feat: auto restart dev container when hmr fails

hot/poll.js

@@ -0,0 +1,47 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+	Version 3e03edc on Jul 9, 2018
+*/
+/*globals __resourceQuery */
+if (module.hot) {
+	var hotPollInterval = +__resourceQuery.substr(1) || 10 * 60 * 1000;
+	var log = require("webpack/hot/log");
+
+	var checkForUpdate = function checkForUpdate(fromUpdate) {
+		if (module.hot.status() === "idle") {
+			module.hot
+				.check(true)
+				.then(function(updatedModules) {
+					if (!updatedModules) {
+						if (fromUpdate) log("info", "[HMR] Update applied.");
+						return;
+					}
+					require("webpack/hot/log-apply-result")(updatedModules, updatedModules);
+					checkForUpdate(true);
+				})
+				.catch(function(err) {
+					var status = module.hot.status();
+					if (["abort", "fail"].indexOf(status) >= 0) {
+						log("warning", "[HMR] Cannot apply update.");
+						log("warning", "[HMR] " + (err.stack || err.message));
+						log("warning", "[HMR] You need to restart the application!");
+					} else {
+						log(
+							"warning",
+							"[HMR] Update failed: " + (err.stack || err.message)
+						);
+					}
+					// <udk patch>
+					if (process.send) {
+						log("warning", "[HMR] udk auto restart the application...");
+						process.send({ action: 'run' });
+					}
+					// </udk patch>
+				});
+		}
+	};
+	setInterval(checkForUpdate, hotPollInterval);
+} else {
+	throw new Error("[HMR] Hot Module Replacement is disabled.");
+}

lib/devContainer.ts

@@ -651,7 +651,7 @@ export class DevContainerRuntime extends ContainerRuntime {
     if (!config.autoRestart) {
       ensureConfigHasPlugin(nodeConfigs, HMRPlugin, [ hmr.pluginNode ]);
 
-      ensureConfigHasEntry(nodeConfigs, 'webpack/hot/poll', hmr.hotPollInterval, {
+      ensureConfigHasEntry(nodeConfigs, 'udk/hot/poll', hmr.hotPollInterval, {
         entriesFilter: hmr.entriesNode,
         topModuleEntries: config.topModuleEntries,
       });