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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const crypto = require("crypto");
const SortableSet = require("../util/SortableSet");
const GraphHelpers = require("../GraphHelpers");
const { isSubset } = require("../util/SetHelpers");
const deterministicGrouping = require("../util/deterministicGrouping");
const MinMaxSizeWarning = require("./MinMaxSizeWarning");
const contextify = require("../util/identifier").contextify;
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Module")} Module */
/** @typedef {import("../util/deterministicGrouping").Options<Module>} DeterministicGroupingOptionsForModule */
/** @typedef {import("../util/deterministicGrouping").GroupedItems<Module>} DeterministicGroupingGroupedItemsForModule */
const deterministicGroupingForModules = /** @type {function(DeterministicGroupingOptionsForModule): DeterministicGroupingGroupedItemsForModule[]} */ (deterministicGrouping);
const hashFilename = name => {
return crypto
.createHash("md4")
.update(name)
.digest("hex")
.slice(0, 8);
};
const sortByIdentifier = (a, b) => {
if (a.identifier() > b.identifier()) return 1;
if (a.identifier() < b.identifier()) return -1;
return 0;
};
const getRequests = chunk => {
let requests = 0;
for (const chunkGroup of chunk.groupsIterable) {
requests = Math.max(requests, chunkGroup.chunks.length);
}
return requests;
};
const getModulesSize = modules => {
let sum = 0;
for (const m of modules) {
sum += m.size();
}
return sum;
};
/**
* @template T
* @param {Set<T>} a set
* @param {Set<T>} b other set
* @returns {boolean} true if at least one item of a is in b
*/
const isOverlap = (a, b) => {
for (const item of a) {
if (b.has(item)) return true;
}
return false;
};
const compareEntries = (a, b) => {
// 1. by priority
const diffPriority = a.cacheGroup.priority - b.cacheGroup.priority;
if (diffPriority) return diffPriority;
// 2. by number of chunks
const diffCount = a.chunks.size - b.chunks.size;
if (diffCount) return diffCount;
// 3. by size reduction
const aSizeReduce = a.size * (a.chunks.size - 1);
const bSizeReduce = b.size * (b.chunks.size - 1);
const diffSizeReduce = aSizeReduce - bSizeReduce;
if (diffSizeReduce) return diffSizeReduce;
// 4. by number of modules (to be able to compare by identifier)
const modulesA = a.modules;
const modulesB = b.modules;
const diff = modulesA.size - modulesB.size;
if (diff) return diff;
// 5. by module identifiers
modulesA.sort();
modulesB.sort();
const aI = modulesA[Symbol.iterator]();
const bI = modulesB[Symbol.iterator]();
// eslint-disable-next-line no-constant-condition
while (true) {
const aItem = aI.next();
const bItem = bI.next();
if (aItem.done) return 0;
const aModuleIdentifier = aItem.value.identifier();
const bModuleIdentifier = bItem.value.identifier();
if (aModuleIdentifier > bModuleIdentifier) return -1;
if (aModuleIdentifier < bModuleIdentifier) return 1;
}
};
const compareNumbers = (a, b) => a - b;
const INITIAL_CHUNK_FILTER = chunk => chunk.canBeInitial();
const ASYNC_CHUNK_FILTER = chunk => !chunk.canBeInitial();
const ALL_CHUNK_FILTER = chunk => true;
module.exports = class SplitChunksPlugin {
constructor(options) {
this.options = SplitChunksPlugin.normalizeOptions(options);
}
static normalizeOptions(options = {}) {
return {
chunksFilter: SplitChunksPlugin.normalizeChunksFilter(
options.chunks || "all"
),
minSize: options.minSize || 0,
maxSize: options.maxSize || 0,
minChunks: options.minChunks || 1,
