From ce76858334c47ec2ae08b6a9036e78fb31559333 Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Sat, 4 Jun 2016 20:03:42 +0200
Subject: [PATCH] add hashSalt option

fixes #2544
---
 lib/Compilation.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Compilation.js b/lib/Compilation.js
index 5e2e04c7d..090614615 100644
--- a/lib/Compilation.js
+++ b/lib/Compilation.js
@@ -769,6 +769,8 @@ Compilation.prototype.createHash = function createHash() {
 	var hashDigest = outputOptions.hashDigest;
 	var hashDigestLength = outputOptions.hashDigestLength;
 	var hash = require("crypto").createHash(hashFunction);
+	if(outputOptions.hashSalt)
+		hash.update(outputOptions.hashSalt);
 	this.mainTemplate.updateHash(hash);
 	this.chunkTemplate.updateHash(hash);
 	this.moduleTemplate.updateHash(hash);
@@ -782,6 +784,8 @@ Compilation.prototype.createHash = function createHash() {
 	for(i = 0; i < chunks.length; i++) {
 		chunk = chunks[i];
 		var chunkHash = require("crypto").createHash(hashFunction);
+		if(outputOptions.hashSalt)
+			hash.update(outputOptions.hashSalt);
 		chunk.updateHash(chunkHash);
 		if(chunk.entry) {
 			this.mainTemplate.updateHashForChunk(chunkHash, chunk);