add error class for restore errors

lib/Compilation.js

@@ -33,6 +33,7 @@ const ModuleDependencyWarning = require("./ModuleDependencyWarning");
 const ModuleGraph = require("./ModuleGraph");
 const ModuleNotFoundError = require("./ModuleNotFoundError");
 const ModuleProfile = require("./ModuleProfile");
+const ModuleRestoreError = require("./ModuleRestoreError");
 const ModuleTemplate = require("./ModuleTemplate");
 const RuntimeTemplate = require("./RuntimeTemplate");
 const Stats = require("./Stats");
@@ -507,7 +508,7 @@ class Compilation {
 
 		const cacheName = `${this.compilerPath}/module/${identifier}`;
 		this.cache.get(cacheName, null, (err, cacheModule) => {
-			if (err) return callback(err);
+			if (err) return callback(new ModuleRestoreError(module, err));
 
 			if (currentProfile !== undefined) {
 				currentProfile.markRestoringEnd();

lib/ModuleRestoreError.js

@@ -0,0 +1,38 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const WebpackError = require("./WebpackError");
+
+class ModuleRestoreError extends WebpackError {
+	constructor(module, err) {
+		let message = "Module restore failed: ";
+		let details = undefined;
+		if (err !== null && typeof err === "object") {
+			if (typeof err.stack === "string" && err.stack) {
+				const stack = err.stack;
+				message += stack;
+			} else if (typeof err.message === "string" && err.message) {
+				message += err.message;
+			} else {
+				message += err;
+			}
+		} else {
+			message = err;
+		}
+
+		super(message);
+
+		this.name = "ModuleRestoreError";
+		this.details = details;
+		this.module = module;
+		this.error = err;
+
+		Error.captureStackTrace(this, this.constructor);
+	}
+}
+
+module.exports = ModuleRestoreError;