntryDescription */
/** @typedef {import("../../declarations/WebpackOptions").EntryNormalized} Entry */
/** @typedef {import("../../declarations/WebpackOptions").Experiments} Experiments */
/** @typedef {import("../../declarations/WebpackOptions").ExternalsPresets} ExternalsPresets */
/** @typedef {import("../../declarations/WebpackOptions").ExternalsType} ExternalsType */
/** @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").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").OutputNormalized} Output */
/** @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("./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[]} */
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(options.context);
});
const { mode, name, target } = options;
let targetProperties =
target === false
? /** @type {false} */ (false)
: typeof target === "string"
? getTargetProperties(target, options.context)
: getTargetsProperties(target, 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);
F(options, "cache", () =>
development ? { type: /** @type {"memory"} */ ("memory") } : false
);
applyCacheDefaults(options.cache, {
name: name || "default",
mode: mode || "production",
development
});
const cache = !!options.cache;
applySnapshotDefaults(options.snapshot, { production });
applyExperimentsDefaults(options.experiments);
applyModuleDefaults(options.module, {
cache,
syncWebAssembly: options.experiments.syncWebAssembly,
asyncWebAssembly: options.experiments.asyncWebAssembly
});
applyOutputDefaults(options.output, {
context: options.context,
targetProperties,
outputModule: options.experiments.outputModule,
development,
entry: options.entry,
module: options.module
});
applyExternalsPresetsDefaults(options.externalsPresets, { targetProperties });
applyLoaderDefaults(options.loader, { targetProperties });
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, { targetProperties });
F(options, "performance", () =>
production &&
targetProperties &&
(targetProperties.browser || targetProperties.browser === null)
? {}
: false
);
applyPerformanceDefaults(options.performance, {
production
});
applyOptimizationDefaults(options.optimization, {
development,
production,
records: !!(options.recordsInputPath || options.recordsOutputPath)
});
options.resolve = cleverMerge(
getResolveDefaults({
cache,
context: options.context,
targetProperties,
mode: options.mode
}),
options.resolve
);
options.resolveLoader = cleverMerge(
getResolveLoaderDefaults({ cache }),
options.resolveLoader
);
};
/**
* @param {Experiments} experiments options
* @returns {void}
*/
const applyExperimentsDefaults = experiments => {
D(experiments, "topLevelAwait", false);
D(experiments, "syncWebAssembly", false);
D(experiments, "asyncWebAssembly", false);
D(experiments, "outputModule", false);
};
/**
* @param {CacheOptions} cache options
* @param {Object} options options
* @param {string} options.name name
* @param {string} options.mode mode
* @param {boolean} options.development is development mode
* @returns {void}
*/
const applyCacheDefaults = (cache, { name, mode, development }) => {
if (cache === false) return;
switch (cache.type) {
case "filesystem":
F(cache, "name", () => name + "-" + mode);
D(cache, "version", "");
F(cache, "cacheDirectory", () => {
const cwd = process.cwd();
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(cache.cacheDirectory, cache.name)
);
D(cache, "hashAlgorithm", "md4");
D(cache, "store", "pack");
D(cache, "profile", false);
D(cache, "idleTimeout", 60000);
D(cache, "idleTimeoutForInitialStore", 0);
D(cache, "maxMemoryGenerations", development ? 5 : Infinity);
D(cache, "maxAge", 1000 * 60 * 60 * 24 * 60); // 1 month
D(cache, "allowCollectingMemory", development);
D(cache.buildDependencies, "defaultWebpack", [
path.resolve(__dirname, "..") + path.sep
]);
break;
case "memory":
D(cache, "maxGenerations", Infinity);
break;
}
};
/**
* @param {SnapshotOptions} snapshot options
* @param {Object} options options
