mirror of https://github.com/webpack/webpack.git
1315 lines
42 KiB
JavaScript
1315 lines
42 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const AsyncDependencyToInitialChunkError = require("./AsyncDependencyToInitialChunkError");
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const { connectChunkGroupParentAndChild } = require("./GraphHelpers");
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const ModuleGraphConnection = require("./ModuleGraphConnection");
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const { getEntryRuntime, mergeRuntime } = require("./util/runtime");
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/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
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/** @typedef {import("./Chunk")} Chunk */
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/** @typedef {import("./ChunkGroup")} ChunkGroup */
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/** @typedef {import("./Compilation")} Compilation */
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/** @typedef {import("./DependenciesBlock")} DependenciesBlock */
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/** @typedef {import("./Dependency")} Dependency */
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/** @typedef {import("./Entrypoint")} Entrypoint */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./ModuleGraphConnection").ConnectionState} ConnectionState */
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/** @typedef {import("./logging/Logger").Logger} Logger */
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/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
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/**
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* @typedef {Object} QueueItem
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* @property {number} action
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* @property {DependenciesBlock} block
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* @property {Module} module
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* @property {Chunk} chunk
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* @property {ChunkGroup} chunkGroup
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* @property {ChunkGroupInfo} chunkGroupInfo
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*/
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/** @typedef {Set<Module> & { plus: Set<Module> }} ModuleSetPlus */
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/**
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* @typedef {Object} ChunkGroupInfo
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* @property {ChunkGroup} chunkGroup the chunk group
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* @property {RuntimeSpec} runtime the runtimes
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* @property {ModuleSetPlus} minAvailableModules current minimal set of modules available at this point
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* @property {boolean} minAvailableModulesOwned true, if minAvailableModules is owned and can be modified
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* @property {ModuleSetPlus[]} availableModulesToBeMerged enqueued updates to the minimal set of available modules
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* @property {Set<Module>=} skippedItems modules that were skipped because module is already available in parent chunks (need to reconsider when minAvailableModules is shrinking)
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* @property {Set<[Module, ModuleGraphConnection[]]>=} skippedModuleConnections referenced modules that where skipped because they were not active in this runtime
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* @property {ModuleSetPlus} resultingAvailableModules set of modules available including modules from this chunk group
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* @property {Set<ChunkGroupInfo>} children set of children chunk groups, that will be revisited when availableModules shrink
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* @property {Set<ChunkGroupInfo>} availableSources set of chunk groups that are the source for minAvailableModules
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* @property {Set<ChunkGroupInfo>} availableChildren set of chunk groups which depend on the this chunk group as availableSource
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* @property {number} preOrderIndex next pre order index
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* @property {number} postOrderIndex next post order index
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*/
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/**
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* @typedef {Object} BlockChunkGroupConnection
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* @property {ChunkGroupInfo} originChunkGroupInfo origin chunk group
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* @property {ChunkGroup} chunkGroup referenced chunk group
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*/
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const EMPTY_SET = /** @type {ModuleSetPlus} */ (new Set());
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EMPTY_SET.plus = EMPTY_SET;
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/**
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* @param {ModuleSetPlus} a first set
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* @param {ModuleSetPlus} b second set
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* @returns {number} cmp
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*/
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const bySetSize = (a, b) => {
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return b.size + b.plus.size - a.size - a.plus.size;
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};
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/**
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*
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* @param {ModuleGraphConnection[]} connections list of connections
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* @param {RuntimeSpec} runtime for which runtime
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* @returns {ConnectionState} connection state
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*/
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const getActiveStateOfConnections = (connections, runtime) => {
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let merged = connections[0].getActiveState(runtime);
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if (merged === true) return true;
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for (let i = 1; i < connections.length; i++) {
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const c = connections[i];
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merged = ModuleGraphConnection.addConnectionStates(
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merged,
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c.getActiveState(runtime)
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);
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if (merged === true) return true;
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}
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return merged;
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};
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/**
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* Extracts block to modules mapping from all modules
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* @param {Compilation} compilation the compilation
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* @returns {Map<DependenciesBlock, Map<Module, ModuleGraphConnection[]>>} the mapping block to modules
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*/
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const extractBlockModulesMap = compilation => {
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const { moduleGraph } = compilation;
