node fixes, updates

1 files changed, 1327 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/buildChunkGraph.js b/node_modules/webpack/lib/buildChunkGraph.js
new file mode 100644
index 00000000..8b4916bd
--- /dev/null
+++ b/node_modules/webpack/lib/buildChunkGraph.js
@@ -0,0 +1,1327 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const AsyncDependencyToInitialChunkError = require("./AsyncDependencyToInitialChunkError");
+const { connectChunkGroupParentAndChild } = require("./GraphHelpers");
+const ModuleGraphConnection = require("./ModuleGraphConnection");
+const { getEntryRuntime, mergeRuntime } = require("./util/runtime");
+
+/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
+/** @typedef {import("./Chunk")} Chunk */
+/** @typedef {import("./ChunkGroup")} ChunkGroup */
+/** @typedef {import("./Compilation")} Compilation */
+/** @typedef {import("./DependenciesBlock")} DependenciesBlock */
+/** @typedef {import("./Dependency")} Dependency */
+/** @typedef {import("./Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("./Entrypoint")} Entrypoint */
+/** @typedef {import("./Module")} Module */
+/** @typedef {import("./ModuleGraph")} ModuleGraph */
+/** @typedef {import("./ModuleGraphConnection").ConnectionState} ConnectionState */
+/** @typedef {import("./logging/Logger").Logger} Logger */
+/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
+
+/**
+ * @typedef {object} QueueItem
+ * @property {number} action
+ * @property {DependenciesBlock} block
+ * @property {Module} module
+ * @property {Chunk} chunk
+ * @property {ChunkGroup} chunkGroup
+ * @property {ChunkGroupInfo} chunkGroupInfo
+ */
+
+/**
+ * @typedef {object} ChunkGroupInfo
+ * @property {ChunkGroup} chunkGroup the chunk group
+ * @property {RuntimeSpec} runtime the runtimes
+ * @property {bigint | undefined} minAvailableModules current minimal set of modules available at this point
+ * @property {bigint[]} availableModulesToBeMerged enqueued updates to the minimal set of available modules
+ * @property {Set<Module>=} skippedItems modules that were skipped because module is already available in parent chunks (need to reconsider when minAvailableModules is shrinking)
+ * @property {Set<[Module, ModuleGraphConnection[]]>=} skippedModuleConnections referenced modules that where skipped because they were not active in this runtime
+ * @property {bigint | undefined} resultingAvailableModules set of modules available including modules from this chunk group
+ * @property {Set<ChunkGroupInfo> | undefined} children set of children chunk groups, that will be revisited when availableModules shrink
+ * @property {Set<ChunkGroupInfo> | undefined} availableSources set of chunk groups that are the source for minAvailableModules
+ * @property {Set<ChunkGroupInfo> | undefined} availableChildren set of chunk groups which depend on the this chunk group as availableSource
+ * @property {number} preOrderIndex next pre order index
+ * @property {number} postOrderIndex next post order index
+ * @property {boolean} chunkLoading has a chunk loading mechanism
+ * @property {boolean} asyncChunks create async chunks
+ */
+
+/**
+ * @typedef {object} BlockChunkGroupConnection
+ * @property {ChunkGroupInfo} originChunkGroupInfo origin chunk group
+ * @property {ChunkGroup} chunkGroup referenced chunk group
+ */
+
+/** @typedef {(Module | ConnectionState | ModuleGraphConnection)[]} BlockModulesInTuples */
+/** @typedef {(Module | ConnectionState | ModuleGraphConnection[])[]} BlockModulesInFlattenTuples */
+/** @typedef {Map<DependenciesBlock, BlockModulesInFlattenTuples>} BlockModulesMap */
+/** @typedef {Map<Chunk, bigint>} MaskByChunk */
+/** @typedef {Set<DependenciesBlock>} BlocksWithNestedBlocks */
+/** @typedef {Map<AsyncDependenciesBlock, BlockChunkGroupConnection[]>} BlockConnections */
+/** @typedef {Map<ChunkGroup, ChunkGroupInfo>} ChunkGroupInfoMap */
+/** @typedef {Set<ChunkGroup>} AllCreatedChunkGroups */
+/** @typedef {Map<Entrypoint, Module[]>} InputEntrypointsAndModules */
+
+const ZERO_BIGINT = BigInt(0);
+const ONE_BIGINT = BigInt(1);
+
+/**
+ * @param {bigint} mask The mask to test