maxAsyncRequests: options.maxAsyncRequests || 1,
maxInitialRequests: options.maxInitialRequests || 1,
hidePathInfo: options.hidePathInfo || false,
filename: options.filename || undefined,
getCacheGroups: SplitChunksPlugin.normalizeCacheGroups({
cacheGroups: options.cacheGroups,
name: options.name,
automaticNameDelimiter: options.automaticNameDelimiter,
automaticNameMaxLength: options.automaticNameMaxLength
}),
automaticNameDelimiter: options.automaticNameDelimiter,
automaticNameMaxLength: options.automaticNameMaxLength || 109,
fallbackCacheGroup: SplitChunksPlugin.normalizeFallbackCacheGroup(
options.fallbackCacheGroup || {},
options
)
};
}
static normalizeName({
name,
automaticNameDelimiter,
automaticNamePrefix,
automaticNameMaxLength
}) {
if (name === true) {
/** @type {WeakMap<Chunk[], Record<string, string>>} */
const cache = new WeakMap();
const fn = (module, chunks, cacheGroup) => {
let cacheEntry = cache.get(chunks);
if (cacheEntry === undefined) {
cacheEntry = {};
cache.set(chunks, cacheEntry);
} else if (cacheGroup in cacheEntry) {
return cacheEntry[cacheGroup];
}
const names = chunks.map(c => c.name);
if (!names.every(Boolean)) {
cacheEntry[cacheGroup] = undefined;
return;
}
names.sort();
const prefix =
typeof automaticNamePrefix === "string"
? automaticNamePrefix
: cacheGroup;
const namePrefix = prefix ? prefix + automaticNameDelimiter : "";
let name = namePrefix + names.join(automaticNameDelimiter);
// Filenames and paths can't be too long otherwise an
// ENAMETOOLONG error is raised. If the generated name if too
// long, it is truncated and a hash is appended. The limit has
// been set to 109 to prevent `[name].[chunkhash].[ext]` from
// generating a 256+ character string.
if (name.length > automaticNameMaxLength) {
const hashedFilename = hashFilename(name);
const sliceLength =
automaticNameMaxLength -
(automaticNameDelimiter.length + hashedFilename.length);
name =
name.slice(0, sliceLength) +
automaticNameDelimiter +
hashedFilename;
}
cacheEntry[cacheGroup] = name;
return name;
};
return fn;
}
if (typeof name === "string") {
const fn = () => {
return name;
};
return fn;
}
if (typeof name === "function") return name;
}
static normalizeChunksFilter(chunks) {
if (chunks === "initial") {
return INITIAL_CHUNK_FILTER;
}
if (chunks === "async") {
return ASYNC_CHUNK_FILTER;
}
if (chunks === "all") {
return ALL_CHUNK_FILTER;
}
if (typeof chunks === "function") return chunks;
}
static normalizeFallbackCacheGroup(
{
minSize = undefined,
maxSize = undefined,
automaticNameDelimiter = undefined
},
{
minSize: defaultMinSize = undefined,
maxSize: defaultMaxSize = undefined,
automaticNameDelimiter: defaultAutomaticNameDelimiter = undefined
}
) {
return {
minSize: typeof minSize === "number" ? minSize : defaultMinSize || 0,
maxSize: typeof maxSize === "number" ? maxSize : defaultMaxSize || 0,
automaticNameDelimiter:
automaticNameDelimiter || defaultAutomaticNameDelimiter || "~"
};
}
static normalizeCacheGroups({
cacheGroups,
name,
automaticNameDelimiter,
automaticNameMaxLength
}) {
if (typeof cacheGroups === "function") {
// TODO webpack 5 remove this
if (cacheGroups.length !== 1) {
return module => cacheGroups(module, module.getChunks());
}
return cacheGroups;
}
if (cacheGroups && typeof cacheGroups === "object") {
const fn = module => {
let results;
for (const key of Object.keys(cacheGroups)) {
let option = cacheGroups[key];
if (option === false) continue;
if (option instanceof RegExp || typeof option === "string") {