* @param {boolean} options.production is production
* @returns {void}
*/
const applySnapshotDefaults = (snapshot, { production }) => {
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
* @returns {void}
*/
const applyJavascriptParserOptionsDefaults = parserOptions => {
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, "strictExportPresence", false);
D(parserOptions, "strictThisContextOnImports", false);
};
/**
* @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
* @returns {void}
*/
const applyModuleDefaults = (
module,
{ cache, syncWebAssembly, asyncWebAssembly }
) => {
if (cache) {
D(module, "unsafeCache", module => {
const name = module.nameForCondition();
return name && NODE_MODULES_REGEXP.test(name);
});
} else {
D(module, "unsafeCache", false);
}
F(module.parser, "asset", () => ({}));
F(module.parser.asset, "dataUrlCondition", () => ({}));
if (typeof module.parser.asset.dataUrlCondition === "object") {
D(module.parser.asset.dataUrlCondition, "maxSize", 8096);
}
F(module.parser, "javascript", () => ({}));
applyJavascriptParserOptionsDefaults(module.parser.javascript);
A(module, "defaultRules", () => {
const esm = {
type: "javascript/esm",
resolve: {
byDependency: {
esm: {
fullySpecified: true
}
}
}
};
const commonjs = {
type: "javascript/dynamic"
};
/** @type {RuleSetRules} */
const rules = [
{
mimetype: "application/node",
type: "javascript/auto"
},
{
test: /\.json$/i,
type: "json"
},
{
mimetype: "application/json",
type: "json"
},
{
test: /\.mjs$/i,
...esm
},
{
test: /\.js$/i,
descriptionData: {
type: "module"
},
...esm
},
{
test: /\.cjs$/i,
...commonjs
},
{
test: /\.js$/i,
descriptionData: {
type: "commonjs"
},
...commonjs
},
{
mimetype: {
or: ["text/javascript", "application/javascript"]
},
...esm
},
{
dependency: "url",
oneOf: [
{
scheme: /^data$/,
type: "asset/inline"
},
{
type: "asset/resource"
}
]
}
];
if (asyncWebAssembly) {
const wasm = {
type: "webassembly/async",
rules: [
{
descriptionData: {
type: "module"
},
resolve: {
fullySpecified: true
}
}
]
};
rules.push({
test: /\.wasm$/i,
...wasm
});
rules.push({
mimetype: "application/wasm",
...wasm
});
} else if (syncWebAssembly) {
const wasm = {
type: "webassembly/sync",
rules: [
{
descriptionData: {
type: "module"
},
resolve: {
fullySpecified: true
}
}
]
};
rules.push({
test: /\.wasm$/i,
...wasm
});
rules.push({
mimetype: "application/wasm",
...wasm
});
}
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.outputModule is outputModule experiment enabled
* @param {boolean} options.development is development mode
* @param {Entry} options.entry entry option
* @param {ModuleOptions} options.module module option
* @returns {void}
*/
const applyOutputDefaults = (
output,
{ context, targetProperties: tp, outputModule, development, entry, module }
) => {
/**
* @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);
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 (e.code !== "ENOENT") {
e.message += `\nwhile determining default 'output.uniqueName' from 'name' in ${pkgPath}`;
throw e;
}
return "";
}
});
D(output, "filename", "[name].js");
F(output, "module", () => !!outputModule);
F(output, "iife", () => !output.module);
D(output, "importFunctionName", "import");
D(output, "importMetaName", "import.meta");
F(output, "chunkFilename", () => {
const filename = output.filename;
if (typeof filename !== "function") {
const hasName = filename.includes("[name]");
const hasId = filename.includes("[id]");
const hasChunkHash = filename.includes("[chunkhash]");
const hasContentHash = filename.includes("[contenthash]");
// Anything changing depending on chunk is fine
if (hasChunkHash || hasContentHash || hasName || hasId) return filename;
// Otherwise prefix "[id]." in front of the basename to make it changing
return filename.replace(/(^|\/)([^/]*(?:\?|$))/, "$1[id].$2");
}
return "[id].js";
});
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(output.uniqueName)
)
);
F(output, "chunkLoadingGlobal", () =>
Template.toIdentifier(