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/** @type {Map<DependenciesBlock, Map<Module, ModuleGraphConnection[]>>} */
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const blockModulesMap = new Map();
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const blockQueue = new Set();
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for (const module of compilation.modules) {
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/** @type {WeakMap<Dependency, ModuleGraphConnection>} */
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let moduleMap;
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for (const connection of moduleGraph.getOutgoingConnections(module)) {
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const d = connection.dependency;
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// We skip connections without dependency
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if (!d) continue;
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const m = connection.module;
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// We skip connections without Module pointer
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if (!m) continue;
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// We skip weak connections
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if (connection.weak) continue;
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const state = connection.getActiveState(undefined);
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// We skip inactive connections
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if (state === false) continue;
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// Store Dependency to Module mapping in local map
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// to allow to access it faster compared to
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// moduleGraph.getConnection()
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if (moduleMap === undefined) {
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moduleMap = new WeakMap();
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}
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moduleMap.set(connection.dependency, connection);
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}
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blockQueue.clear();
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blockQueue.add(module);
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for (const block of blockQueue) {
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let modules;
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if (moduleMap !== undefined && block.dependencies) {
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for (const dep of block.dependencies) {
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const connection = moduleMap.get(dep);
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if (connection !== undefined) {
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const { module } = connection;
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if (modules === undefined) {
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modules = new Map();
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blockModulesMap.set(block, modules);
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}
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const old = modules.get(module);
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if (old !== undefined) {
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old.push(connection);
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} else {
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modules.set(module, [connection]);
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}
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}
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}
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}
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if (block.blocks) {
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for (const b of block.blocks) {
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blockQueue.add(b);
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}
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}
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}
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}
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return blockModulesMap;
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};
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/**
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*
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* @param {Logger} logger a logger
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* @param {Compilation} compilation the compilation
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* @param {Map<Entrypoint, Module[]>} inputEntrypointsAndModules chunk groups which are processed with the modules
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* @param {Map<ChunkGroup, ChunkGroupInfo>} chunkGroupInfoMap mapping from chunk group to available modules
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* @param {Map<AsyncDependenciesBlock, BlockChunkGroupConnection[]>} blockConnections connection for blocks
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* @param {Set<DependenciesBlock>} blocksWithNestedBlocks flag for blocks that have nested blocks
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* @param {Set<ChunkGroup>} allCreatedChunkGroups filled with all chunk groups that are created here
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*/
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const visitModules = (
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logger,
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compilation,
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inputEntrypointsAndModules,
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chunkGroupInfoMap,
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blockConnections,
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blocksWithNestedBlocks,
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allCreatedChunkGroups
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) => {
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const { moduleGraph, chunkGraph } = compilation;
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logger.time("visitModules: prepare");
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const blockModulesMap = extractBlockModulesMap(compilation);
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let statProcessedQueueItems = 0;
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let statProcessedBlocks = 0;
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let statConnectedChunkGroups = 0;
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let statProcessedChunkGroupsForMerging = 0;
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let statMergedAvailableModuleSets = 0;
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let statForkedAvailableModules = 0;
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let statForkedAvailableModulesCount = 0;
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let statForkedAvailableModulesCountPlus = 0;
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let statForkedMergedModulesCount = 0;
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let statForkedMergedModulesCountPlus = 0;
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let statForkedResultModulesCount = 0;
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let statChunkGroupInfoUpdated = 0;
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let statChildChunkGroupsReconnected = 0;
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let nextChunkGroupIndex = 0;
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let nextFreeModulePreOrderIndex = 0;
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let nextFreeModulePostOrderIndex = 0;
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/** @type {Map<DependenciesBlock, ChunkGroupInfo>} */
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const blockChunkGroups = new Map();
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/** @type {Map<string, ChunkGroupInfo>} */