option = {
test: option
};
}
if (typeof option === "function") {
let result = option(module);
if (result) {
if (results === undefined) results = [];
for (const r of Array.isArray(result) ? result : [result]) {
const result = Object.assign({ key }, r);
if (result.name) result.getName = () => result.name;
if (result.chunks) {
result.chunksFilter = SplitChunksPlugin.normalizeChunksFilter(
result.chunks
);
}
results.push(result);
}
}
} else if (SplitChunksPlugin.checkTest(option.test, module)) {
if (results === undefined) results = [];
results.push({
key: key,
priority: option.priority,
getName:
SplitChunksPlugin.normalizeName({
name: option.name || name,
automaticNameDelimiter:
typeof option.automaticNameDelimiter === "string"
? option.automaticNameDelimiter
: automaticNameDelimiter,
automaticNamePrefix: option.automaticNamePrefix,
automaticNameMaxLength:
option.automaticNameMaxLength || automaticNameMaxLength
}) || (() => {}),
chunksFilter: SplitChunksPlugin.normalizeChunksFilter(
option.chunks
),
enforce: option.enforce,
minSize: option.minSize,
maxSize: option.maxSize,
minChunks: option.minChunks,
maxAsyncRequests: option.maxAsyncRequests,
maxInitialRequests: option.maxInitialRequests,
filename: option.filename,
reuseExistingChunk: option.reuseExistingChunk
});
}
}
return results;
};
return fn;
}
const fn = () => {};
return fn;
}
static checkTest(test, module) {
if (test === undefined) return true;
if (typeof test === "function") {
if (test.length !== 1) {
return test(module, module.getChunks());
}
return test(module);
}
if (typeof test === "boolean") return test;
if (typeof test === "string") {
if (
module.nameForCondition &&
module.nameForCondition().startsWith(test)
) {
return true;
}
for (const chunk of module.chunksIterable) {
if (chunk.name && chunk.name.startsWith(test)) {
return true;
}
}
return false;
}
if (test instanceof RegExp) {
if (module.nameForCondition && test.test(module.nameForCondition())) {
return true;
}
for (const chunk of module.chunksIterable) {
if (chunk.name && test.test(chunk.name)) {
return true;
}
}
return false;
}
return false;
}
/**
* @param {Compiler} compiler webpack compiler
* @returns {void}
*/
apply(compiler) {
compiler.hooks.thisCompilation.tap("SplitChunksPlugin", compilation => {
let alreadyOptimized = false;
compilation.hooks.unseal.tap("SplitChunksPlugin", () => {
alreadyOptimized = false;
});
compilation.hooks.optimizeChunksAdvanced.tap(
"SplitChunksPlugin",
chunks => {
if (alreadyOptimized) return;
alreadyOptimized = true;
// Give each selected chunk an index (to create strings from chunks)
const indexMap = new Map();
let index = 1;
for (const chunk of chunks) {
indexMap.set(chunk, index++);
}
const getKey = chunks => {
return Array.from(chunks, c => indexMap.get(c))
.sort(compareNumbers)
.join();
};
/** @type {Map<string, Set<Chunk>>} */
const chunkSetsInGraph = new Map();
for (const module of compilation.modules) {
const chunksKey = getKey(module.chunksIterable);
if (!chunkSetsInGraph.has(chunksKey)) {
chunkSetsInGraph.set(chunksKey, new Set(module.chunksIterable));
}
}
// group these set of chunks by count
// to allow to check less sets via isSubset
// (only smaller sets can be subset)
/** @type {Map<number, Array<Set<Chunk>>>} */
const chunkSetsByCount = new Map();
for (const chunksSet of chunkSetsInGraph.values()) {
const count = chunksSet.size;
let array = chunkSetsByCount.get(count);
if (array === undefined) {
array = [];
