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node_modules/webpack/lib/optimize/EnsureChunkConditionsPlugin.js

@@ -4,37 +4,67 @@
 */
 "use strict";
 
-class EnsureChunkConditionsPlugin {
+const GraphHelpers = require("../GraphHelpers");
 
+class EnsureChunkConditionsPlugin {
 	apply(compiler) {
-		compiler.plugin("compilation", (compilation) => {
-			const triesMap = new Map();
-			compilation.plugin(["optimize-chunks-basic", "optimize-extracted-chunks-basic"], (chunks) => {
-				let changed = false;
-				chunks.forEach((chunk) => {
-					chunk.forEachModule((module) => {
-						if(!module.chunkCondition) return;
-						if(!module.chunkCondition(chunk)) {
-							let usedChunks = triesMap.get(module);
-							if(!usedChunks) triesMap.set(module, usedChunks = new Set());
-							usedChunks.add(chunk);
-							const newChunks = [];
-							chunk.parents.forEach((parent) => {
-								if(!usedChunks.has(parent)) {
-									parent.addModule(module);
-									module.addChunk(parent);
-									newChunks.push(parent);
+		compiler.hooks.compilation.tap(
+			"EnsureChunkConditionsPlugin",
+			compilation => {
+				const handler = chunks => {
+					let changed = false;
+					for (const module of compilation.modules) {
+						if (!module.chunkCondition) continue;
+						const sourceChunks = new Set();
+						const chunkGroups = new Set();
+						for (const chunk of module.chunksIterable) {
+							if (!module.chunkCondition(chunk)) {
+								sourceChunks.add(chunk);
+								for (const group of chunk.groupsIterable) {
+									chunkGroups.add(group);
 								}
-							});
-							module.rewriteChunkInReasons(chunk, newChunks);
-							chunk.removeModule(module);
-							changed = true;
+							}
 						}
-					});
-				});
-				if(changed) return true;
-			});
-		});
+						if (sourceChunks.size === 0) continue;
+						const targetChunks = new Set();
+						chunkGroupLoop: for (const chunkGroup of chunkGroups) {
+							// Can module be placed in a chunk of this group?
+							for (const chunk of chunkGroup.chunks) {
+								if (module.chunkCondition(chunk)) {
+									targetChunks.add(chunk);
+									continue chunkGroupLoop;
+								}
+							}
+							// We reached the entrypoint: fail
+							if (chunkGroup.isInitial()) {
+								throw new Error(
+									"Cannot fullfil chunk condition of " + module.identifier()
+								);
+							}
+							// Try placing in all parents
+							for (const group of chunkGroup.parentsIterable) {
+								chunkGroups.add(group);
+							}
+						}
+						for (const sourceChunk of sourceChunks) {
+							GraphHelpers.disconnectChunkAndModule(sourceChunk, module);
+						}
+						for (const targetChunk of targetChunks) {
+							GraphHelpers.connectChunkAndModule(targetChunk, module);
+						}
+					}
+					if (changed) return true;
+				};
+				compilation.hooks.optimizeChunksBasic.tap(
+					"EnsureChunkConditionsPlugin",
+					handler
+				);
+				compilation.hooks.optimizeExtractedChunksBasic.tap(
+					"EnsureChunkConditionsPlugin",
+					handler
+				);
+			}
+		);
 	}
 }
 module.exports = EnsureChunkConditionsPlugin;