i.e. @HostListener('click', const [r'$event']) == @HostListener('click').

PiperOrigin-RevId: 193249064

Author: matanlurey

lib/focus/focus_item.dart

@@ -42,7 +42,7 @@ class FocusItemDirective extends RootFocusable implements FocusableItem {
   @override
   Stream<FocusMoveEvent> get focusmove => _focusMoveCtrl.stream;
 
-  @HostListener('keydown', const [r'$event'])
+  @HostListener('keydown')
   void keydown(KeyboardEvent event) {
     var focusEvent = new FocusMoveEvent.fromKeyboardEvent(this, event);
     if (focusEvent != null) {

lib/material_button/material_button_base.dart

@@ -66,27 +66,27 @@ class MaterialButtonBase extends ButtonDirective {
   void focusedStateChanged() {}
 
   /// Triggered on a mouse press.
-  @HostListener('mousedown', const [r'$event'])
+  @HostListener('mousedown')
   void onMouseDown(_) {
     _clickFocused = true;
     _isMouseDown = true;
   }
 
   /// Triggered on a mouse release.
-  @HostListener('mouseup', const [r'$event'])
+  @HostListener('mouseup')
   void onMouseUp(_) {
     _isMouseDown = false;
   }
 
   /// Triggered on focus.
-  @HostListener('focus', const [r'$event'])
+  @HostListener('focus')
   void onFocus(UIEvent event) {
     if (_clickFocused) return;
     _setFocused(true);
   }
 
   /// Triggered on blur.
-  @HostListener('blur', const [r'$event'])
+  @HostListener('blur')
   void onBlur(UIEvent event) {
     if (_clickFocused) _clickFocused = false;
     // Always ensure that focused is false.

lib/material_menu/menu_item_groups.dart

@@ -204,7 +204,7 @@ class MenuItemGroupsComponent implements Focusable, OnInit, OnDestroy {
     return _highlightCache[input] = highlighter.highlight(input, [_highlight]);
   }
 
-  @HostListener('mouseover', const [r'$event'])
+  @HostListener('mouseover')
   void onMouseOver(MouseEvent event) {
     _isMouseDriven = true;
 
@@ -218,7 +218,7 @@ class MenuItemGroupsComponent implements Focusable, OnInit, OnDestroy {
     _subMenuOpener.start();
   }
 
-  @HostListener('mouseout', const [r'$event'])
+  @HostListener('mouseout')
   void onMouseOut(MouseEvent event) {
     _isMouseDriven = false;
 

lib/scorecard/scorecard.dart

@@ -223,7 +223,7 @@ class ScorecardComponent extends KeyboardOnlyFocusIndicatorDirective {
     }
   }
 
-  @HostListener('keypress', const [r'$event'])
+  @HostListener('keypress')
   void handleKeypress(KeyboardEvent event) {
     int keyCode = event.keyCode;
     if (selectable && (keyCode == KeyCode.ENTER || isSpaceKey(event))) {