chunkSetsByCount.set(count, array);
}
array.push(chunksSet);
}
// Create a list of possible combinations
const combinationsCache = new Map(); // Map<string, Set<Chunk>[]>
const getCombinations = key => {
const chunksSet = chunkSetsInGraph.get(key);
var array = [chunksSet];
if (chunksSet.size > 1) {
for (const [count, setArray] of chunkSetsByCount) {
// "equal" is not needed because they would have been merge in the first step
if (count < chunksSet.size) {
for (const set of setArray) {
if (isSubset(chunksSet, set)) {
array.push(set);
}
}
}
}
}
return array;
};
/**
* @typedef {Object} SelectedChunksResult
* @property {Chunk[]} chunks the list of chunks
* @property {string} key a key of the list
*/
/**
* @typedef {function(Chunk): boolean} ChunkFilterFunction
*/
/** @type {WeakMap<Set<Chunk>, WeakMap<ChunkFilterFunction, SelectedChunksResult>>} */
const selectedChunksCacheByChunksSet = new WeakMap();
/**
* get list and key by applying the filter function to the list
* It is cached for performance reasons
* @param {Set<Chunk>} chunks list of chunks
* @param {ChunkFilterFunction} chunkFilter filter function for chunks
* @returns {SelectedChunksResult} list and key
*/
const getSelectedChunks = (chunks, chunkFilter) => {
let entry = selectedChunksCacheByChunksSet.get(chunks);
if (entry === undefined) {
entry = new WeakMap();
selectedChunksCacheByChunksSet.set(chunks, entry);
}
/** @type {SelectedChunksResult} */
let entry2 = entry.get(chunkFilter);
if (entry2 === undefined) {
/** @type {Chunk[]} */
const selectedChunks = [];
for (const chunk of chunks) {
if (chunkFilter(chunk)) selectedChunks.push(chunk);
}
entry2 = {
chunks: selectedChunks,
key: getKey(selectedChunks)
};
entry.set(chunkFilter, entry2);
}
return entry2;
};
/**
* @typedef {Object} ChunksInfoItem
* @property {SortableSet} modules
* @property {TODO} cacheGroup
* @property {string} name
* @property {boolean} validateSize
* @property {number} size
* @property {Set<Chunk>} chunks
* @property {Set<Chunk>} reuseableChunks
* @property {Set<string>} chunksKeys
*/
// Map a list of chunks to a list of modules
// For the key the chunk "index" is used, the value is a SortableSet of modules
/** @type {Map<string, ChunksInfoItem>} */
const chunksInfoMap = new Map();
/**
* @param {TODO} cacheGroup the current cache group
* @param {Chunk[]} selectedChunks chunks selected for this module
* @param {string} selectedChunksKey a key of selectedChunks
* @param {Module} module the current module
* @returns {void}
*/
const addModuleToChunksInfoMap = (
cacheGroup,
selectedChunks,
selectedChunksKey,
module
) => {
// Break if minimum number of chunks is not reached
if (selectedChunks.length < cacheGroup.minChunks) return;
// Determine name for split chunk
const name = cacheGroup.getName(
module,
selectedChunks,
cacheGroup.key
);
// Create key for maps
// When it has a name we use the name as key
// Elsewise we create the key from chunks and cache group key
// This automatically merges equal names
const key =
cacheGroup.key +
(name ? ` name:${name}` : ` chunks:${selectedChunksKey}`);
// Add module to maps
let info = chunksInfoMap.get(key);
if (info === undefined) {
chunksInfoMap.set(
key,
(info = {
modules: new SortableSet(undefined, sortByIdentifier),
cacheGroup,
name,
validateSize: cacheGroup.minSize > 0,
size: 0,
chunks: new Set(),
reuseableChunks: new Set(),
chunksKeys: new Set()
})
);
}
info.modules.add(module);
if (info.validateSize) {
info.size += module.size();
}
