[BREAKING] Require karma >= 4.3.0

BREAKING CHANGE:
The ui5 framework is now initialized asynchronous, which is only
supported starting with karma v4.3.0.

lib/framework.js

@@ -106,7 +106,7 @@ class Framework {
 		config.files.unshift(this.createPluginFilesPattern(`${__dirname}/client/sap-ui-config.js`));
 	}
 
-	init({config, logger}) {
+	async init({config, logger}) {
 		this.config = config;
 		this.logger = logger.create("ui5.framework");
 		this.config.basePath = config.basePath || "";
@@ -268,12 +268,7 @@ class Framework {
 		}
 
 		// this.addPreprocessor();
-		this.setupMiddleware().catch((error) => {
-			this.logger.log("error", error);
-			// Can't throw an error here as it won't be caught
-			// Therefore just killing the process...
-			process.exit(1);
-		});
+		await this.setupMiddleware();
 		return this;
 	}
 

lib/index.js

@@ -1,8 +1,16 @@
+const {ErrorMessage} = require("./errors");
 const Framework = require("./framework");
 const framework = new Framework();
 
-function init(config, logger) {
-	framework.init({config, logger});
+async function init(config, logger) {
+	try {
+		await framework.init({config, logger});
+	} catch (error) {
+		const _logger = logger.create("ui5.framework");
+		_logger.log("error", error.message);
+		_logger.log("debug", error.stack);
+		throw new Error(ErrorMessage.failure());
+	}
 }
 
 init.$inject = ["config", "logger"];

package.json

@@ -42,7 +42,7 @@
     "release-note": "git-chglog -c .chglog/release-config.yml v$npm_package_version"
   },
   "peerDependencies": {
-    "karma": ">= 1.7.1"
+    "karma": ">= 4.3.0"
   },
   "dependencies": {
     "@ui5/fs": "^2.0.0",