add production-expert mode

lib/NoModeWarning.js

@@ -13,7 +13,11 @@ module.exports = class NoModeWarning extends WebpackError {
 		this.name = "NoModeWarning";
 		this.message = "configuration\n" +
 			"The 'mode' option has not been set. " +
-			"Set 'mode' option to 'development' or 'production' to enable defaults for this enviroment. ";
+			"Set 'mode' option to a vakze to enable defaults for this enviroment. These are your options:\n" +
+			"* \"development\": Use this for development. It enables simple devtools and offers fast incremental compilation with support for watching.\n" +
+			"* \"production\": Use this for a simple production-ready build. It enables optimization for minimal bundle size, but keeps bundle filename constant. It's optimized for a single build without watching.\n" +
+			"* \"production-expert\": This mode enables additional optimizations, which require changing the bundle filename. This makes this mode more difficult to use.\"" +
+			"For further customization possiblilities take a look on the following options: \"devtool\", \"optimizations\", \"output.filename\"";
 
 		Error.captureStackTrace(this, this.constructor);
 	}

lib/WebpackOptionsDefaulter.js

@@ -10,7 +10,7 @@ const OptionsDefaulter = require("./OptionsDefaulter");
 const Template = require("./Template");
 
 const isProductionLikeMode = options => {
-	return options.mode === "production" || !options.mode;
+	return options.mode === "production" || options.mode === "production-expert" || !options.mode;
 };
 
 class WebpackOptionsDefaulter extends OptionsDefaulter {
@@ -71,17 +71,19 @@ class WebpackOptionsDefaulter extends OptionsDefaulter {
 			}
 		});
 
-		this.set("output.filename", "[name].js");
+		this.set("output.filename", "make", options => options.mode === "production-expert" ? "[chunkhash].js" : "[name].js");
 		this.set("output.chunkFilename", "make", options => {
 			const filename = options.output.filename;
 			const hasName = filename.indexOf("[name]") >= 0;
 			const hasChunkHash = filename.indexOf("[chunkhash]") >= 0;
 			// Anything with [chunkhash] is already fine
 			if(hasChunkHash) return filename;
+			// in production use [chunkhash]
+			if(isProductionLikeMode(options)) return filename.replace(/(^|\/)([^/]*)(\?|$)/, "$1[chunkhash].js");
 			// Replace [name] with [id] because it doesn't require a name map
 			if(hasName) return filename.replace("[name]", "[id]");
 			// Prefix "[id]." in front of the basename
-			return filename.replace(/(^|\/)([^/]*(?:\?|$))/, "$1[id].$2");
+			return filename.replace(/(^|\/)([^/]*)(\?|$)/, "$1[id].$2$3");
 		});
 		this.set("output.webassemblyModuleFilename", "[modulehash].module.wasm");
 		this.set("output.library", "");

schemas/WebpackOptions.json

@@ -1121,6 +1121,7 @@
       "enum": [
         "development",
         "production",
+        "production-expert",
         "none"
       ]
     },

test/Errors.test.js

@@ -106,8 +106,9 @@ describe("Errors", () => {
 			let lines = warnings[0].split("\n");
 			lines[0].should.match(/configuration/);
 			lines[1].should.match(/mode/);
-			lines[1].should.match(/development/);
-			lines[1].should.match(/production/);
+			lines[2].should.match(/development/);
+			lines[3].should.match(/production/);
+			lines[4].should.match(/production-expert/);
 			done();
 		});
 	});