if (!info.chunksKeys.has(selectedChunksKey)) {
info.chunksKeys.add(selectedChunksKey);
for (const chunk of selectedChunks) {
info.chunks.add(chunk);
}
}
};
// Walk through all modules
for (const module of compilation.modules) {
// Get cache group
let cacheGroups = this.options.getCacheGroups(module);
if (!Array.isArray(cacheGroups) || cacheGroups.length === 0) {
continue;
}
// Prepare some values
const chunksKey = getKey(module.chunksIterable);
let combs = combinationsCache.get(chunksKey);
if (combs === undefined) {
combs = getCombinations(chunksKey);
combinationsCache.set(chunksKey, combs);
}
for (const cacheGroupSource of cacheGroups) {
const cacheGroup = {
key: cacheGroupSource.key,
priority: cacheGroupSource.priority || 0,
chunksFilter:
cacheGroupSource.chunksFilter || this.options.chunksFilter,
minSize:
cacheGroupSource.minSize !== undefined
? cacheGroupSource.minSize
: cacheGroupSource.enforce
? 0
: this.options.minSize,
minSizeForMaxSize:
cacheGroupSource.minSize !== undefined
? cacheGroupSource.minSize
: this.options.minSize,
maxSize:
cacheGroupSource.maxSize !== undefined
? cacheGroupSource.maxSize
: cacheGroupSource.enforce
? 0
: this.options.maxSize,
minChunks:
cacheGroupSource.minChunks !== undefined
? cacheGroupSource.minChunks
: cacheGroupSource.enforce
? 1
: this.options.minChunks,
maxAsyncRequests:
cacheGroupSource.maxAsyncRequests !== undefined
? cacheGroupSource.maxAsyncRequests
: cacheGroupSource.enforce
? Infinity
: this.options.maxAsyncRequests,
maxInitialRequests:
cacheGroupSource.maxInitialRequests !== undefined
? cacheGroupSource.maxInitialRequests
: cacheGroupSource.enforce
? Infinity
: this.options.maxInitialRequests,
getName:
cacheGroupSource.getName !== undefined
? cacheGroupSource.getName
: this.options.getName,
filename:
cacheGroupSource.filename !== undefined
? cacheGroupSource.filename
: this.options.filename,
automaticNameDelimiter:
cacheGroupSource.automaticNameDelimiter !== undefined
? cacheGroupSource.automaticNameDelimiter
: this.options.automaticNameDelimiter,
reuseExistingChunk: cacheGroupSource.reuseExistingChunk
};
// For all combination of chunk selection
for (const chunkCombination of combs) {
// Break if minimum number of chunks is not reached
if (chunkCombination.size < cacheGroup.minChunks) continue;
// Select chunks by configuration
const {
chunks: selectedChunks,
key: selectedChunksKey
} = getSelectedChunks(
chunkCombination,
cacheGroup.chunksFilter
);
addModuleToChunksInfoMap(
cacheGroup,
selectedChunks,
selectedChunksKey,
module
);
}
}
}
// Filter items were size < minSize
for (const pair of chunksInfoMap) {
const info = pair[1];
if (info.validateSize && info.size < info.cacheGroup.minSize) {
chunksInfoMap.delete(pair[0]);
}
}
/** @type {Map<Chunk, {minSize: number, maxSize: number, automaticNameDelimiter: string, keys: string[]}>} */
const maxSizeQueueMap = new Map();
while (chunksInfoMap.size > 0) {
// Find best matching entry
let bestEntryKey;
let bestEntry;
for (const pair of chunksInfoMap) {
const key = pair[0];
const info = pair[1];
if (bestEntry === undefined) {
bestEntry = info;
bestEntryKey = key;
} else if (compareEntries(bestEntry, info) < 0) {
bestEntry = info;
bestEntryKey = key;
}
}
const item = bestEntry;
chunksInfoMap.delete(bestEntryKey);
let chunkName = item.name;
// Variable for the new chunk (lazy created)
/** @type {Chunk} */
let newChunk;
// When no chunk name, check if we can reuse a chunk instead of creating a new one
let isReused = false;
