diff --git a/.gitignore b/.gitignore
index ca7cbb0..b3e145a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,18 @@
-/.settings
-/target
-/.classpath
-/.project
-/node_modules
-/frontend
-/webpack.generated.js
-/node
-/drivers
-/package-lock.json
-/webpack.config.js
-/package.json
+node_modules
+target
+.vscode
+.settings
+.project
+.classpath
+webpack.generated.js
+package-lock.json
+package.json
+webpack.config.js
 /error-screenshots
-/tsconfig.json
-/.npmrc
-/pnpm-lock.yaml
-/pnpmfile.js
-/types.d.ts
+drivers
+tsconfig.json
 .idea
+types.d.ts
+/frontend/generated
+/frontend/index.html
+vite.generated.ts
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 9f71a45..fdac0db 100644
--- a/pom.xml
+++ b/pom.xml
@@ -111,7 +111,7 @@
 		<dependency>
 			<groupId>com.flowingcode.vaadin.addons.demo</groupId>
 			<artifactId>commons-demo</artifactId>
-			<version>3.5.0</version>
+			<version>3.5.1</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -455,7 +455,28 @@
 				</plugins>
 			</build>
 		</profile>
-        
+
+		<profile>
+			<id>v24</id>
+			<properties>
+				<maven.compiler.source>17</maven.compiler.source>
+				<maven.compiler.target>17</maven.compiler.target>
+				<vaadin.version>24.0.0.alpha5</vaadin.version>
+				<jetty.version>11.0.12</jetty.version>
+			</properties>
+			<repositories>
+				<repository>
+					<id>vaadin-prerelease</id>
+					<url>https://maven.vaadin.com/vaadin-prereleases</url>
+				</repository>
+			</repositories>
+			<pluginRepositories>
+				<pluginRepository>
+					<id>vaadin-prerelease</id>
+					<url>https://maven.vaadin.com/vaadin-prereleases</url>
+				</pluginRepository>
+			</pluginRepositories>
+		</profile>
     </profiles>
     
 </project>
diff --git a/src/main/resources/META-INF/frontend/fc-xterm/xterm-clipboard-mixin.ts b/src/main/resources/META-INF/frontend/fc-xterm/xterm-clipboard-mixin.ts
index b53874a..a1f028b 100644
--- a/src/main/resources/META-INF/frontend/fc-xterm/xterm-clipboard-mixin.ts
+++ b/src/main/resources/META-INF/frontend/fc-xterm/xterm-clipboard-mixin.ts
@@ -57,8 +57,8 @@ class ClipboardAddon extends TerminalAddon<IClipboardMixin> {
 		}
 		
 		let onEvent = (event, listener) => {
-			terminal.element.addEventListener(event, listener);
-			return {dispose : () => terminal.element.removeEventListener(event, listener)};
+			terminal.element!.addEventListener(event, listener);
+			return {dispose : () => terminal.element!.removeEventListener(event, listener)};
 		};
 		
 		
diff --git a/src/main/resources/META-INF/frontend/fc-xterm/xterm-console-mixin.ts b/src/main/resources/META-INF/frontend/fc-xterm/xterm-console-mixin.ts
index db009b3..e312b4d 100644
--- a/src/main/resources/META-INF/frontend/fc-xterm/xterm-console-mixin.ts
+++ b/src/main/resources/META-INF/frontend/fc-xterm/xterm-console-mixin.ts
@@ -56,11 +56,11 @@ class ConsoleAddon extends TerminalAddon<IConsoleMixin> {
 			this._activeBuffer.x = Math.min(col, terminal.cols);
 		}).bind(inputHandler);
 		
-		let cursorForwardWrapped = (function(params: any) {
+		let cursorForwardWrapped = (function(params: any = [0]) {
 			let buffer = this._bufferService.buffer;
 			let x = buffer.x;
 			let y = buffer.y;
-			for (let i=(params && params[0] || 1); i>0; --i) {
+			for (let i=(params[0] || 1); i>0; --i) {
 				let apply=false;
 				if (buffer.x>=this._bufferService.cols-1) {
 					let next = buffer.lines.get(buffer.y+buffer.ybase+1);
@@ -85,13 +85,13 @@ class ConsoleAddon extends TerminalAddon<IConsoleMixin> {
 			return true;
 		}).bind(inputHandler);
 			
