Merge pull request #2 from dsebastien/master

Fix for #1 and minor tweaks

.gitignore

@@ -1,5 +1,10 @@
-node_modules
-
+# Own
 example/dest/*
 /dist
 !example/dest/index.html
+
+# Node
+node_modules
+
+# IDEs
+.idea

.jshintignore

@@ -0,0 +1,3 @@
+/example
+/dist
+

package.json

@@ -4,7 +4,8 @@
   "description": "Plugin to replace a standard webpack chunkhash with md5.",
   "main": "index.js",
   "scripts": {
-    "pretest": "jshint *.js spec plugin example/js",
+    "clean": "rimraf dist",
+    "pretest": "jshint",
     "test": "jasmine-node --captureExceptions spec"
   },
   "repository": {
@@ -18,6 +19,11 @@
     "md5"
   ],
   "author": "Kirill Ermolov",
+  "contributors": [{
+    "name": "Sebastien Dubois",
+    "email": "seb@dsebastien.net",
+    "url": "https://www.dsebastien.net"
+  }],
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/erm0l0v/webpack-md5-hash/issues"

plugin/webpack_md5_hash.js

@@ -28,7 +28,7 @@ function WebpackMd5Hash () {
 WebpackMd5Hash.prototype.apply = function(compiler) {
     compiler.plugin("compilation", function(compilation) {
         compilation.plugin("chunk-hash", function(chunk, chunkHash) {
-            var source = chunk.modules.sort(compareModules).map(getModuleSource).reduce(concatenateSource);
+            var source = chunk.modules.sort(compareModules).map(getModuleSource).reduce(concatenateSource, ''); // we provide an initialValue in case there is an empty module source. Ref: http://es5.github.io/#x15.4.4.21
             var chunk_hash = md5(source);
             chunkHash.digest = function () {
                 return chunk_hash;
@@ -37,4 +37,4 @@ WebpackMd5Hash.prototype.apply = function(compiler) {
     });
 };
 
-module.exports = WebpackMd5Hash;
+module.exports = WebpackMd5Hash;