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const namedChunkGroups = new Map();
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/** @type {Map<string, ChunkGroupInfo>} */
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const namedAsyncEntrypoints = new Map();
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const ADD_AND_ENTER_ENTRY_MODULE = 0;
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const ADD_AND_ENTER_MODULE = 1;
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const ENTER_MODULE = 2;
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const PROCESS_BLOCK = 3;
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const PROCESS_ENTRY_BLOCK = 4;
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const LEAVE_MODULE = 5;
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/** @type {QueueItem[]} */
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let queue = [];
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/** @type {Map<ChunkGroupInfo, Set<ChunkGroupInfo>>} */
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const queueConnect = new Map();
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/** @type {Set<ChunkGroupInfo>} */
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const chunkGroupsForCombining = new Set();
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// Fill queue with entrypoint modules
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// Create ChunkGroupInfo for entrypoints
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for (const [chunkGroup, modules] of inputEntrypointsAndModules) {
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const runtime = getEntryRuntime(
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compilation,
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chunkGroup.name,
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chunkGroup.options
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);
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/** @type {ChunkGroupInfo} */
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const chunkGroupInfo = {
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chunkGroup,
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runtime,
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minAvailableModules: undefined,
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minAvailableModulesOwned: false,
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availableModulesToBeMerged: [],
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skippedItems: undefined,
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resultingAvailableModules: undefined,
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children: undefined,
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availableSources: undefined,
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availableChildren: undefined,
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preOrderIndex: 0,
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postOrderIndex: 0
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};
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chunkGroup.index = nextChunkGroupIndex++;
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if (chunkGroup.getNumberOfParents() > 0) {
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// minAvailableModules for child entrypoints are unknown yet, set to undefined.
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// This means no module is added until other sets are merged into
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// this minAvailableModules (by the parent entrypoints)
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const skippedItems = new Set();
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for (const module of modules) {
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skippedItems.add(module);
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}
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chunkGroupInfo.skippedItems = skippedItems;
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chunkGroupsForCombining.add(chunkGroupInfo);
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} else {
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// The application may start here: We start with an empty list of available modules
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chunkGroupInfo.minAvailableModules = EMPTY_SET;
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const chunk = chunkGroup.getEntrypointChunk();
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for (const module of modules) {
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queue.push({
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action: ADD_AND_ENTER_MODULE,
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block: module,
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module,
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chunk,
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chunkGroup,
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chunkGroupInfo
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});
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}
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}
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chunkGroupInfoMap.set(chunkGroup, chunkGroupInfo);
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if (chunkGroup.name) {
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namedChunkGroups.set(chunkGroup.name, chunkGroupInfo);
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}
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}
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// Fill availableSources with parent-child dependencies between entrypoints
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for (const chunkGroupInfo of chunkGroupsForCombining) {
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const { chunkGroup } = chunkGroupInfo;
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chunkGroupInfo.availableSources = new Set();
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for (const parent of chunkGroup.parentsIterable) {
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const parentChunkGroupInfo = chunkGroupInfoMap.get(parent);
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chunkGroupInfo.availableSources.add(parentChunkGroupInfo);
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if (parentChunkGroupInfo.availableChildren === undefined) {
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parentChunkGroupInfo.availableChildren = new Set();
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}
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parentChunkGroupInfo.availableChildren.add(chunkGroupInfo);
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}
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}
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// pop() is used to read from the queue
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// so it need to be reversed to be iterated in
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// correct order
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queue.reverse();
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/** @type {Set<ChunkGroupInfo>} */
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const outdatedChunkGroupInfo = new Set();
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/** @type {Set<ChunkGroupInfo>} */
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const chunkGroupsForMerging = new Set();
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/** @type {QueueItem[]} */
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let queueDelayed = [];
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logger.timeEnd("visitModules: prepare");
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/** @type {[Module, ModuleGraphConnection[]][]} */
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const skipConnectionBuffer = [];
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/** @type {Module[]} */
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const skipBuffer = [];
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/** @type {QueueItem[]} */