if (item.cacheGroup.reuseExistingChunk) {
outer: for (const chunk of item.chunks) {
if (chunk.getNumberOfModules() !== item.modules.size) continue;
if (chunk.hasEntryModule()) continue;
for (const module of item.modules) {
if (!chunk.containsModule(module)) continue outer;
}
if (!newChunk || !newChunk.name) {
newChunk = chunk;
} else if (
chunk.name &&
chunk.name.length < newChunk.name.length
) {
newChunk = chunk;
} else if (
chunk.name &&
chunk.name.length === newChunk.name.length &&
chunk.name < newChunk.name
) {
newChunk = chunk;
}
chunkName = undefined;
isReused = true;
}
}
// Check if maxRequests condition can be fulfilled
const usedChunks = Array.from(item.chunks).filter(chunk => {
// skip if we address ourself
return (
(!chunkName || chunk.name !== chunkName) && chunk !== newChunk
);
});
// Skip when no chunk selected
if (usedChunks.length === 0) continue;
let validChunks = usedChunks;
if (
Number.isFinite(item.cacheGroup.maxInitialRequests) ||
Number.isFinite(item.cacheGroup.maxAsyncRequests)
) {
validChunks = validChunks.filter(chunk => {
// respect max requests when not enforced
const maxRequests = chunk.isOnlyInitial()
? item.cacheGroup.maxInitialRequests
: chunk.canBeInitial()
? Math.min(
item.cacheGroup.maxInitialRequests,
item.cacheGroup.maxAsyncRequests
)
: item.cacheGroup.maxAsyncRequests;
return (
!isFinite(maxRequests) || getRequests(chunk) < maxRequests
);
});
}
validChunks = validChunks.filter(chunk => {
for (const module of item.modules) {
if (chunk.containsModule(module)) return true;
}
return false;
});
if (validChunks.length < usedChunks.length) {
if (validChunks.length >= item.cacheGroup.minChunks) {
for (const module of item.modules) {
addModuleToChunksInfoMap(
item.cacheGroup,
validChunks,
getKey(validChunks),
module
);
}
}
continue;
}
// Create the new chunk if not reusing one
if (!isReused) {
newChunk = compilation.addChunk(chunkName);
}
// Walk through all chunks
for (const chunk of usedChunks) {
// Add graph connections for splitted chunk
chunk.split(newChunk);
}
// Add a note to the chunk
newChunk.chunkReason = isReused
? "reused as split chunk"
: "split chunk";
if (item.cacheGroup.key) {
newChunk.chunkReason += ` (cache group: ${item.cacheGroup.key})`;
}
if (chunkName) {
newChunk.chunkReason += ` (name: ${chunkName})`;
// If the chosen name is already an entry point we remove the entry point
const entrypoint = compilation.entrypoints.get(chunkName);
if (entrypoint) {
compilation.entrypoints.delete(chunkName);
entrypoint.remove();
newChunk.entryModule = undefined;
}
}
if (item.cacheGroup.filename) {
if (!newChunk.isOnlyInitial()) {
throw new Error(
"SplitChunksPlugin: You are trying to set a filename for a chunk which is (also) loaded on demand. " +
"The runtime can only handle loading of chunks which match the chunkFilename schema. " +
"Using a custom filename would fail at runtime. " +
`(cache group: ${item.cacheGroup.key})`
);
}
newChunk.filenameTemplate = item.cacheGroup.filename;
}
if (!isReused) {
// Add all modules to the new chunk
for (const module of item.modules) {
if (typeof module.chunkCondition === "function") {
if (!module.chunkCondition(newChunk)) continue;
}
// Add module to new chunk
GraphHelpers.connectChunkAndModule(newChunk, module);
// Remove module from used chunks
for (const chunk of usedChunks) {
chunk.removeModule(module);
module.rewriteChunkInReasons(chunk, [newChunk]);
}
}
} else {
// Remove all modules from used chunks
for (const module of item.modules) {