+ * @param {number} ordinal The ordinal of the bit to test
+ * @returns {boolean} If the ordinal-th bit is set in the mask
+ */
+const isOrdinalSetInMask = (mask, ordinal) =>
+	BigInt.asUintN(1, mask >> BigInt(ordinal)) !== ZERO_BIGINT;
+
+/**
+ * @param {ModuleGraphConnection[]} connections list of connections
+ * @param {RuntimeSpec} runtime for which runtime
+ * @returns {ConnectionState} connection state
+ */
+const getActiveStateOfConnections = (connections, runtime) => {
+	let merged = connections[0].getActiveState(runtime);
+	if (merged === true) return true;
+	for (let i = 1; i < connections.length; i++) {
+		const c = connections[i];
+		merged = ModuleGraphConnection.addConnectionStates(
+			merged,
+			c.getActiveState(runtime)
+		);
+		if (merged === true) return true;
+	}
+	return merged;
+};
+
+/**
+ * @param {Module} module module
+ * @param {ModuleGraph} moduleGraph module graph
+ * @param {RuntimeSpec} runtime runtime
+ * @param {BlockModulesMap} blockModulesMap block modules map
+ */
+const extractBlockModules = (module, moduleGraph, runtime, blockModulesMap) => {
+	/** @type {DependenciesBlock | undefined} */
+	let blockCache;
+	/** @type {BlockModulesInTuples | undefined} */
+	let modules;
+
+	/** @type {BlockModulesInTuples[]} */
+	const arrays = [];
+
+	/** @type {DependenciesBlock[]} */
+	const queue = [module];
+	while (queue.length > 0) {
+		const block = /** @type {DependenciesBlock} */ (queue.pop());
+		/** @type {Module[]} */
+		const arr = [];
+		arrays.push(arr);
+		blockModulesMap.set(block, arr);
+		for (const b of block.blocks) {
+			queue.push(b);
+		}
+	}
+
+	for (const connection of moduleGraph.getOutgoingConnections(module)) {
+		const d = connection.dependency;
+		// We skip connections without dependency
+		if (!d) continue;
+		const m = connection.module;
+		// We skip connections without Module pointer
+		if (!m) continue;
+		// We skip weak connections
+		if (connection.weak) continue;
+
+		const block = moduleGraph.getParentBlock(d);
+		let index = moduleGraph.getParentBlockIndex(d);
+
+		// deprecated fallback
+		if (index < 0) {
+			index = /** @type {DependenciesBlock} */ (block).dependencies.indexOf(d);
+		}
+
+		if (blockCache !== block) {
+			modules =
+				/** @type {BlockModulesInTuples} */
+				(
+					blockModulesMap.get(
+						(blockCache = /** @type {DependenciesBlock} */ (block))
+					)
+				);
+		}
+
+		const i = index * 3;
+		/** @type {BlockModulesInTuples} */
+		(modules)[i] = m;
+		/** @type {BlockModulesInTuples} */
+		(modules)[i + 1] = connection.getActiveState(runtime);
+		/** @type {BlockModulesInTuples} */
+		(modules)[i + 2] = connection;
+	}
+
+	for (const modules of arrays) {
+		if (modules.length === 0) continue;
+		let indexMap;
+		let length = 0;
+		outer: for (let j = 0; j < modules.length; j += 3) {
+			const m = modules[j];
+			if (m === undefined) continue;
+			const state = /** @type {ConnectionState} */ (modules[j + 1]);
+			const connection = /** @type {ModuleGraphConnection} */ (modules[j + 2]);
+			if (indexMap === undefined) {
+				let i = 0;
+				for (; i < length; i += 3) {
+					if (modules[i] === m) {
+						const merged = /** @type {ConnectionState} */ (modules[i + 1]);
+						/** @type {ModuleGraphConnection[]} */
+						(/** @type {unknown} */ (modules[i + 2])).push(connection);
+						if (merged === true) continue outer;
+						modules[i + 1] = ModuleGraphConnection.addConnectionStates(
+							merged,
+							state
+						);
+						continue outer;
+					}
+				}
+				modules[length] = m;
+				length++;
+				modules[length] = state;
+				length++;
+				/** @type {ModuleGraphConnection[]} */
+				(/** @type {unknown} */ (modules[length])) = [connection];
+				length++;
+				if (length > 30) {
+					// To avoid worse case performance, we will use an index map for
+					// linear cost access, which allows to maintain O(n) complexity
+					// while keeping allocations down to a minimum
+					indexMap = new Map();
+					for (let i = 0; i < length; i += 3) {
+						indexMap.set(modules[i], i + 1);
+					}
+				}
+			} else {