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const queueBuffer = [];
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/** @type {Module} */
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let module;
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/** @type {Chunk} */
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let chunk;
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/** @type {ChunkGroup} */
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let chunkGroup;
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/** @type {DependenciesBlock} */
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let block;
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/** @type {ChunkGroupInfo} */
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let chunkGroupInfo;
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// For each async Block in graph
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/**
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* @param {AsyncDependenciesBlock} b iterating over each Async DepBlock
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* @returns {void}
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*/
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const iteratorBlock = b => {
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// 1. We create a chunk group with single chunk in it for this Block
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// but only once (blockChunkGroups map)
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let cgi = blockChunkGroups.get(b);
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/** @type {ChunkGroup} */
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let c;
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/** @type {Entrypoint} */
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let entrypoint;
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const entryOptions = b.groupOptions && b.groupOptions.entryOptions;
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if (cgi === undefined) {
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const chunkName = (b.groupOptions && b.groupOptions.name) || b.chunkName;
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if (entryOptions) {
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cgi = namedAsyncEntrypoints.get(chunkName);
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if (!cgi) {
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entrypoint = compilation.addAsyncEntrypoint(
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entryOptions,
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module,
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b.loc,
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b.request
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);
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entrypoint.index = nextChunkGroupIndex++;
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cgi = {
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chunkGroup: entrypoint,
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runtime: entrypoint.options.runtime || entrypoint.name,
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minAvailableModules: EMPTY_SET,
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minAvailableModulesOwned: false,
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availableModulesToBeMerged: [],
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skippedItems: undefined,
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resultingAvailableModules: undefined,
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children: undefined,
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availableSources: undefined,
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availableChildren: undefined,
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preOrderIndex: 0,
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postOrderIndex: 0
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};
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chunkGroupInfoMap.set(entrypoint, cgi);
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chunkGraph.connectBlockAndChunkGroup(b, entrypoint);
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if (chunkName) {
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namedAsyncEntrypoints.set(chunkName, cgi);
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}
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} else {
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entrypoint = /** @type {Entrypoint} */ (cgi.chunkGroup);
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// TODO merge entryOptions
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entrypoint.addOrigin(module, b.loc, b.request);
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chunkGraph.connectBlockAndChunkGroup(b, entrypoint);
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}
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// 2. We enqueue the DependenciesBlock for traversal
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queueDelayed.push({
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action: PROCESS_ENTRY_BLOCK,
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block: b,
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module: module,
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chunk: entrypoint.chunks[0],
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chunkGroup: entrypoint,
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chunkGroupInfo: cgi
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});
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} else {
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cgi = namedChunkGroups.get(chunkName);
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if (!cgi) {
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c = compilation.addChunkInGroup(
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b.groupOptions || b.chunkName,
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module,
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b.loc,
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b.request
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);
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c.index = nextChunkGroupIndex++;
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cgi = {
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chunkGroup: c,
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runtime: chunkGroupInfo.runtime,
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minAvailableModules: undefined,
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minAvailableModulesOwned: undefined,
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availableModulesToBeMerged: [],
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skippedItems: undefined,
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resultingAvailableModules: undefined,
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children: undefined,
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availableSources: undefined,
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availableChildren: undefined,
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preOrderIndex: 0,
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postOrderIndex: 0
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};
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allCreatedChunkGroups.add(c);
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chunkGroupInfoMap.set(c, cgi);
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if (chunkName) {
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namedChunkGroups.set(chunkName, cgi);
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}
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} else {
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c = cgi.chunkGroup;
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if (c.isInitial()) {
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compilation.errors.push(
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new AsyncDependencyToInitialChunkError(chunkName, module, b.loc)