for (const chunk of usedChunks) {
chunk.removeModule(module);
module.rewriteChunkInReasons(chunk, [newChunk]);
}
}
}
if (item.cacheGroup.maxSize > 0) {
const oldMaxSizeSettings = maxSizeQueueMap.get(newChunk);
maxSizeQueueMap.set(newChunk, {
minSize: Math.max(
oldMaxSizeSettings ? oldMaxSizeSettings.minSize : 0,
item.cacheGroup.minSizeForMaxSize
),
maxSize: Math.min(
oldMaxSizeSettings ? oldMaxSizeSettings.maxSize : Infinity,
item.cacheGroup.maxSize
),
automaticNameDelimiter: item.cacheGroup.automaticNameDelimiter,
keys: oldMaxSizeSettings
? oldMaxSizeSettings.keys.concat(item.cacheGroup.key)
: [item.cacheGroup.key]
});
}
// remove all modules from other entries and update size
for (const [key, info] of chunksInfoMap) {
if (isOverlap(info.chunks, item.chunks)) {
if (info.validateSize) {
// update modules and total size
// may remove it from the map when < minSize
const oldSize = info.modules.size;
for (const module of item.modules) {
info.modules.delete(module);
}
if (info.modules.size === 0) {
chunksInfoMap.delete(key);
continue;
}
if (info.modules.size !== oldSize) {
info.size = getModulesSize(info.modules);
if (info.size < info.cacheGroup.minSize) {
chunksInfoMap.delete(key);
}
}
} else {
// only update the modules
for (const module of item.modules) {
info.modules.delete(module);
}
if (info.modules.size === 0) {
chunksInfoMap.delete(key);
}
}
}
}
}
const incorrectMinMaxSizeSet = new Set();
// Make sure that maxSize is fulfilled
for (const chunk of compilation.chunks.slice()) {
const { minSize, maxSize, automaticNameDelimiter, keys } =
maxSizeQueueMap.get(chunk) || this.options.fallbackCacheGroup;
if (!maxSize) continue;
if (minSize > maxSize) {
const warningKey = `${keys && keys.join()} ${minSize} ${maxSize}`;
if (!incorrectMinMaxSizeSet.has(warningKey)) {
incorrectMinMaxSizeSet.add(warningKey);
compilation.warnings.push(
new MinMaxSizeWarning(keys, minSize, maxSize)
);
}
}
const results = deterministicGroupingForModules({
maxSize: Math.max(minSize, maxSize),
minSize,
items: chunk.modulesIterable,
getKey(module) {
const ident = contextify(
compilation.options.context,
module.identifier()
);
const name = module.nameForCondition
? contextify(
compilation.options.context,
module.nameForCondition()
)
: ident.replace(/^.*!|\?[^?!]*$/g, "");
const fullKey =
name + automaticNameDelimiter + hashFilename(ident);
return fullKey.replace(/[\\/?]/g, "_");
},
getSize(module) {
return module.size();
}
});
results.sort((a, b) => {
if (a.key < b.key) return -1;
if (a.key > b.key) return 1;
return 0;
});
for (let i = 0; i < results.length; i++) {
const group = results[i];
const key = this.options.hidePathInfo
? hashFilename(group.key)
: group.key;
let name = chunk.name
? chunk.name + automaticNameDelimiter + key
: null;
if (name && name.length > 100) {
name =
name.slice(0, 100) +
automaticNameDelimiter +
hashFilename(name);
}
let newPart;
if (i !== results.length - 1) {
newPart = compilation.addChunk(name);
chunk.split(newPart);
newPart.chunkReason = chunk.chunkReason;
// Add all modules to the new chunk
for (const module of group.items) {
if (typeof module.chunkCondition === "function") {
if (!module.chunkCondition(newPart)) continue;
}
// Add module to new chunk
GraphHelpers.connectChunkAndModule(newPart, module);
// Remove module from used chunks
chunk.removeModule(module);
module.rewriteChunkInReasons(chunk, [newPart]);
}
} else {
// change the chunk to be a part
newPart = chunk;
chunk.name = name;
}
}
}
}
);
});
}
};