"webpackChunk" + Template.toIdentifier(output.uniqueName)
)
);
F(output, "globalObject", () => {
if (tp) {
if (tp.global) return "global";
if (tp.globalThis) return "globalThis";
}
return "self";
});
F(output, "chunkFormat", () => {
if (tp) {
if (tp.document) return "array-push";
if (tp.require) return "commonjs";
if (tp.nodeBuiltins) return "commonjs";
if (tp.importScripts) return "array-push";
if (tp.dynamicImport && output.module) return "module";
}
return false;
});
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 "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"));
}
F(output, "path", () => path.join(process.cwd(), "dist"));
F(output, "pathinfo", () => development);
D(output, "sourceMapFilename", "[file].map[query]");
D(output, "hotUpdateChunkFilename", "[id].[fullhash].hot-update.js");
D(output, "hotUpdateMainFilename", "[runtime].[fullhash].hot-update.json");
D(output, "crossOriginLoading", false);
F(output, "scriptType", () => (output.module ? "module" : false));
D(
output,
"publicPath",
(tp && (tp.document || tp.importScripts)) || output.scriptType === "module"
? "auto"
: ""
);
D(output, "chunkLoadTimeout", 120000);
D(output, "hashFunction", "md4");
D(output, "hashDigest", "hex");
D(output, "hashDigestLength", 20);
D(output, "strictModuleExceptionHandling", false);
const optimistic = v => v || v === undefined;
F(
output.environment,
"arrowFunction",
() => tp && optimistic(tp.arrowFunction)
);
F(output.environment, "const", () => tp && optimistic(tp.const));
F(
output.environment,
"destructuring",
() => tp && optimistic(tp.destructuring)
);
F(output.environment, "forOf", () => tp && optimistic(tp.forOf));
F(output.environment, "bigIntLiteral", () => tp && tp.bigIntLiteral);
F(output.environment, "dynamicImport", () => tp && tp.dynamicImport);
F(output.environment, "module", () => tp && tp.module);
const { trustedTypes } = output;
if (trustedTypes) {
F(
trustedTypes,
"policyName",
() =>
output.uniqueName.replace(/[^a-zA-Z0-9\-#=_/@.%]+/g, "_") || "webpack"
);
}
/**
* @param {function(EntryDescription): void} fn iterator
* @returns {void}
*/
const forEachEntry = fn => {
for (const name of Object.keys(entry)) {
fn(entry[name]);
}
};
A(output, "enabledLibraryTypes", () => {
const enabledLibraryTypes = [];
if (output.library) {
enabledLibraryTypes.push(output.library.type);
}
forEachEntry(desc => {
if (desc.library) {
enabledLibraryTypes.push(desc.library.type);
}
});
return enabledLibraryTypes;
});
A(output, "enabledChunkLoadingTypes", () => {
const enabledChunkLoadingTypes = new Set();
if (output.chunkLoading) {
enabledChunkLoadingTypes.add(output.chunkLoading);
}
if (output.workerChunkLoading) {
enabledChunkLoadingTypes.add(output.workerChunkLoading);
}
forEachEntry(desc => {
if (desc.chunkLoading) {
enabledChunkLoadingTypes.add(desc.chunkLoading);
}
});
return Array.from(enabledChunkLoadingTypes);
});
A(output, "enabledWasmLoadingTypes", () => {
const enabledWasmLoadingTypes = new Set();
if (output.wasmLoading) {
enabledWasmLoadingTypes.add(output.wasmLoading);
}
if (output.workerWasmLoading) {
enabledWasmLoadingTypes.add(output.workerWasmLoading);
}
forEachEntry(desc => {
if (desc.wasmLoading) {
enabledWasmLoadingTypes.add(desc.wasmLoading);
}
});
return Array.from(enabledWasmLoadingTypes);
});
};
/**
* @param {ExternalsPresets} externalsPresets options
* @param {Object} options options
* @param {TargetProperties | false} options.targetProperties target properties
* @returns {void}
*/
const applyExternalsPresetsDefaults = (
externalsPresets,
{ targetProperties }
) => {
D(externalsPresets, "web", targetProperties && targetProperties.web);
D(externalsPresets, "node", targetProperties && targetProperties.node);
D(externalsPresets, "nwjs", targetProperties && targetProperties.nwjs);
D(
externalsPresets,
"electron",
targetProperties && targetProperties.electron
);
D(
externalsPresets,
"electronMain",
targetProperties &&
targetProperties.electron &&
targetProperties.electronMain
);