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);
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c = chunkGroup;
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}
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c.addOptions(b.groupOptions);
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c.addOrigin(module, b.loc, b.request);
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}
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blockConnections.set(b, []);
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}
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blockChunkGroups.set(b, cgi);
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} else if (entryOptions) {
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entrypoint = /** @type {Entrypoint} */ (cgi.chunkGroup);
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} else {
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c = cgi.chunkGroup;
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}
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if (c !== undefined) {
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// 2. We store the connection for the block
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// to connect it later if needed
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blockConnections.get(b).push({
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originChunkGroupInfo: chunkGroupInfo,
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chunkGroup: c
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});
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// 3. We enqueue the chunk group info creation/updating
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let connectList = queueConnect.get(chunkGroupInfo);
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if (connectList === undefined) {
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connectList = new Set();
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queueConnect.set(chunkGroupInfo, connectList);
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}
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connectList.add(cgi);
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// TODO check if this really need to be done for each traversal
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// or if it is enough when it's queued when created
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// 4. We enqueue the DependenciesBlock for traversal
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queueDelayed.push({
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action: PROCESS_BLOCK,
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block: b,
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module: module,
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chunk: c.chunks[0],
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chunkGroup: c,
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chunkGroupInfo: cgi
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});
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} else {
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chunkGroupInfo.chunkGroup.addAsyncEntrypoint(entrypoint);
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}
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};
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/**
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* @param {DependenciesBlock} block the block
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* @returns {void}
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*/
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const processBlock = block => {
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statProcessedBlocks++;
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// get prepared block info
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const blockModules = blockModulesMap.get(block);
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if (blockModules !== undefined) {
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const { minAvailableModules, runtime } = chunkGroupInfo;
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// Buffer items because order need to be reversed to get indices correct
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// Traverse all referenced modules
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for (const entry of blockModules) {
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const [refModule, connections] = entry;
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if (chunkGraph.isModuleInChunk(refModule, chunk)) {
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// skip early if already connected
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continue;
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}
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const activeState = getActiveStateOfConnections(connections, runtime);
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if (activeState !== true) {
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skipConnectionBuffer.push(entry);
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if (activeState === false) continue;
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}
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if (
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activeState === true &&
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(minAvailableModules.has(refModule) ||
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minAvailableModules.plus.has(refModule))
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) {
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// already in parent chunks, skip it for now
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skipBuffer.push(refModule);
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continue;
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}
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// enqueue, then add and enter to be in the correct order
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// this is relevant with circular dependencies
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queueBuffer.push({
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action: activeState === true ? ADD_AND_ENTER_MODULE : PROCESS_BLOCK,
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block: refModule,
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module: refModule,
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chunk,
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chunkGroup,
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chunkGroupInfo
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});
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}
|
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// Add buffered items in reverse order
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if (skipConnectionBuffer.length > 0) {
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let { skippedModuleConnections } = chunkGroupInfo;
|
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if (skippedModuleConnections === undefined) {
|
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chunkGroupInfo.skippedModuleConnections = skippedModuleConnections =
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new Set();
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}
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for (let i = skipConnectionBuffer.length - 1; i >= 0; i--) {
|
|
skippedModuleConnections.add(skipConnectionBuffer[i]);
|
|
}
|
|
skipConnectionBuffer.length = 0;
|
|
}
|
|
if (skipBuffer.length > 0) {
|
|
let { skippedItems } = chunkGroupInfo;
|
|
if (skippedItems === undefined) {
|
|
chunkGroupInfo.skippedItems = skippedItems = new Set();
|
|
}
|
|
for (let i = skipBuffer.length - 1; i >= 0; i--) {
|
|
skippedItems.add(skipBuffer[i]);
|
|
}
|
|
skipBuffer.length = 0;
|
|
}
|
|
if (queueBuffer.length > 0) {
|
|
for (let i = queueBuffer.length - 1; i >= 0; i--) {
|
|
queue.push(queueBuffer[i]);
|
|
}
|
|
queueBuffer.length = 0;
|
|
}
|
|
}
|
|
|
|
// Traverse all Blocks
|
|
for (const b of block.blocks) {
|
|
iteratorBlock(b);
|
|
}
|
|
|
|
if (block.blocks.length > 0 && module !== block) {
