refactor of RequireIncludeDependency to es6 (webpack#3807)

Author: timse

lib/dependencies/RequireIncludeDependency.js

@@ -2,24 +2,32 @@
 	MIT License http://www.opensource.org/licenses/mit-license.php
 	Author Tobias Koppers @sokra
 */
-var ModuleDependency = require("./ModuleDependency");
+"use strict";
+const ModuleDependency = require("./ModuleDependency");
 
-function RequireIncludeDependency(request, range) {
-	ModuleDependency.call(this, request);
-	this.range = range;
+class RequireIncludeDependency extends ModuleDependency {
+	constructor(request, range) {
+		super(request);
+		this.range = range;
+	}
+
+	get type() {
+		return "require.include";
+	}
 }
-module.exports = RequireIncludeDependency;
 
-RequireIncludeDependency.prototype = Object.create(ModuleDependency.prototype);
-RequireIncludeDependency.prototype.constructor = RequireIncludeDependency;
-RequireIncludeDependency.prototype.type = "require.include";
+RequireIncludeDependency.Template = class RequireIncludeDependencyTemplate {
+	apply(dep, source, outputOptions, requestShortener) {
+		const comment = this.getOptionalComment(outputOptions.pathinfo && dep.module, requestShortener.shorten(dep.request));
+		source.replace(dep.range[0], dep.range[1] - 1, `undefined${comment}`);
+	}
 
-RequireIncludeDependency.Template = function RequireIncludeDependencyTemplate() {};
+	getOptionalComment(shouldHaveComment, shortenedRequest) {
+		if(shouldHaveComment) {
+			return "";
+		}
+		return `/*! require.include ${shortenedRequest} */`;
+	}
+}
 
-RequireIncludeDependency.Template.prototype.apply = function(dep, source, outputOptions, requestShortener) {
-	var comment = "";
-	if(outputOptions.pathinfo && dep.module)
-		comment = "/*! require.include " + requestShortener.shorten(dep.request) + " */";
-	source.replace(dep.range[0], dep.range[1] - 1,
-		"undefined" + comment);
-};
+module.exports = RequireIncludeDependency;