+				const idx = indexMap.get(m);
+				if (idx !== undefined) {
+					const merged = /** @type {ConnectionState} */ (modules[idx]);
+					/** @type {ModuleGraphConnection[]} */
+					(/** @type {unknown} */ (modules[idx + 1])).push(connection);
+					if (merged === true) continue;
+					modules[idx] = ModuleGraphConnection.addConnectionStates(
+						merged,
+						state
+					);
+				} else {
+					modules[length] = m;
+					length++;
+					modules[length] = state;
+					indexMap.set(m, length);
+					length++;
+					/** @type {ModuleGraphConnection[]} */
+					(
+						/** @type {unknown} */
+						(modules[length])
+					) = [connection];
+					length++;
+				}
+			}
+		}
+		modules.length = length;
+	}
+};
+
+/**
+ * @param {Logger} logger a logger
+ * @param {Compilation} compilation the compilation
+ * @param {InputEntrypointsAndModules} inputEntrypointsAndModules chunk groups which are processed with the modules
+ * @param {ChunkGroupInfoMap} chunkGroupInfoMap mapping from chunk group to available modules
+ * @param {BlockConnections} blockConnections connection for blocks
+ * @param {BlocksWithNestedBlocks} blocksWithNestedBlocks flag for blocks that have nested blocks
+ * @param {AllCreatedChunkGroups} allCreatedChunkGroups filled with all chunk groups that are created here
+ * @param {MaskByChunk} maskByChunk module content mask by chunk
+ */
+const visitModules = (
+	logger,
+	compilation,
+	inputEntrypointsAndModules,
+	chunkGroupInfoMap,
+	blockConnections,
+	blocksWithNestedBlocks,
+	allCreatedChunkGroups,
+	maskByChunk
+) => {
+	const { moduleGraph, chunkGraph, moduleMemCaches } = compilation;
+
+	const blockModulesRuntimeMap = new Map();
+
+	/** @type {BlockModulesMap | undefined} */
+	let blockModulesMap;
+
+	/** @type {Map<Module, number>} */
+	const ordinalByModule = new Map();
+
+	/**
+	 * @param {Module} module The module to look up
+	 * @returns {number} The ordinal of the module in masks
+	 */
+	const getModuleOrdinal = module => {
+		let ordinal = ordinalByModule.get(module);
+		if (ordinal === undefined) {
+			ordinal = ordinalByModule.size;
+			ordinalByModule.set(module, ordinal);
+		}
+		return ordinal;
+	};
+
+	for (const chunk of compilation.chunks) {
+		let mask = ZERO_BIGINT;
+		for (const m of chunkGraph.getChunkModulesIterable(chunk)) {
+			mask |= ONE_BIGINT << BigInt(getModuleOrdinal(m));
+		}
+		maskByChunk.set(chunk, mask);
+	}
+
+	/**
+	 * @param {DependenciesBlock} block block
+	 * @param {RuntimeSpec} runtime runtime
+	 * @returns {BlockModulesInFlattenTuples} block modules in flatten tuples
+	 */
+	const getBlockModules = (block, runtime) => {
+		blockModulesMap = blockModulesRuntimeMap.get(runtime);
+		if (blockModulesMap === undefined) {
+			blockModulesMap = new Map();
+			blockModulesRuntimeMap.set(runtime, blockModulesMap);
+		}
+		let blockModules = blockModulesMap.get(block);
+		if (blockModules !== undefined) return blockModules;
+		const module = /** @type {Module} */ (block.getRootBlock());
+		const memCache = moduleMemCaches && moduleMemCaches.get(module);
+		if (memCache !== undefined) {
+			const map = memCache.provide(
+				"bundleChunkGraph.blockModules",
+				runtime,
+				() => {
+					logger.time("visitModules: prepare");
+					const map = new Map();
+					extractBlockModules(module, moduleGraph, runtime, map);
+					logger.timeAggregate("visitModules: prepare");
+					return map;
+				}
+			);
+			for (const [block, blockModules] of map)
+				blockModulesMap.set(block, blockModules);
+			return map.get(block);
+		}
+		logger.time("visitModules: prepare");
+		extractBlockModules(module, moduleGraph, runtime, blockModulesMap);
+		blockModules =
+			/** @type {BlockModulesInFlattenTuples} */
+			(blockModulesMap.get(block));
+		logger.timeAggregate("visitModules: prepare");
+		return blockModules;
+	};
+
+	let statProcessedQueueItems = 0;
+	let statProcessedBlocks = 0;
+	let statConnectedChunkGroups = 0;
+	let statProcessedChunkGroupsForMerging = 0;
+	let statMergedAvailableModuleSets = 0;
+	const statForkedAvailableModules = 0;
+	const statForkedAvailableModulesCount = 0;