|
|
blocksWithNestedBlocks.add(block);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @param {DependenciesBlock} block the block
|
|
* @returns {void}
|
|
*/
|
|
const processEntryBlock = block => {
|
|
statProcessedBlocks++;
|
|
// get prepared block info
|
|
const blockModules = blockModulesMap.get(block);
|
|
|
|
if (blockModules !== undefined) {
|
|
// Traverse all referenced modules
|
|
for (const [refModule, connections] of blockModules) {
|
|
const activeState = getActiveStateOfConnections(connections, undefined);
|
|
// enqueue, then add and enter to be in the correct order
|
|
// this is relevant with circular dependencies
|
|
queueBuffer.push({
|
|
action:
|
|
activeState === true ? ADD_AND_ENTER_ENTRY_MODULE : PROCESS_BLOCK,
|
|
block: refModule,
|
|
module: refModule,
|
|
chunk,
|
|
chunkGroup,
|
|
chunkGroupInfo
|
|
});
|
|
}
|
|
// Add buffered items in reverse order
|
|
if (queueBuffer.length > 0) {
|
|
for (let i = queueBuffer.length - 1; i >= 0; i--) {
|
|
queue.push(queueBuffer[i]);
|
|
}
|
|
queueBuffer.length = 0;
|
|
}
|
|
}
|
|
|
|
// Traverse all Blocks
|
|
for (const b of block.blocks) {
|
|
iteratorBlock(b);
|
|
}
|
|
|
|
if (block.blocks.length > 0 && module !== block) {
|
|
blocksWithNestedBlocks.add(block);
|
|
}
|
|
};
|
|
|
|
const processQueue = () => {
|
|
while (queue.length) {
|
|
statProcessedQueueItems++;
|
|
const queueItem = queue.pop();
|
|
module = queueItem.module;
|
|
block = queueItem.block;
|
|
chunk = queueItem.chunk;
|
|
chunkGroup = queueItem.chunkGroup;
|
|
chunkGroupInfo = queueItem.chunkGroupInfo;
|
|
|
|
switch (queueItem.action) {
|
|
case ADD_AND_ENTER_ENTRY_MODULE:
|
|
chunkGraph.connectChunkAndEntryModule(
|
|
chunk,
|
|
module,
|
|
/** @type {Entrypoint} */ (chunkGroup)
|
|
);
|
|
// fallthrough
|
|
case ADD_AND_ENTER_MODULE: {
|
|
if (chunkGraph.isModuleInChunk(module, chunk)) {
|
|
// already connected, skip it
|
|
break;
|
|
}
|
|
// We connect Module and Chunk
|
|
chunkGraph.connectChunkAndModule(chunk, module);
|
|
}
|
|
// fallthrough
|
|
case ENTER_MODULE: {
|
|
const index = chunkGroup.getModulePreOrderIndex(module);
|
|
if (index === undefined) {
|
|
chunkGroup.setModulePreOrderIndex(
|
|
module,
|
|
chunkGroupInfo.preOrderIndex++
|
|
);
|
|
}
|
|
|
|
if (
|
|
moduleGraph.setPreOrderIndexIfUnset(
|
|
module,
|
|
nextFreeModulePreOrderIndex
|
|
)
|
|
) {
|
|
nextFreeModulePreOrderIndex++;
|
|
}
|
|
|
|
// reuse queueItem
|
|
queueItem.action = LEAVE_MODULE;
|
|
queue.push(queueItem);
|
|
}
|
|
// fallthrough
|
|
case PROCESS_BLOCK: {
|
|
processBlock(block);
|
|
break;
|
|
}
|
|
case PROCESS_ENTRY_BLOCK: {
|
|
processEntryBlock(block);
|
|
break;
|
|
}
|
|
case LEAVE_MODULE: {
|
|
const index = chunkGroup.getModulePostOrderIndex(module);
|
|
if (index === undefined) {
|
|
chunkGroup.setModulePostOrderIndex(
|
|
module,
|
|
chunkGroupInfo.postOrderIndex++
|
|
);
|
|
}
|
|
|
|
if (
|
|
moduleGraph.setPostOrderIndexIfUnset(
|
|
module,
|
|
nextFreeModulePostOrderIndex
|
|
)
|
|
) {
|
|
nextFreeModulePostOrderIndex++;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
const calculateResultingAvailableModules = chunkGroupInfo => {
|
|
if (chunkGroupInfo.resultingAvailableModules)
|
|
return chunkGroupInfo.resultingAvailableModules;
|
|
|
|
const minAvailableModules = chunkGroupInfo.minAvailableModules;
|
|
|
|
// Create a new Set of available modules at this point
|
|
// We want to be as lazy as possible. There are multiple ways doing this:
|
|
// Note that resultingAvailableModules is stored as "(a) + (b)" as it's a ModuleSetPlus
|
|
// - resultingAvailableModules = (modules of chunk) + (minAvailableModules + minAvailableModules.plus)
|
|
// - resultingAvailableModules = (minAvailableModules + modules of chunk) + (minAvailableModules.plus)
|
|
// We choose one depending on the size of minAvailableModules vs minAvailableModules.plus
|
|
|
|
let resultingAvailableModules;
|
|
if (minAvailableModules.size > minAvailableModules.plus.size) {
|
|
// resultingAvailableModules = (modules of chunk) + (minAvailableModules + minAvailableModules.plus)
|
|
resultingAvailableModules =
|
|
/** @type {Set<Module> & {plus: Set<Module>}} */ (new Set());
|
|
for (const module of minAvailableModules.plus)
|
|
minAvailableModules.add(module);
|
|
minAvailableModules.plus = EMPTY_SET;
|
|
resultingAvailableModules.plus = minAvailableModules;
|
|
chunkGroupInfo.minAvailableModulesOwned = false;
|
|
} else {
|
|
// resultingAvailableModules = (minAvailableModules + modules of chunk) + (minAvailableModules.plus)
|
|
resultingAvailableModules =
|
|
/** @type {Set<Module> & {plus: Set<Module>}} */ (
|
|
new Set(minAvailableModules)
|
|
);
|
|
resultingAvailableModules.plus = minAvailableModules.plus;
|
|
}
|
|
|
|
// add the modules from the chunk group to the set
|
|
for (const chunk of chunkGroupInfo.chunkGroup.chunks) {
|
|
for (const m of chunkGraph.getChunkModulesIterable(chunk)) {
|
|
resultingAvailableModules.add(m);
|
|
}
|
|
}
|
|
return (chunkGroupInfo.resultingAvailableModules =
|
|
resultingAvailableModules);
|
|
};
|
|
|
|
const processConnectQueue = () => {
|
|
// Figure out new parents for chunk groups
|
|
// to get new available modules for these children
|
|
for (const [chunkGroupInfo, targets] of queueConnect) {
|
|
// 1. Add new targets to the list of children
|
|
if (chunkGroupInfo.children === undefined) {
|
|
chunkGroupInfo.children = targets;
|
|
} else {
|
|
for (const target of targets) {
|
|
chunkGroupInfo.children.add(target);
|
|
}
|
|
}
|
|
|
|
// 2. Calculate resulting available modules
|
|
const resultingAvailableModules =
|
|
calculateResultingAvailableModules(chunkGroupInfo);
|
|
|
|
const runtime = chunkGroupInfo.runtime;
|
|
|
|
// 3. Update chunk group info
|
|
for (const target of targets) {
|
|
target.availableModulesToBeMerged.push(resultingAvailableModules);
|
|
chunkGroupsForMerging.add(target);
|
|
const oldRuntime = target.runtime;
|
|
const newRuntime = mergeRuntime(oldRuntime, runtime);
|
|
if (oldRuntime !== newRuntime) {
|
|
target.runtime = newRuntime;
|
|
outdatedChunkGroupInfo.add(target);
|
|
}
|
|
}
|
|
|
|
statConnectedChunkGroups += targets.size;
|
|
}
|
|
queueConnect.clear();
|
|
};
|
|
|
|
const processChunkGroupsForMerging = () => {
|
|
statProcessedChunkGroupsForMerging += chunkGroupsForMerging.size;
|
|
|
|
// Execute the merge
|
|
for (const info of chunkGroupsForMerging) {
|
|
const availableModulesToBeMerged = info.availableModulesToBeMerged;
|
|
let cachedMinAvailableModules = info.minAvailableModules;
|
|
|
|
statMergedAvailableModuleSets += availableModulesToBeMerged.length;
|
|
|
|
// 1. Get minimal available modules
|
|
// It doesn't make sense to traverse a chunk again with more available modules.
|
|
// This step calculates the minimal available modules and skips traversal when
|
|
// the list didn't shrink.
|
|
if (availableModulesToBeMerged.length > 1) {
|
|
availableModulesToBeMerged.sort(bySetSize);
|
|
}
|
|
let changed = false;
|
|
merge: for (const availableModules of availableModulesToBeMerged) {
|
|
if (cachedMinAvailableModules === undefined) {
|
|
cachedMinAvailableModules = availableModules;
|
|
info.minAvailableModules = cachedMinAvailableModules;
|
|
info.minAvailableModulesOwned = false;
|
|
changed = true;
|
|
} else {
|
|
if (info.minAvailableModulesOwned) {
|
|
// We own it and can modify it
|
|
if (cachedMinAvailableModules.plus === availableModules.plus) {
|
|
for (const m of cachedMinAvailableModules) {
|
|
if (!availableModules.has(m)) {
|
|
cachedMinAvailableModules.delete(m);
|
|
changed = true;
|
|
}
|
|
}
|
|
} else {
|
|
for (const m of cachedMinAvailableModules) {
|
|
if (!availableModules.has(m) && !availableModules.plus.has(m)) {
|
|
cachedMinAvailableModules.delete(m);
|
|
changed = true;
|
|
}
|
|
}
|
|
for (const m of cachedMinAvailableModules.plus) {
|
|
if (!availableModules.has(m) && !availableModules.plus.has(m)) {
|
|
// We can't remove modules from the plus part
|
|
// so we need to merge plus into the normal part to allow modifying it
|
|
const iterator =
|
|
cachedMinAvailableModules.plus[Symbol.iterator]();
|
|
// fast forward add all modules until m
|
|
/** @type {IteratorResult<Module>} */
|
|
let it;
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (module === m) break;
|
|