D(
externalsPresets,
"electronPreload",
targetProperties &&
targetProperties.electron &&
targetProperties.electronPreload
);
D(
externalsPresets,
"electronRenderer",
targetProperties &&
targetProperties.electron &&
targetProperties.electronRenderer
);
};
/**
* @param {Loader} loader options
* @param {Object} options options
* @param {TargetProperties | false} options.targetProperties target properties
* @returns {void}
*/
const applyLoaderDefaults = (loader, { targetProperties }) => {
F(loader, "target", () => {
if (targetProperties) {
if (targetProperties.electron) {
if (targetProperties.electronMain) return "electron-main";
if (targetProperties.electronPreload) return "electron-preload";
if (targetProperties.electronRenderer) return "electron-renderer";
return "electron";
}
if (targetProperties.nwjs) return "nwjs";
if (targetProperties.node) return "node";
if (targetProperties.web) return "web";
}
});
};
/**
* @param {WebpackNode} node options
* @param {Object} options options
* @param {TargetProperties | false} options.targetProperties target properties
* @returns {void}
*/
const applyNodeDefaults = (node, { targetProperties }) => {
if (node === false) return;
F(node, "global", () => {
if (targetProperties && targetProperties.global) return false;
return true;
});
F(node, "__filename", () => {
if (targetProperties && targetProperties.node) return "eval-only";
return "mock";
});
F(node, "__dirname", () => {
if (targetProperties && targetProperties.node) return "eval-only";
return "mock";
});
};
/**
* @param {Performance} performance options
* @param {Object} options options
* @param {boolean} options.production is production
* @returns {void}
*/
const applyPerformanceDefaults = (performance, { production }) => {
if (performance === false) return;
D(performance, "maxAssetSize", 250000);
D(performance, "maxEntrypointSize", 250000);
F(performance, "hints", () => (production ? "warning" : false));
};
/**
* @param {Optimization} optimization options
* @param {Object} options options
* @param {boolean} options.production is production
* @param {boolean} options.development is development
* @param {boolean} options.records using records
* @returns {void}
*/
const applyOptimizationDefaults = (
optimization,
{ production, development, records }
) => {
D(optimization, "removeAvailableModules", false);
D(optimization, "removeEmptyChunks", true);
D(optimization, "mergeDuplicateChunks", true);
D(optimization, "flagIncludedChunks", production);
F(optimization, "moduleIds", () => {
if (production) return "deterministic";
if (development) return "named";
return "natural";
});
F(optimization, "chunkIds", () => {
if (production) return "deterministic";
if (development) return "named";
return "natural";
});
F(optimization, "sideEffects", () => (production ? true : "flag"));
D(optimization, "providedExports", true);
D(optimization, "usedExports", production);
D(optimization, "innerGraph", production);
D(optimization, "mangleExports", production);
D(optimization, "concatenateModules", production);
D(optimization, "runtimeChunk", false);
D(optimization, "emitOnErrors", !production);
D(optimization, "checkWasmTypes", production);
D(optimization, "mangleWasmImports", false);
D(optimization, "portableRecords", records);
D(optimization, "realContentHash", production);
D(optimization, "minimize", production);
A(optimization, "minimizer", () => [
{
apply: compiler => {
// Lazy load the Terser plugin
const TerserPlugin = require("terser-webpack-plugin");
new TerserPlugin({
terserOptions: {
compress: {
passes: 2
}
}
}).apply(compiler);
}
}
]);
F(optimization, "nodeEnv", () => {
if (production) return "production";
if (development) return "development";
return false;
});
const { splitChunks } = optimization;
if (splitChunks) {
A(splitChunks, "defaultSizeTypes", () => ["javascript", "unknown"]);
D(splitChunks, "hidePathInfo", production);
D(splitChunks, "chunks", "async");
D(splitChunks, "usedExports", optimization.usedExports === true);