+	const statForkedAvailableModulesCountPlus = 0;
+	const statForkedMergedModulesCount = 0;
+	const statForkedMergedModulesCountPlus = 0;
+	const statForkedResultModulesCount = 0;
+	let statChunkGroupInfoUpdated = 0;
+	let statChildChunkGroupsReconnected = 0;
+
+	let nextChunkGroupIndex = 0;
+	let nextFreeModulePreOrderIndex = 0;
+	let nextFreeModulePostOrderIndex = 0;
+
+	/** @type {Map<DependenciesBlock, ChunkGroupInfo>} */
+	const blockChunkGroups = new Map();
+
+	/** @type {Map<ChunkGroupInfo, DependenciesBlock>} */
+	const blockByChunkGroups = new Map();
+
+	/** @type {Map<string, ChunkGroupInfo>} */
+	const namedChunkGroups = new Map();
+
+	/** @type {Map<string, ChunkGroupInfo>} */
+	const namedAsyncEntrypoints = new Map();
+
+	/** @type {Set<ChunkGroupInfo>} */
+	const outdatedOrderIndexChunkGroups = new Set();
+
+	const ADD_AND_ENTER_ENTRY_MODULE = 0;
+	const ADD_AND_ENTER_MODULE = 1;
+	const ENTER_MODULE = 2;
+	const PROCESS_BLOCK = 3;
+	const PROCESS_ENTRY_BLOCK = 4;
+	const LEAVE_MODULE = 5;
+
+	/** @type {QueueItem[]} */
+	let queue = [];
+
+	/** @type {Map<ChunkGroupInfo, Set<ChunkGroupInfo>>} */
+	const queueConnect = new Map();
+	/** @type {Set<ChunkGroupInfo>} */
+	const chunkGroupsForCombining = new Set();
+
+	// Fill queue with entrypoint modules
+	// Create ChunkGroupInfo for entrypoints
+	for (const [chunkGroup, modules] of inputEntrypointsAndModules) {
+		const runtime = getEntryRuntime(
+			compilation,
+			/** @type {string} */ (chunkGroup.name),
+			chunkGroup.options
+		);
+		/** @type {ChunkGroupInfo} */
+		const chunkGroupInfo = {
+			chunkGroup,
+			runtime,
+			minAvailableModules: undefined,
+			availableModulesToBeMerged: [],
+			skippedItems: undefined,
+			resultingAvailableModules: undefined,
+			children: undefined,
+			availableSources: undefined,
+			availableChildren: undefined,
+			preOrderIndex: 0,
+			postOrderIndex: 0,
+			chunkLoading:
+				chunkGroup.options.chunkLoading !== undefined
+					? chunkGroup.options.chunkLoading !== false
+					: compilation.outputOptions.chunkLoading !== false,
+			asyncChunks:
+				chunkGroup.options.asyncChunks !== undefined
+					? chunkGroup.options.asyncChunks
+					: compilation.outputOptions.asyncChunks !== false
+		};
+		chunkGroup.index = nextChunkGroupIndex++;
+		if (chunkGroup.getNumberOfParents() > 0) {
+			// minAvailableModules for child entrypoints are unknown yet, set to undefined.
+			// This means no module is added until other sets are merged into
+			// this minAvailableModules (by the parent entrypoints)
+			const skippedItems = new Set(modules);
+			chunkGroupInfo.skippedItems = skippedItems;
+			chunkGroupsForCombining.add(chunkGroupInfo);
+		} else {
+			// The application may start here: We start with an empty list of available modules
+			chunkGroupInfo.minAvailableModules = ZERO_BIGINT;
+			const chunk = chunkGroup.getEntrypointChunk();
+			for (const module of modules) {
+				queue.push({
+					action: ADD_AND_ENTER_MODULE,
+					block: module,
+					module,
+					chunk,
+					chunkGroup,
+					chunkGroupInfo
+				});
+			}
+		}
+		chunkGroupInfoMap.set(chunkGroup, chunkGroupInfo);
+		if (chunkGroup.name) {
+			namedChunkGroups.set(chunkGroup.name, chunkGroupInfo);
+		}
+	}
+	// Fill availableSources with parent-child dependencies between entrypoints
+	for (const chunkGroupInfo of chunkGroupsForCombining) {
+		const { chunkGroup } = chunkGroupInfo;
+		chunkGroupInfo.availableSources = new Set();
+		for (const parent of chunkGroup.parentsIterable) {
+			const parentChunkGroupInfo =
+				/** @type {ChunkGroupInfo} */
+				(chunkGroupInfoMap.get(parent));
+			chunkGroupInfo.availableSources.add(parentChunkGroupInfo);
+			if (parentChunkGroupInfo.availableChildren === undefined) {
+				parentChunkGroupInfo.availableChildren = new Set();
+			}
+			parentChunkGroupInfo.availableChildren.add(chunkGroupInfo);
+		}
+	}
+	// pop() is used to read from the queue
+	// so it need to be reversed to be iterated in
+	// correct order
+	queue.reverse();
+
+	/** @type {Set<ChunkGroupInfo>} */
+	const outdatedChunkGroupInfo = new Set();
+	/** @type {Set<ChunkGroupInfo>} */
