From 9df98e65f842cf3acae09cbdd969966f42d64469 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Sat, 14 Oct 2017 18:40:54 +0200
Subject: update dependencies

---
 .../webpack/lib/optimize/CommonsChunkPlugin.js     | 53 +++++++++++++++-------
 1 file changed, 37 insertions(+), 16 deletions(-)

(limited to 'node_modules/webpack/lib/optimize/CommonsChunkPlugin.js')

diff --git a/node_modules/webpack/lib/optimize/CommonsChunkPlugin.js b/node_modules/webpack/lib/optimize/CommonsChunkPlugin.js
index 465b7ff7a..ab7b69f4a 100644
--- a/node_modules/webpack/lib/optimize/CommonsChunkPlugin.js
+++ b/node_modules/webpack/lib/optimize/CommonsChunkPlugin.js
@@ -4,6 +4,7 @@
 */
 "use strict";
 let nextIdent = 0;
+
 class CommonsChunkPlugin {
 	constructor(options) {
 		if(arguments.length > 1) {
@@ -31,6 +32,7 @@ The available options are:
 		this.minChunks = normalizedOptions.minChunks;
 		this.selectedChunks = normalizedOptions.selectedChunks;
 		this.children = normalizedOptions.children;
+		this.deepChildren = normalizedOptions.deepChildren;
 		this.async = normalizedOptions.async;
 		this.minSize = normalizedOptions.minSize;
 		this.ident = __filename + (nextIdent++);
@@ -76,6 +78,7 @@ You can however specify the name of the async chunk by passing the desired strin
 			minChunks: options.minChunks,
 			selectedChunks: options.chunks,
 			children: options.children,
+			deepChildren: options.deepChildren,
 			async: options.async,
 			minSize: options.minSize
 		};
@@ -211,6 +214,37 @@ You can however specify the name of the async chunk by passing the desired strin
 Take a look at the "name"/"names" or async/children option.`);
 	}
 
+	getAffectedUnnamedChunks(affectedChunks, targetChunk, asyncOption) {
+		let chunks = targetChunk.chunks;
+		chunks && chunks.forEach((chunk) => {
+			if(chunk.isInitial()) {
+				return;
+			}
+			// If all the parents of a chunk are either
+			// a) the target chunk we started with
+			// b) themselves affected chunks
+			// we can assume that this chunk is an affected chunk too, as there is no way a chunk that
+			// isn't only depending on the target chunk is a parent of the chunk tested
+			if(asyncOption || chunk.parents.every((parentChunk) => parentChunk === targetChunk || affectedChunks.has(parentChunk))) {
+				// This check not only dedupes the affectedChunks but also guarantees we avoid endless loops
+				if(!affectedChunks.has(chunk) || affectedChunks.values().next().value === chunk) {
+					// We mutate the affected chunks before going deeper, so the deeper levels and other branches
+					// Have the information of this chunk being affected for their assertion if a chunk should
+					// not be affected
+					affectedChunks.add(chunk);
+
+					// We recurse down to all the children of the chunk, applying the same assumption.
+					// This guarantees that if a chunk should be an affected chunk,
+					// at the latest the last connection to the same chunk meets the
+					// condition to add it to the affected chunks.
+					if(this.deepChildren === true) {
+						this.getAffectedUnnamedChunks(affectedChunks, chunk, asyncOption);
+					}
+				}
+			}
+		});
+	}
+
 	getAffectedChunks(compilation, allChunks, targetChunk, targetChunks, currentIndex, selectedChunks, asyncOption, children) {
 		const asyncOrNoSelectedChunk = children || asyncOption;
 
@@ -223,22 +257,9 @@ Take a look at the "name"/"names" or async/children option.`);
 		}
 
 		if(asyncOrNoSelectedChunk) {
-			// nothing to do here
-			if(!targetChunk.chunks) {
-				return [];
-			}
-
-			return targetChunk.chunks.filter((chunk) => {
-				// we only are interested in on-demand chunks
-				if(chunk.isInitial())
-					return false;
-
-				// we can only move modules from this chunk if the "commonChunk" is the only parent
-				if(!asyncOption)
-					return chunk.parents.length === 1;
-
-				return true;
-			});
+			let affectedChunks = new Set();
+			this.getAffectedUnnamedChunks(affectedChunks, targetChunk, asyncOption);
+			return Array.from(affectedChunks);
 		}
 
 		/**
-- 
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