D(splitChunks, "minChunks", 1);
F(splitChunks, "minSize", () => (production ? 20000 : 10000));
F(splitChunks, "minRemainingSize", () => (development ? 0 : undefined));
F(splitChunks, "enforceSizeThreshold", () => (production ? 50000 : 30000));
F(splitChunks, "maxAsyncRequests", () => (production ? 30 : Infinity));
F(splitChunks, "maxInitialRequests", () => (production ? 30 : Infinity));
D(splitChunks, "automaticNameDelimiter", "-");
const { cacheGroups } = splitChunks;
F(cacheGroups, "default", () => ({
idHint: "",
reuseExistingChunk: true,
minChunks: 2,
priority: -20
}));
F(cacheGroups, "defaultVendors", () => ({
idHint: "vendors",
reuseExistingChunk: true,
test: NODE_MODULES_REGEXP,
priority: -10
}));
}
};
/**
* @param {Object} options options
* @param {boolean} options.cache is cache enable
* @param {string} options.context build context
* @param {TargetProperties | false} options.targetProperties target properties
* @param {Mode} options.mode mode
* @returns {ResolveOptions} resolve options
*/
const getResolveDefaults = ({ cache, context, targetProperties, mode }) => {
/** @type {string[]} */
const conditions = ["webpack"];
conditions.push(mode === "development" ? "development" : "production");
if (targetProperties) {
if (targetProperties.webworker) conditions.push("worker");
if (targetProperties.node) conditions.push("node");
if (targetProperties.web) conditions.push("browser");
if (targetProperties.electron) conditions.push("electron");
if (targetProperties.nwjs) conditions.push("nwjs");
}
const jsExtensions = [".js", ".json", ".wasm"];
const tp = targetProperties;
const browserField =
tp && tp.web && (!tp.node || (tp.electron && tp.electronRenderer));
/** @type {function(): ResolveOptions} */
const cjsDeps = () => ({
aliasFields: browserField ? ["browser"] : [],
mainFields: browserField ? ["browser", "module", "..."] : ["module", "..."],
conditionNames: ["require", "module", "..."],
extensions: [...jsExtensions]
});
/** @type {function(): ResolveOptions} */
const esmDeps = () => ({
aliasFields: browserField ? ["browser"] : [],
mainFields: browserField ? ["browser", "module", "..."] : ["module", "..."],
conditionNames: ["import", "module", "..."],
extensions: [...jsExtensions]
});
/** @type {ResolveOptions} */
const resolveOptions = {
cache,
modules: ["node_modules"],
conditionNames: conditions,
mainFiles: ["index"],
extensions: [],
aliasFields: [],
exportsFields: ["exports"],
roots: [context],
mainFields: ["main"],
byDependency: {
wasm: esmDeps(),
esm: esmDeps(),
loaderImport: esmDeps(),
url: {
preferRelative: true
},
worker: {
...esmDeps(),
preferRelative: true
},
commonjs: cjsDeps(),
amd: cjsDeps(),
// for backward-compat: loadModule
loader: cjsDeps(),
// for backward-compat: Custom Dependency
unknown: cjsDeps(),
// for backward-compat: getResolve without dependencyType
undefined: cjsDeps()
}
};
return resolveOptions;
};
/**
* @param {Object} options options
* @param {boolean} options.cache is cache enable
* @returns {ResolveOptions} resolve options
*/
const getResolveLoaderDefaults = ({ cache }) => {
/** @type {ResolveOptions} */
const resolveOptions = {
cache,
conditionNames: ["loader", "require", "node"],
exportsFields: ["exports"],
mainFields: ["loader", "main"],
extensions: [".js"],
mainFiles: ["index"]
};
return resolveOptions;
};
/**
* @param {InfrastructureLogging} infrastructureLogging options
* @returns {void}
*/
const applyInfrastructureLoggingDefaults = infrastructureLogging => {
F(infrastructureLogging, "stream", () => process.stderr);
const tty =
/** @type {any} */ (infrastructureLogging.stream).isTTY &&
process.env.TERM !== "dumb";
D(infrastructureLogging, "level", "info");
D(infrastructureLogging, "debug", false);
D(infrastructureLogging, "colors", tty);
D(infrastructureLogging, "appendOnly", !tty);
};
exports.applyWebpackOptionsBaseDefaults = applyWebpackOptionsBaseDefaults;
exports.applyWebpackOptionsDefaults = applyWebpackOptionsDefaults;