added HashedModuleIdsPlugin

sokra · sokra · commit 5aeef4a79217 · 2015-11-29T20:16:01.000+01:00
diff --git a/lib/HashedModuleIdsPlugin.js b/lib/HashedModuleIdsPlugin.js
@@ -0,0 +1,34 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+function HashedModuleIdsPlugin(options) {
+	this.options = options || {};
+	this.options.hashFunction = this.options.hashFunction || "md5";
+	this.options.hashDigest = this.options.hashDigest || "base64";
+	this.options.hashDigestLength = this.options.hashDigestLength || 4;
+}
+module.exports = HashedModuleIdsPlugin;
+HashedModuleIdsPlugin.prototype.apply = function(compiler) {
+	var options = this.options;
+	compiler.plugin("compilation", function(compilation) {
+		var usedIds = {};
+		compilation.plugin("before-module-ids", function(modules) {
+			modules.forEach(function(module) {
+				if(module.id === null && module.libIdent) {
+					var id = module.libIdent({
+						context: this.options.context || compiler.options.context
+					});
+					var hash = require("crypto").createHash(options.hashFunction);
+					hash.update(id);
+					id = hash.digest(options.hashDigest);
+					var len = options.hashDigestLength;
+					while(usedIds[id.substr(0, len)])
+						len++;
+					module.id = id.substr(0, len);
+					usedIds[module.id] = true;
+				}
+			}, this);
+		}.bind(this));
+	}.bind(this));
+};
diff --git a/lib/webpack.js b/lib/webpack.js
@@ -87,7 +87,8 @@ exportPlugins(exports, ".", [
 	"DllPlugin",
 	"DllReferencePlugin",
 	"LoaderOptionsPlugin",
-	"NamedModulesPlugin"
+	"NamedModulesPlugin",
+	"HashedModuleIdsPlugin"
 ]);
 exportPlugins(exports.optimize = {}, "./optimize", [
 	"AggressiveMergingPlugin",
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file1.js b/test/configCases/hash-length/hashed-module-ids/files/file1.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file10.js b/test/configCases/hash-length/hashed-module-ids/files/file10.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file11.js b/test/configCases/hash-length/hashed-module-ids/files/file11.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file12.js b/test/configCases/hash-length/hashed-module-ids/files/file12.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file13.js b/test/configCases/hash-length/hashed-module-ids/files/file13.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file14.js b/test/configCases/hash-length/hashed-module-ids/files/file14.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file15.js b/test/configCases/hash-length/hashed-module-ids/files/file15.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file2.js b/test/configCases/hash-length/hashed-module-ids/files/file2.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file3.js b/test/configCases/hash-length/hashed-module-ids/files/file3.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file4.js b/test/configCases/hash-length/hashed-module-ids/files/file4.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file5.js b/test/configCases/hash-length/hashed-module-ids/files/file5.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file6.js b/test/configCases/hash-length/hashed-module-ids/files/file6.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file7.js b/test/configCases/hash-length/hashed-module-ids/files/file7.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file8.js b/test/configCases/hash-length/hashed-module-ids/files/file8.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/files/file9.js b/test/configCases/hash-length/hashed-module-ids/files/file9.js
@@ -0,0 +1 @@
+module.exports = module.id;
diff --git a/test/configCases/hash-length/hashed-module-ids/index.js b/test/configCases/hash-length/hashed-module-ids/index.js
@@ -0,0 +1,8 @@
+it("should have unique ids", function () {
+	var ids = [];
+	for(var i = 1; i <= 15; i++) {
+		var id = require("./files/file" + i + ".js");
+		ids.indexOf(id).should.be.eql(-1);
+		ids.push(id);
+	}
+});
diff --git a/test/configCases/hash-length/hashed-module-ids/webpack.config.js b/test/configCases/hash-length/hashed-module-ids/webpack.config.js
@@ -0,0 +1,22 @@
+var webpack = require("../../../../");
+module.exports = [{
+	plugins: [
+		new webpack.HashedModuleIdsPlugin({
+			hashDigestLength: 2
+		})
+	]
+}, {
+	plugins: [
+		new webpack.HashedModuleIdsPlugin({
+			hashDigest: "hex",
+			hashDigestLength: 2
+		})
+	]
+}, {
+	plugins: [
+		new webpack.HashedModuleIdsPlugin({
+			hashFunction: "sha1",
+			hashDigestLength: 3
+		})
+	]
+}];