-		let cursorBackwardWrapped = (function(params : any) {
+		let cursorBackwardWrapped = (function(params : any = [0]) {
 			let buffer = this._bufferService.buffer;
 			let x = buffer.x;
 			let y = buffer.y;
 			let apply=false;
 			
-			for (let i=0; i< (params && params[0] || 1); i++) {
+			for (let i=0; i< (params[0] || 1); i++) {
 				let line = buffer.lines.get(buffer.y+buffer.ybase);
 				if (!line.isWrapped && buffer.x< 1+promptLength()) {
 					break;
@@ -115,11 +115,11 @@ class ConsoleAddon extends TerminalAddon<IConsoleMixin> {
 			return apply;
 		}).bind(inputHandler);
 		
-		let deleteChar = (function(params: any) {
+		let deleteChar = (function(params: any = [0]) {
 			let buffer = this._bufferService.buffer;
 			let x = buffer.x;
 			let y = buffer.y;
-			for (let j=0; j< (params && params[0] || 1); j++) {
+			for (let j=0; j< (params[0] || 1); j++) {
 				this.deleteChars({params:[1]});
 				let line = buffer.lines.get(buffer.ybase+buffer.y);
 				let range = buffer.getWrappedRangeForLine(buffer.y + buffer.ybase)
@@ -204,27 +204,32 @@ class ConsoleAddon extends TerminalAddon<IConsoleMixin> {
 		}).bind(inputHandler);
 		
 		let hasModifiers = (ev:KeyboardEvent) => ev.shiftKey || ev.altKey || ev.metaKey || ev.ctrlKey;
+
+		function probe_others<T>(callback: ((params: T[]) => void)): ((params: T[]) => boolean) {
+			// execute callback and also probe for other handlers
+			return params => {callback(params); return false;}
+		};
 		
 		this._disposables = [
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'H'}, cursorHome),	
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'H'}, probe_others(cursorHome)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='Home' && !hasModifiers(ev), ()=> terminal.write('\x1b[<H')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'E'}, cursorEnd),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'E'}, probe_others(cursorEnd)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='End' && !hasModifiers(ev), ()=> terminal.write('\x1b[<E')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'L'}, cursorBackwardWrapped),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'L'}, probe_others(cursorBackwardWrapped)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='ArrowLeft' && !hasModifiers(ev), ()=> terminal.write('\x1b[<L')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'R'}, cursorForwardWrapped),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'R'}, probe_others(cursorForwardWrapped)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='ArrowRight' && !hasModifiers(ev), ()=> terminal.write('\x1b[<R')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'B'}, backspace),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'B'}, probe_others(backspace)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='Backspace' && !hasModifiers(ev), ()=> terminal.write('\x1b[<B')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'D'}, deleteChar),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'D'}, probe_others(deleteChar)),
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='Delete' && !hasModifiers(ev), ()=> terminal.write('\x1b[<D')),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'K'}, eraseInLine),
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'K'}, probe_others(eraseInLine)),
 		
 		this.$node.customKeyEventHandlers.register(ev=> ev.key=='Insert' && !hasModifiers(ev), ev=>{
 			this.$.insertMode = !this.$.insertMode;
@@ -248,9 +253,9 @@ class ConsoleAddon extends TerminalAddon<IConsoleMixin> {
 			'F5',
 			'F6',
 			'F12'
-		].includes(ev.key), null),
+		].includes(ev.key), undefined),
 		
-		terminal.parser.registerCsiHandler({prefix: '<', final: 'N'}, linefeed)
+		terminal.parser.registerCsiHandler({prefix: '<', final: 'N'}, probe_others(linefeed))
 
 		];
 		
@@ -312,12 +317,12 @@ export function XTermConsoleMixin<TBase extends Constructor<TerminalMixin>>(Base
 	}
 
 	get currentLine() : string {
-		return this._consoleAddon.currentLine;
+		return this._consoleAddon!.currentLine;
 	}
 
 	writePrompt() {
 		//execute writePrompt with blocking semantics 
-		this.node.terminal.write('', ()=>this._consoleAddon.writePrompt());
+		this.node.terminal.write('', ()=>this._consoleAddon!.writePrompt());
 	}
 	
  }
diff --git a/src/main/resources/META-INF/frontend/fc-xterm/xterm-element.ts b/src/main/resources/META-INF/frontend/fc-xterm/xterm-element.ts
index d3421fa..42db279 100644
--- a/src/main/resources/META-INF/frontend/fc-xterm/xterm-element.ts
+++ b/src/main/resources/META-INF/frontend/fc-xterm/xterm-element.ts
@@ -50,9 +50,9 @@ class CustomKeyEventHandlerRegistry {
   private handlers: CustomKeyEventHandler[] = [];
   private next:integer=0;
 