+	const chunkGroupsForMerging = new Set();
+	/** @type {QueueItem[]} */
+	let queueDelayed = [];
+
+	/** @type {[Module, ModuleGraphConnection[]][]} */
+	const skipConnectionBuffer = [];
+	/** @type {Module[]} */
+	const skipBuffer = [];
+	/** @type {QueueItem[]} */
+	const queueBuffer = [];
+
+	/** @type {Module} */
+	let module;
+	/** @type {Chunk} */
+	let chunk;
+	/** @type {ChunkGroup} */
+	let chunkGroup;
+	/** @type {DependenciesBlock} */
+	let block;
+	/** @type {ChunkGroupInfo} */
+	let chunkGroupInfo;
+
+	// For each async Block in graph
+	/**
+	 * @param {AsyncDependenciesBlock} b iterating over each Async DepBlock
+	 * @returns {void}
+	 */
+	const iteratorBlock = b => {
+		// 1. We create a chunk group with single chunk in it for this Block
+		// but only once (blockChunkGroups map)
+		/** @type {ChunkGroupInfo | undefined} */
+		let cgi = blockChunkGroups.get(b);
+		/** @type {ChunkGroup | undefined} */
+		let c;
+		/** @type {Entrypoint | undefined} */
+		let entrypoint;
+		const entryOptions = b.groupOptions && b.groupOptions.entryOptions;
+		if (cgi === undefined) {
+			const chunkName = (b.groupOptions && b.groupOptions.name) || b.chunkName;
+			if (entryOptions) {
+				cgi = namedAsyncEntrypoints.get(/** @type {string} */ (chunkName));
+				if (!cgi) {
+					entrypoint = compilation.addAsyncEntrypoint(
+						entryOptions,
+						module,
+						/** @type {DependencyLocation} */ (b.loc),
+						/** @type {string} */ (b.request)
+					);
+					maskByChunk.set(entrypoint.chunks[0], ZERO_BIGINT);
+					entrypoint.index = nextChunkGroupIndex++;
+					cgi = {
+						chunkGroup: entrypoint,
+						runtime: entrypoint.options.runtime || entrypoint.name,
+						minAvailableModules: ZERO_BIGINT,
+						availableModulesToBeMerged: [],
+						skippedItems: undefined,
+						resultingAvailableModules: undefined,
+						children: undefined,
+						availableSources: undefined,
+						availableChildren: undefined,
+						preOrderIndex: 0,
+						postOrderIndex: 0,
+						chunkLoading:
+							entryOptions.chunkLoading !== undefined
+								? entryOptions.chunkLoading !== false
+								: chunkGroupInfo.chunkLoading,
+						asyncChunks:
+							entryOptions.asyncChunks !== undefined
+								? entryOptions.asyncChunks
+								: chunkGroupInfo.asyncChunks
+					};
+					chunkGroupInfoMap.set(entrypoint, cgi);
+
+					chunkGraph.connectBlockAndChunkGroup(b, entrypoint);
+					if (chunkName) {
+						namedAsyncEntrypoints.set(chunkName, cgi);
+					}
+				} else {
+					entrypoint = /** @type {Entrypoint} */ (cgi.chunkGroup);
+					// TODO merge entryOptions
+					entrypoint.addOrigin(
+						module,
+						/** @type {DependencyLocation} */ (b.loc),
+						/** @type {string} */ (b.request)
+					);
+					chunkGraph.connectBlockAndChunkGroup(b, entrypoint);
+				}
+
+				// 2. We enqueue the DependenciesBlock for traversal
+				queueDelayed.push({
+					action: PROCESS_ENTRY_BLOCK,
+					block: b,
+					module,
+					chunk: entrypoint.chunks[0],
+					chunkGroup: entrypoint,
+					chunkGroupInfo: cgi
+				});
+			} else if (!chunkGroupInfo.asyncChunks || !chunkGroupInfo.chunkLoading) {
+				// Just queue the block into the current chunk group
+				queue.push({
+					action: PROCESS_BLOCK,
+					block: b,
+					module,
+					chunk,
+					chunkGroup,
+					chunkGroupInfo
+				});
+			} else {
+				cgi = chunkName ? namedChunkGroups.get(chunkName) : undefined;
+				if (!cgi) {
+					c = compilation.addChunkInGroup(
+						b.groupOptions || b.chunkName,
+						module,
+						/** @type {DependencyLocation} */ (b.loc),
+						/** @type {string} */ (b.request)
+					);
+					maskByChunk.set(c.chunks[0], ZERO_BIGINT);
+					c.index = nextChunkGroupIndex++;
+					cgi = {
+						chunkGroup: c,
+						runtime: chunkGroupInfo.runtime,
+						minAvailableModules: undefined,
+						availableModulesToBeMerged: [],
+						skippedItems: undefined,
+						resultingAvailableModules: undefined,
+						children: undefined,
+						availableSources: undefined,
+						availableChildren: undefined,
+						preOrderIndex: 0,
+						postOrderIndex: 0,