cachedMinAvailableModules.add(module);
|
|
}
|
|
// check the remaining modules before adding
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (
|
|
availableModules.has(module) ||
|
|
availableModules.plus.has(m)
|
|
) {
|
|
cachedMinAvailableModules.add(module);
|
|
}
|
|
}
|
|
cachedMinAvailableModules.plus = EMPTY_SET;
|
|
changed = true;
|
|
continue merge;
|
|
}
|
|
}
|
|
}
|
|
} else if (cachedMinAvailableModules.plus === availableModules.plus) {
|
|
// Common and fast case when the plus part is shared
|
|
// We only need to care about the normal part
|
|
if (availableModules.size < cachedMinAvailableModules.size) {
|
|
// the new availableModules is smaller so it's faster to
|
|
// fork from the new availableModules
|
|
statForkedAvailableModules++;
|
|
statForkedAvailableModulesCount += availableModules.size;
|
|
statForkedMergedModulesCount += cachedMinAvailableModules.size;
|
|
// construct a new Set as intersection of cachedMinAvailableModules and availableModules
|
|
const newSet = /** @type {ModuleSetPlus} */ (new Set());
|
|
newSet.plus = availableModules.plus;
|
|
for (const m of availableModules) {
|
|
if (cachedMinAvailableModules.has(m)) {
|
|
newSet.add(m);
|
|
}
|
|
}
|
|
statForkedResultModulesCount += newSet.size;
|
|
cachedMinAvailableModules = newSet;
|
|
info.minAvailableModulesOwned = true;
|
|
info.minAvailableModules = newSet;
|
|
changed = true;
|
|
continue merge;
|
|
}
|
|
for (const m of cachedMinAvailableModules) {
|
|
if (!availableModules.has(m)) {
|
|
// cachedMinAvailableModules need to be modified
|
|
// but we don't own it
|
|
statForkedAvailableModules++;
|
|
statForkedAvailableModulesCount +=
|
|
cachedMinAvailableModules.size;
|
|
statForkedMergedModulesCount += availableModules.size;
|
|
// construct a new Set as intersection of cachedMinAvailableModules and availableModules
|
|
// as the plus part is equal we can just take over this one
|
|
const newSet = /** @type {ModuleSetPlus} */ (new Set());
|
|
newSet.plus = availableModules.plus;
|
|
const iterator = cachedMinAvailableModules[Symbol.iterator]();
|
|
// fast forward add all modules until m
|
|
/** @type {IteratorResult<Module>} */
|
|
let it;
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (module === m) break;
|
|
newSet.add(module);
|
|
}
|
|
// check the remaining modules before adding
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (availableModules.has(module)) {
|
|
newSet.add(module);
|
|
}
|
|
}
|
|
statForkedResultModulesCount += newSet.size;
|
|
cachedMinAvailableModules = newSet;
|
|
info.minAvailableModulesOwned = true;
|
|
info.minAvailableModules = newSet;
|
|
changed = true;
|
|
continue merge;
|
|
}
|
|
}
|
|
} else {
|
|
for (const m of cachedMinAvailableModules) {
|
|
if (!availableModules.has(m) && !availableModules.plus.has(m)) {
|
|
// cachedMinAvailableModules need to be modified
|
|
// but we don't own it
|
|
statForkedAvailableModules++;
|
|
statForkedAvailableModulesCount +=
|
|
cachedMinAvailableModules.size;
|
|
statForkedAvailableModulesCountPlus +=
|
|
cachedMinAvailableModules.plus.size;
|
|
statForkedMergedModulesCount += availableModules.size;
|
|
statForkedMergedModulesCountPlus += availableModules.plus.size;
|
|
// construct a new Set as intersection of cachedMinAvailableModules and availableModules
|
|
const newSet = /** @type {ModuleSetPlus} */ (new Set());
|
|
newSet.plus = EMPTY_SET;
|
|
const iterator = cachedMinAvailableModules[Symbol.iterator]();
|
|
// fast forward add all modules until m
|
|
/** @type {IteratorResult<Module>} */
|
|
let it;
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (module === m) break;
|
|
newSet.add(module);
|
|
}
|
|
// check the remaining modules before adding
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (
|
|
availableModules.has(module) ||
|
|
availableModules.plus.has(module)
|
|
) {
|
|
newSet.add(module);
|
|
}
|
|
}
|
|
// also check all modules in cachedMinAvailableModules.plus
|
|
for (const module of cachedMinAvailableModules.plus) {
|
|
if (
|
|
availableModules.has(module) ||
|
|
availableModules.plus.has(module)
|
|
) {
|
|
newSet.add(module);
|
|
}
|
|
}
|
|
statForkedResultModulesCount += newSet.size;
|
|
cachedMinAvailableModules = newSet;
|
|
info.minAvailableModulesOwned = true;
|
|
info.minAvailableModules = newSet;
|
|
changed = true;
|
|
continue merge;
|
|
}
|
|
}
|
|
for (const m of cachedMinAvailableModules.plus) {
|
|
if (!availableModules.has(m) && !availableModules.plus.has(m)) {
|
|
// cachedMinAvailableModules need to be modified
|
|
// but we don't own it
|
|
statForkedAvailableModules++;
|
|
statForkedAvailableModulesCount +=
|
|
cachedMinAvailableModules.size;
|
|
statForkedAvailableModulesCountPlus +=
|
|
cachedMinAvailableModules.plus.size;
|
|
statForkedMergedModulesCount += availableModules.size;
|
|
statForkedMergedModulesCountPlus += availableModules.plus.size;
|
|
// construct a new Set as intersection of cachedMinAvailableModules and availableModules
|
|
// we already know that all modules directly from cachedMinAvailableModules are in availableModules too
|
|
const newSet = /** @type {ModuleSetPlus} */ (
|
|
new Set(cachedMinAvailableModules)
|
|
);
|
|
newSet.plus = EMPTY_SET;
|
|
const iterator =
|
|
cachedMinAvailableModules.plus[Symbol.iterator]();
|
|
// fast forward add all modules until m
|
|
/** @type {IteratorResult<Module>} */
|
|
let it;
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (module === m) break;
|
|
newSet.add(module);
|
|
}
|
|
// check the remaining modules before adding
|
|
while (!(it = iterator.next()).done) {
|
|
const module = it.value;
|
|
if (
|
|
availableModules.has(module) ||
|
|
availableModules.plus.has(module)
|
|
) {
|
|
newSet.add(module);
|
|
}
|
|
}
|
|
statForkedResultModulesCount += newSet.size;
|
|
cachedMinAvailableModules = newSet;
|
|
info.minAvailableModulesOwned = true;
|
|
info.minAvailableModules = newSet;
|
|
changed = true;
|
|
continue merge;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
availableModulesToBeMerged.length = 0;
|
|
if (changed) {
|
|
info.resultingAvailableModules = undefined;
|
|
outdatedChunkGroupInfo.add(info);
|
|
}
|
|
}
|
|
chunkGroupsForMerging.clear();
|
|
};
|
|
|
|
const processChunkGroupsForCombining = () => {
|
|
for (const info of chunkGroupsForCombining) {
|
|
for (const source of info.availableSources) {
|
|
if (!source.minAvailableModules) {
|
|
chunkGroupsForCombining.delete(info);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
for (const info of chunkGroupsForCombining) {
|
|
const availableModules = /** @type {ModuleSetPlus} */ (new Set());
|
|
availableModules.plus = EMPTY_SET;
|
|
const mergeSet = set => {
|
|
if (set.size > availableModules.plus.size) {
|
|
for (const item of availableModules.plus) availableModules.add(item);
|
|
availableModules.plus = set;
|
|
} else {
|
|
for (const item of set) availableModules.add(item);
|
|
}
|
|
};
|
|
// combine minAvailableModules from all resultingAvailableModules
|
|
for (const source of info.availableSources) {
|
|
const resultingAvailableModules =
|
|
calculateResultingAvailableModules(source);
|
|
mergeSet(resultingAvailableModules);
|
|
mergeSet(resultingAvailableModules.plus);
|
|
}
|
|
info.minAvailableModules = availableModules;
|
|
info.minAvailableModulesOwned = false;
|
|
info.resultingAvailableModules = undefined;
|
|
outdatedChunkGroupInfo.add(info);
|
|
}
|
|
chunkGroupsForCombining.clear();
|
|
};
|
|
|
|
const processOutdatedChunkGroupInfo = () => {
|
|
statChunkGroupInfoUpdated += outdatedChunkGroupInfo.size;
|
|
// Revisit skipped elements
|
|
for (const info of outdatedChunkGroupInfo) {
|
|
// 1. Reconsider skipped items
|
|
if (info.skippedItems !== undefined) {
|
|
const { minAvailableModules } = info;
|
|
for (const module of info.skippedItems) {
|
|
if (
|
|
!minAvailableModules.has(module) &&
|
|
!minAvailableModules.plus.has(module)
|
|
) {
|
|
queue.push({
|
|
action: ADD_AND_ENTER_MODULE,
|
|
block: module,
|
|
module,
|
|
chunk: info.chunkGroup.chunks[0],
|
|
chunkGroup: info.chunkGroup,
|
|
chunkGroupInfo: info
|
|
});
|
|
info.skippedItems.delete(module);
|
|
}
|
|
}
|
|
}
|
|
|
|
// 2. Reconsider skipped connections
|
|
if (info.skippedModuleConnections !== undefined) {
|
|
const { minAvailableModules, runtime } = info;
|
|
