Convert module-start to async (MagicMirrorOrg#3049)

Similar to the node_helper async start PR...

---------

Co-authored-by: veeck <michael@veeck.de>

CHANGELOG.md

@@ -37,6 +37,7 @@ _This release is scheduled to be released on 2023-04-01._
 - Update dates in Calendar widgets every minute
 - Cleanup jest coverage for patches
 - Update `stylelint` dependencies, switch to `stylelint-config-standard` and handle `stylelint` issues
+- Convert module start to async/await
 - Convert translator callbacks to async/await
 - Convert app-start/-stop callbacks to async/awaits
 

js/loader.js

@@ -47,20 +47,35 @@ const Loader = (function () {
 	 * Loops thru all modules and requests start for every module.
 	 */
 	const startModules = function () {
+		const modulePromises = [];
 		for (const module of moduleObjects) {
-			module.start();
+			try {
+				modulePromises.push(module.start());
+			} catch (error) {
+				Log.error(`Error when starting node_helper for module ${module.name}:`);
+				Log.error(error);
+			}
 		}
 
-		// Notify core of loaded modules.
-		MM.modulesStarted(moduleObjects);
+		Promise.allSettled(modulePromises).then((results) => {
+			// Log errors that happened during async node_helper startup
+			results.forEach((result) => {
+				if (result.status === "rejected") {
+					Log.error(result.reason);
+				}
+			});
+
+			// Notify core of loaded modules.
+			MM.modulesStarted(moduleObjects);
 
-		// Starting modules also hides any modules that have requested to be initially hidden
-		for (const thisModule of moduleObjects) {
-			if (thisModule.data.hiddenOnStartup) {
-				Log.info("Initially hiding " + thisModule.name);
-				thisModule.hide();
+			// Starting modules also hides any modules that have requested to be initially hidden
+			for (const thisModule of moduleObjects) {
+				if (thisModule.data.hiddenOnStartup) {
+					Log.info("Initially hiding " + thisModule.name);
+					thisModule.hide();
+				}
 			}
-		}
+		});
 	};
 
 	/**

js/module.js

@@ -40,7 +40,7 @@ const Module = Class.extend({
 	/**
 	 * Called when the module is started.
 	 */
-	start: function () {
+	start: async function () {
 		Log.info("Starting module: " + this.name);
 	},
 

modules/default/alert/alert.js

@@ -44,7 +44,7 @@ Module.register("alert", {
 		return `templates/${type}.njk`;
 	},
 
-	start() {
+	async start() {
 		Log.info(`Starting module: ${this.name}`);
 
 		if (this.config.effect === "slide") {
@@ -53,7 +53,7 @@ Module.register("alert", {
 
 		if (this.config.welcome_message) {
 			const message = this.config.welcome_message === true ? this.translate("welcome") : this.config.welcome_message;
-			this.showNotification({ title: this.translate("sysTitle"), message });
+			await this.showNotification({ title: this.translate("sysTitle"), message });
 		}
 	},
 

modules/default/compliments/compliments.js

@@ -33,16 +33,15 @@ Module.register("compliments", {
 	},
 
 	// Define start sequence.
-	start: function () {
+	start: async function () {
 		Log.info("Starting module: " + this.name);
 
 		this.lastComplimentIndex = -1;
 
 		if (this.config.remoteFile !== null) {
-			this.loadComplimentFile().then((response) => {
-				this.config.compliments = JSON.parse(response);
-				this.updateDom();
-			});
+			const response = await this.loadComplimentFile();
+			this.config.compliments = JSON.parse(response);
+			this.updateDom();
 		}
 
 		// Schedule update timer.