+						chunkLoading: chunkGroupInfo.chunkLoading,
+						asyncChunks: chunkGroupInfo.asyncChunks
+					};
+					allCreatedChunkGroups.add(c);
+					chunkGroupInfoMap.set(c, cgi);
+					if (chunkName) {
+						namedChunkGroups.set(chunkName, cgi);
+					}
+				} else {
+					c = cgi.chunkGroup;
+					if (c.isInitial()) {
+						compilation.errors.push(
+							new AsyncDependencyToInitialChunkError(
+								/** @type {string} */ (chunkName),
+								module,
+								/** @type {DependencyLocation} */ (b.loc)
+							)
+						);
+						c = chunkGroup;
+					} else {
+						c.addOptions(b.groupOptions);
+					}
+					c.addOrigin(
+						module,
+						/** @type {DependencyLocation} */ (b.loc),
+						/** @type {string} */ (b.request)
+					);
+				}
+				blockConnections.set(b, []);
+			}
+			blockChunkGroups.set(b, /** @type {ChunkGroupInfo} */ (cgi));
+			blockByChunkGroups.set(/** @type {ChunkGroupInfo} */ (cgi), b);
+		} else if (entryOptions) {
+			entrypoint = /** @type {Entrypoint} */ (cgi.chunkGroup);
+		} else {
+			c = cgi.chunkGroup;
+		}
+
+		if (c !== undefined) {
+			// 2. We store the connection for the block
+			// to connect it later if needed
+			/** @type {BlockChunkGroupConnection[]} */
+			(blockConnections.get(b)).push({
+				originChunkGroupInfo: chunkGroupInfo,
+				chunkGroup: c
+			});
+
+			// 3. We enqueue the chunk group info creation/updating
+			let connectList = queueConnect.get(chunkGroupInfo);
+			if (connectList === undefined) {
+				connectList = new Set();
+				queueConnect.set(chunkGroupInfo, connectList);
+			}
+			connectList.add(/** @type {ChunkGroupInfo} */ (cgi));
+
+			// TODO check if this really need to be done for each traversal
+			// or if it is enough when it's queued when created
+			// 4. We enqueue the DependenciesBlock for traversal
+			queueDelayed.push({
+				action: PROCESS_BLOCK,
+				block: b,
+				module,
+				chunk: c.chunks[0],
+				chunkGroup: c,
+				chunkGroupInfo: /** @type {ChunkGroupInfo} */ (cgi)
+			});
+		} else if (entrypoint !== undefined) {
+			chunkGroupInfo.chunkGroup.addAsyncEntrypoint(entrypoint);
+		}
+	};
+
+	/**
+	 * @param {DependenciesBlock} block the block
+	 * @returns {void}
+	 */
+	const processBlock = block => {
+		statProcessedBlocks++;
+		// get prepared block info
+		const blockModules = getBlockModules(block, chunkGroupInfo.runtime);
+
+		if (blockModules !== undefined) {
+			const minAvailableModules =
+				/** @type {bigint} */
+				(chunkGroupInfo.minAvailableModules);
+			// Buffer items because order need to be reversed to get indices correct
+			// Traverse all referenced modules
+			for (let i = 0, len = blockModules.length; i < len; i += 3) {
+				const refModule = /** @type {Module} */ (blockModules[i]);
+				// For single comparisons this might be cheaper
+				const isModuleInChunk = chunkGraph.isModuleInChunk(refModule, chunk);
+
+				if (isModuleInChunk) {
+					// skip early if already connected
+					continue;
+				}
+
+				const refOrdinal = /** @type {number} */ getModuleOrdinal(refModule);
+				const activeState = /** @type {ConnectionState} */ (
+					blockModules[i + 1]
+				);
+				if (activeState !== true) {
+					const connections = /** @type {ModuleGraphConnection[]} */ (
+						blockModules[i + 2]
+					);
+					skipConnectionBuffer.push([refModule, connections]);
+					// We skip inactive connections
+					if (activeState === false) continue;
+				} else if (isOrdinalSetInMask(minAvailableModules, refOrdinal)) {
+					// already in parent chunks, skip it for now
+					skipBuffer.push(refModule);
+					continue;
+				}
+				// 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_MODULE : PROCESS_BLOCK,
+					block: refModule,
+					module: refModule,
+					chunk,
+					chunkGroup,
+					chunkGroupInfo
+				});
+			}
+			// Add buffered items in reverse order
+			if (skipConnectionBuffer.length > 0) {
+				let { skippedModuleConnections } = chunkGroupInfo;
+				if (skippedModuleConnections === undefined) {
+					chunkGroupInfo.skippedModuleConnections = skippedModuleConnections =
+						new Set();
+				}
