add hashSalt option

sokra · sokra · commit ce76858334c4 · 2016-06-04T20:03:42.000+02:00
fixes webpack#2544
diff --git 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);