for (const entry of info.skippedModuleConnections) {
|
|
const [module, connections] = entry;
|
|
const activeState = getActiveStateOfConnections(connections, runtime);
|
|
if (activeState === false) continue;
|
|
if (activeState === true) {
|
|
info.skippedModuleConnections.delete(entry);
|
|
}
|
|
if (
|
|
activeState === true &&
|
|
(minAvailableModules.has(module) ||
|
|
minAvailableModules.plus.has(module))
|
|
) {
|
|
info.skippedItems.add(module);
|
|
continue;
|
|
}
|
|
queue.push({
|
|
action: activeState === true ? ADD_AND_ENTER_MODULE : PROCESS_BLOCK,
|
|
block: module,
|
|
module,
|
|
chunk: info.chunkGroup.chunks[0],
|
|
chunkGroup: info.chunkGroup,
|
|
chunkGroupInfo: info
|
|
});
|
|
}
|
|
}
|
|
|
|
// 2. Reconsider children chunk groups
|
|
if (info.children !== undefined) {
|
|
statChildChunkGroupsReconnected += info.children.size;
|
|
for (const cgi of info.children) {
|
|
let connectList = queueConnect.get(info);
|
|
if (connectList === undefined) {
|
|
connectList = new Set();
|
|
queueConnect.set(info, connectList);
|
|
}
|
|
connectList.add(cgi);
|
|
}
|
|
}
|
|
|
|
// 3. Reconsider chunk groups for combining
|
|
if (info.availableChildren !== undefined) {
|
|
for (const cgi of info.availableChildren) {
|
|
chunkGroupsForCombining.add(cgi);
|
|
}
|
|
}
|
|
}
|
|
outdatedChunkGroupInfo.clear();
|
|
};
|
|
|
|
// Iterative traversal of the Module graph
|
|
// Recursive would be simpler to write but could result in Stack Overflows
|
|
while (queue.length || queueConnect.size) {
|
|
logger.time("visitModules: visiting");
|
|
processQueue();
|
|
logger.timeEnd("visitModules: visiting");
|
|
|
|
if (chunkGroupsForCombining.size > 0) {
|
|
logger.time("visitModules: combine available modules");
|
|
processChunkGroupsForCombining();
|
|
logger.timeEnd("visitModules: combine available modules");
|
|
}
|
|
|
|
if (queueConnect.size > 0) {
|
|
logger.time("visitModules: calculating available modules");
|
|
processConnectQueue();
|
|
logger.timeEnd("visitModules: calculating available modules");
|
|
|
|
if (chunkGroupsForMerging.size > 0) {
|
|
logger.time("visitModules: merging available modules");
|
|
processChunkGroupsForMerging();
|
|
logger.timeEnd("visitModules: merging available modules");
|
|
}
|
|
}
|
|
|
|
if (outdatedChunkGroupInfo.size > 0) {
|
|
logger.time("visitModules: check modules for revisit");
|
|
processOutdatedChunkGroupInfo();
|
|
logger.timeEnd("visitModules: check modules for revisit");
|
|
}
|
|
|
|
// Run queueDelayed when all items of the queue are processed
|
|
// This is important to get the global indexing correct
|
|
// Async blocks should be processed after all sync blocks are processed
|
|
if (queue.length === 0) {
|
|
const tempQueue = queue;
|
|
queue = queueDelayed.reverse();
|
|
queueDelayed = tempQueue;
|
|
}
|
|
}
|
|
|
|
logger.log(
|
|
`${statProcessedQueueItems} queue items processed (${statProcessedBlocks} blocks)`
|
|
);
|
|
logger.log(`${statConnectedChunkGroups} chunk groups connected`);
|
|
logger.log(
|
|
`${statProcessedChunkGroupsForMerging} chunk groups processed for merging (${statMergedAvailableModuleSets} module sets, ${statForkedAvailableModules} forked, ${statForkedAvailableModulesCount} + ${statForkedAvailableModulesCountPlus} modules forked, ${statForkedMergedModulesCount} + ${statForkedMergedModulesCountPlus} modules merged into fork, ${statForkedResultModulesCount} resulting modules)`
|
|
);
|
|
logger.log(
|
|
`${statChunkGroupInfoUpdated} chunk group info updated (${statChildChunkGroupsReconnected} already connected chunk groups reconnected)`
|
|
);
|
|
};
|
|
|
|
/**
|
|
*
|
|
* @param {Compilation} compilation the compilation
|
|
* @param {Set<DependenciesBlock>} blocksWithNestedBlocks flag for blocks that have nested blocks
|
|
* @param {Map<AsyncDependenciesBlock, BlockChunkGroupConnection[]>} blockConnections connection for blocks
|
|
* @param {Map<ChunkGroup, ChunkGroupInfo>} chunkGroupInfoMap mapping from chunk group to available modules
|
|
*/
|
|
const connectChunkGroups = (
|
|
compilation,
|
|
blocksWithNestedBlocks,
|
|
blockConnections,
|
|
chunkGroupInfoMap
|
|
) => {
|
|
const { chunkGraph } = compilation;
|
|
|
|
/**
|
|
* Helper function to check if all modules of a chunk are available
|
|
*
|
|
* @param {ChunkGroup} chunkGroup the chunkGroup to scan
|
|
* @param {ModuleSetPlus} availableModules the comparator set
|
|
* @returns {boolean} return true if all modules of a chunk are available
|
|
*/
|
|
const areModulesAvailable = (chunkGroup, availableModules) => {
|
|
for (const chunk of chunkGroup.chunks) {
|
|
for (const module of chunkGraph.getChunkModulesIterable(chunk)) {
|
|
if (!availableModules.has(module) && !availableModules.plus.has(module))
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
|
|
// For each edge in the basic chunk graph
|
|
for (const [block, connections] of blockConnections) {
|
|
// 1. Check if connection is needed
|
|
// When none of the dependencies need to be connected
|
|
// we can skip all of them
|
|
// It's not possible to filter each item so it doesn't create inconsistent
|
|
// connections and modules can only create one version
|
|
// TODO maybe decide this per runtime
|
|
if (
|
|
// TODO is this needed?
|
|
!blocksWithNestedBlocks.has(block) &&
|
|
connections.every(({ chunkGroup, originChunkGroupInfo }) =>
|
|
areModulesAvailable(
|
|
chunkGroup,
|
|
originChunkGroupInfo.resultingAvailableModules
|
|
)
|
|
)
|
|
) {
|
|
continue;
|
|
}
|
|
|
|
// 2. Foreach edge
|
|
for (let i = 0; i < connections.length; i++) {
|
|
const { chunkGroup, originChunkGroupInfo } = connections[i];
|
|
|
|
// 3. Connect block with chunk
|
|
chunkGraph.connectBlockAndChunkGroup(block, chunkGroup);
|
|
|
|
// 4. Connect chunk with parent
|
|
connectChunkGroupParentAndChild(
|
|
originChunkGroupInfo.chunkGroup,
|
|
chunkGroup
|
|
);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Remove all unconnected chunk groups
|
|
* @param {Compilation} compilation the compilation
|
|
* @param {Iterable<ChunkGroup>} allCreatedChunkGroups all chunk groups that where created before
|
|
*/
|
|
const cleanupUnconnectedGroups = (compilation, allCreatedChunkGroups) => {
|
|
const { chunkGraph } = compilation;
|
|
|
|
for (const chunkGroup of allCreatedChunkGroups) {
|
|
if (chunkGroup.getNumberOfParents() === 0) {
|
|
for (const chunk of chunkGroup.chunks) {
|
|
compilation.chunks.delete(chunk);
|
|
chunkGraph.disconnectChunk(chunk);
|
|
}
|
|
chunkGraph.disconnectChunkGroup(chunkGroup);
|
|
chunkGroup.remove();
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* This method creates the Chunk graph from the Module graph
|
|
* @param {Compilation} compilation the compilation
|
|
* @param {Map<Entrypoint, Module[]>} inputEntrypointsAndModules chunk groups which are processed with the modules
|
|
* @returns {void}
|
|
*/
|
|
const buildChunkGraph = (compilation, inputEntrypointsAndModules) => {
|
|
const logger = compilation.getLogger("webpack.buildChunkGraph");
|
|
|
|
// SHARED STATE
|
|
|
|
/** @type {Map<AsyncDependenciesBlock, BlockChunkGroupConnection[]>} */
|
|
const blockConnections = new Map();
|
|
|
|
/** @type {Set<ChunkGroup>} */
|
|
const allCreatedChunkGroups = new Set();
|
|
|
|
/** @type {Map<ChunkGroup, ChunkGroupInfo>} */
|
|
const chunkGroupInfoMap = new Map();
|
|
|
|
/** @type {Set<DependenciesBlock>} */
|
|
const blocksWithNestedBlocks = new Set();
|
|
|
|
// PART ONE
|
|
|
|
logger.time("visitModules");
|
|
visitModules(
|
|
logger,
|
|
compilation,
|
|
inputEntrypointsAndModules,
|
|
chunkGroupInfoMap,
|
|
blockConnections,
|
|
blocksWithNestedBlocks,
|
|
allCreatedChunkGroups
|
|
);
|
|
logger.timeEnd("visitModules");
|
|
|
|
// PART TWO
|
|
|
|
logger.time("connectChunkGroups");
|
|
connectChunkGroups(
|
|
compilation,
|
|
blocksWithNestedBlocks,
|
|
blockConnections,
|
|
chunkGroupInfoMap
|
|
);
|
|
logger.timeEnd("connectChunkGroups");
|
|
|
|
for (const [chunkGroup, chunkGroupInfo] of chunkGroupInfoMap) {
|
|
for (const chunk of chunkGroup.chunks)
|
|
chunk.runtime = mergeRuntime(chunk.runtime, chunkGroupInfo.runtime);
|
|
}
|
|
|
|
// Cleanup work
|
|
|
|
logger.time("cleanup");
|
|
cleanupUnconnectedGroups(compilation, allCreatedChunkGroups);
|
|
logger.timeEnd("cleanup");
|
|
};
|
|
|
|
module.exports = buildChunkGraph;
|