+				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 = getBlockModules(block, chunkGroupInfo.runtime);
+
+		if (blockModules !== undefined) {
+			// Traverse all referenced modules in reverse order
+			for (let i = blockModules.length - 3; i >= 0; i -= 3) {
+				const refModule = /** @type {Module} */ (blockModules[i]);
+				const activeState = /** @type {ConnectionState} */ (
+					blockModules[i + 1]
+				);
+				// enqueue, then add and enter to be in the correct order
+				// this is relevant with circular dependencies
+				queue.push({
+					action:
+						activeState === true ? ADD_AND_ENTER_ENTRY_MODULE : PROCESS_BLOCK,
+					block: refModule,
+					module: refModule,
+					chunk,
+					chunkGroup,
+					chunkGroupInfo
+				});
+			}
+		}
+
+		// 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 = /** @type {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: {
+					const isModuleInChunk = chunkGraph.isModuleInChunk(module, chunk);
+
+					if (isModuleInChunk) {
+						// already connected, skip it
+						break;
+					}
+					// We connect Module and Chunk
+					chunkGraph.connectChunkAndModule(chunk, module);
+					const moduleOrdinal = getModuleOrdinal(module);
+					let chunkMask = /** @type {bigint} */ (maskByChunk.get(chunk));
+					chunkMask |= ONE_BIGINT << BigInt(moduleOrdinal);
+					maskByChunk.set(chunk, chunkMask);
+				}
+				// 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;
+				}
+			}
+		}
+	};
+
+	/**
+	 * @param {ChunkGroupInfo} chunkGroupInfo The info object for the chunk group
+	 * @returns {bigint} The mask of available modules after the chunk group
+	 */
+	const calculateResultingAvailableModules = chunkGroupInfo => {
+		if (chunkGroupInfo.resultingAvailableModules !== undefined)
+			return chunkGroupInfo.resultingAvailableModules;
+
+		let resultingAvailableModules = /** @type {bigint} */ (
+			chunkGroupInfo.minAvailableModules
+		);
+
+		// add the modules from the chunk group to the set
+		for (const chunk of chunkGroupInfo.chunkGroup.chunks) {
+			const mask = /** @type {bigint} */ (maskByChunk.get(chunk));
+			resultingAvailableModules |= mask;
+		}
+
+		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;
+			const cachedMinAvailableModules = info.minAvailableModules;
+			let minAvailableModules = cachedMinAvailableModules;
+
+			statMergedAvailableModuleSets += availableModulesToBeMerged.length;
+
+			for (const availableModules of availableModulesToBeMerged) {
+				if (minAvailableModules === undefined) {
+					minAvailableModules = availableModules;
+				} else {
+					minAvailableModules &= availableModules;
+				}
+			}
+
+			const changed = minAvailableModules !== cachedMinAvailableModules;
+
+			availableModulesToBeMerged.length = 0;
+			if (changed) {
+				info.minAvailableModules = minAvailableModules;
+				info.resultingAvailableModules = undefined;
+				outdatedChunkGroupInfo.add(info);
+			}
+		}
+		chunkGroupsForMerging.clear();
+	};
+
+	const processChunkGroupsForCombining = () => {
+		for (const info of chunkGroupsForCombining) {
+			for (const source of /** @type {Set<ChunkGroupInfo>} */ (
+				info.availableSources
+			)) {
+				if (source.minAvailableModules === undefined) {
+					chunkGroupsForCombining.delete(info);
+					break;
+				}
+			}
+		}
+
+		for (const info of chunkGroupsForCombining) {
+			let availableModules = ZERO_BIGINT;
+			// combine minAvailableModules from all resultingAvailableModules
+			for (const source of /** @type {Set<ChunkGroupInfo>} */ (
+				info.availableSources
+			)) {
+				const resultingAvailableModules =
+					calculateResultingAvailableModules(source);
+				availableModules |= resultingAvailableModules;
+			}
+			info.minAvailableModules = availableModules;
+			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 =
+					/** @type {bigint} */
+					(info.minAvailableModules);
+				for (const module of info.skippedItems) {
+					const ordinal = getModuleOrdinal(module);
+					if (!isOrdinalSetInMask(minAvailableModules, ordinal)) {
+						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 =
+					/** @type {bigint} */
+					(info.minAvailableModules);