-  register(customKey: CustomKey, handle: (event: KeyboardEvent) => void): CustomKeyEventHandlerRegistryDisposable;
-  register(predicate: KeyboardEventPredicate, handle: KeyboardEventHandler) : CustomKeyEventHandlerRegistryDisposable;
-  register(arg: CustomKey | KeyboardEventPredicate, handle: KeyboardEventHandler) : CustomKeyEventHandlerRegistryDisposable {    
+  register(customKey: CustomKey, handle?: (event: KeyboardEvent) => void): CustomKeyEventHandlerRegistryDisposable;
+  register(predicate: KeyboardEventPredicate, handle?: KeyboardEventHandler) : CustomKeyEventHandlerRegistryDisposable;
+  register(arg: CustomKey | KeyboardEventPredicate, handle?: KeyboardEventHandler) : CustomKeyEventHandlerRegistryDisposable {    
     let predicate : KeyboardEventPredicate;
     if ((typeof arg) === 'object') {
         let customKey = arg as any;
diff --git a/src/main/resources/META-INF/frontend/fc-xterm/xterm-fit-mixin.ts b/src/main/resources/META-INF/frontend/fc-xterm/xterm-fit-mixin.ts
index 2aa0332..18025c5 100644
--- a/src/main/resources/META-INF/frontend/fc-xterm/xterm-fit-mixin.ts
+++ b/src/main/resources/META-INF/frontend/fc-xterm/xterm-fit-mixin.ts
@@ -86,10 +86,10 @@ export function XTermFitMixin<TBase extends Constructor<TerminalMixin>>(Base: TB
     }
 
     fit() {
-      this._fitAddon.proposeDimensions();
+      this._fitAddon!.proposeDimensions();
 	  window.setTimeout(()=>{ 
 	      try {
-	        this._fitAddon?.fit();
+	        this._fitAddon!.fit();
 	      } catch (e) {
 	        console.warn(e);
 	      }
diff --git a/src/main/resources/META-INF/frontend/fc-xterm/xterm-selection-mixin.ts b/src/main/resources/META-INF/frontend/fc-xterm/xterm-selection-mixin.ts
index 30d4020..e7faabe 100644
--- a/src/main/resources/META-INF/frontend/fc-xterm/xterm-selection-mixin.ts
+++ b/src/main/resources/META-INF/frontend/fc-xterm/xterm-selection-mixin.ts
@@ -28,7 +28,7 @@ interface ISelectionMixin extends TerminalMixin {
 class SelectionAddon extends TerminalAddon<ISelectionMixin> {
 
 	__selectionLength: number;
-	__selectionAnchor: number;
+	__selectionAnchor?: number;
 	__selectionRight:  boolean = true;
 	
 	activateCallback(terminal: Terminal): void {
@@ -69,7 +69,7 @@ class SelectionAddon extends TerminalAddon<ISelectionMixin> {
 				this.__selectionRight = !this.__selectionRight;
 			}
 
-			let newSelectionStart = this.__selectionAnchor;
+			let newSelectionStart = this.__selectionAnchor!;
 			if (!this.__selectionRight) {
 				newSelectionStart -= newSelectionLength;
 			}
@@ -101,7 +101,7 @@ class SelectionAddon extends TerminalAddon<ISelectionMixin> {
 			
 			resetSelection();
 			ensureSelection();
-			let dx = range.first * terminal.cols - this.__selectionAnchor;
+			let dx = range.first * terminal.cols - this.__selectionAnchor!;
 			if (pos.startRow != range.first || pos.startColumn != promptLength()) {
 				dx+= promptLength();
 			}
@@ -117,7 +117,7 @@ class SelectionAddon extends TerminalAddon<ISelectionMixin> {
 			
 			resetSelection();
 			ensureSelection();
-			moveSelection(range.last * terminal.cols + buffer.lines.get(range.last).getTrimmedLength() - this.__selectionAnchor);
+			moveSelection(range.last * terminal.cols + buffer.lines.get(range.last).getTrimmedLength() - this.__selectionAnchor!);
 		};
 		
 		let deleteSelection = (ev: KeyboardEvent) => {