+				for (const entry of info.skippedModuleConnections) {
+					const [module, connections] = entry;
+					const activeState = getActiveStateOfConnections(
+						connections,
+						info.runtime
+					);
+					if (activeState === false) continue;
+					if (activeState === true) {
+						const ordinal = getModuleOrdinal(module);
+						info.skippedModuleConnections.delete(entry);
+						if (isOrdinalSetInMask(minAvailableModules, ordinal)) {
+							/** @type {NonNullable<ChunkGroupInfo["skippedItems"]>} */
+							(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);
+				}
+			}
+			outdatedOrderIndexChunkGroups.add(info);
+		}
+		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.timeAggregateEnd("visitModules: prepare");
+		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;
+		}
+	}
+
+	for (const info of outdatedOrderIndexChunkGroups) {
+		const { chunkGroup, runtime } = info;
+
+		const block = blockByChunkGroups.get(info);
+
+		if (!block) {
+			continue;
+		}
+
+		let preOrderIndex = 0;
+		let postOrderIndex = 0;
+
+		/**
+		 * @param {DependenciesBlock} current current
+		 * @param {BlocksWithNestedBlocks} visited visited dependencies blocks
+		 */
+		const process = (current, visited) => {
+			const blockModules = getBlockModules(current, runtime);
+			if (blockModules === undefined) {
+				return;
+			}
+
+			for (let i = 0, len = blockModules.length; i < len; i += 3) {
+				const activeState = /** @type {ConnectionState} */ (
+					blockModules[i + 1]
+				);
+				if (activeState === false) {
+					continue;
+				}
+				const refModule = /** @type {Module} */ (blockModules[i]);
+				if (visited.has(refModule)) {
+					continue;
+				}
+
+				visited.add(refModule);
+
+				if (refModule) {
+					chunkGroup.setModulePreOrderIndex(refModule, preOrderIndex++);
+					process(refModule, visited);
+					chunkGroup.setModulePostOrderIndex(refModule, postOrderIndex++);
+				}
+			}
+		};
+
+		process(block, new Set());
+	}
+	outdatedOrderIndexChunkGroups.clear();
+	ordinalByModule.clear();
+
+	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 {BlocksWithNestedBlocks} blocksWithNestedBlocks flag for blocks that have nested blocks
+ * @param {BlockConnections} blockConnections connection for blocks
+ * @param {MaskByChunk} maskByChunk mapping from chunk to module mask
+ */
+const connectChunkGroups = (
+	compilation,
+	blocksWithNestedBlocks,
+	blockConnections,
+	maskByChunk
+) => {
+	const { chunkGraph } = compilation;
+
+	/**
+	 * Helper function to check if all modules of a chunk are available
+	 * @param {ChunkGroup} chunkGroup the chunkGroup to scan
+	 * @param {bigint} 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) {
+			const chunkMask = /** @type {bigint} */ (maskByChunk.get(chunk));
+			if ((chunkMask & availableModules) !== chunkMask) 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,
+					/** @type {bigint} */ (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 {InputEntrypointsAndModules} inputEntrypointsAndModules chunk groups which are processed with the modules
+ * @returns {void}
+ */
+const buildChunkGraph = (compilation, inputEntrypointsAndModules) => {
+	const logger = compilation.getLogger("webpack.buildChunkGraph");
+
+	// SHARED STATE
+
+	/** @type {BlockConnections} */
+	const blockConnections = new Map();
+
+	/** @type {AllCreatedChunkGroups} */
+	const allCreatedChunkGroups = new Set();
+
+	/** @type {ChunkGroupInfoMap} */
+	const chunkGroupInfoMap = new Map();
+
+	/** @type {BlocksWithNestedBlocks} */
+	const blocksWithNestedBlocks = new Set();
+
+	/** @type {MaskByChunk} */
+	const maskByChunk = new Map();
+
+	// PART ONE
+
+	logger.time("visitModules");
+	visitModules(
+		logger,
+		compilation,
+		inputEntrypointsAndModules,
+		chunkGroupInfoMap,
+		blockConnections,
+		blocksWithNestedBlocks,
+		allCreatedChunkGroups,
+		maskByChunk
+	);
+	logger.timeEnd("visitModules");
+
+	// PART TWO
+
+	logger.time("connectChunkGroups");
+	connectChunkGroups(
+		compilation,
+		blocksWithNestedBlocks,
+		blockConnections,
+		maskByChunk
+	);
+	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;