update packages and add valign

scripts/reveal.js/js/reveal.js

@@ -1,42 +1,41 @@
-import SlideContent from './controllers/slidecontent.js'
-import SlideNumber from './controllers/slidenumber.js'
-import JumpToSlide from './controllers/jumptoslide.js'
-import Backgrounds from './controllers/backgrounds.js'
-import AutoAnimate from './controllers/autoanimate.js'
-import ScrollView from './controllers/scrollview.js'
-import PrintView from './controllers/printview.js'
-import Fragments from './controllers/fragments.js'
-import Overview from './controllers/overview.js'
-import Keyboard from './controllers/keyboard.js'
-import Location from './controllers/location.js'
-import Controls from './controllers/controls.js'
-import Progress from './controllers/progress.js'
-import Pointer from './controllers/pointer.js'
-import Plugins from './controllers/plugins.js'
-import Overlay from './controllers/overlay.js'
-import Touch from './controllers/touch.js'
-import Focus from './controllers/focus.js'
-import Notes from './controllers/notes.js'
-import Playback from './components/playback.js'
-import defaultConfig from './config.js'
-import * as Util from './utils/util.js'
-import * as Device from './utils/device.js'
+import SlideContent from './controllers/slidecontent'
+import SlideNumber from './controllers/slidenumber'
+import JumpToSlide from './controllers/jumptoslide'
+import Backgrounds from './controllers/backgrounds'
+import AutoAnimate from './controllers/autoanimate'
+import ScrollView from './controllers/scrollview'
+import PrintView from './controllers/printview'
+import Fragments from './controllers/fragments'
+import Overview from './controllers/overview'
+import Keyboard from './controllers/keyboard'
+import Location from './controllers/location'
+import Controls from './controllers/controls'
+import Progress from './controllers/progress'
+import Pointer from './controllers/pointer'
+import Plugins from './controllers/plugins'
+import Overlay from './controllers/overlay'
+import Touch from './controllers/touch'
+import Focus from './controllers/focus'
+import Notes from './controllers/notes'
+import Playback from './components/playback'
+import { defaultConfig } from './config.ts'
+import * as Util from './utils/util'
+import * as Device from './utils/device'
 import {
 	SLIDES_SELECTOR,
 	HORIZONTAL_SLIDES_SELECTOR,
 	VERTICAL_SLIDES_SELECTOR,
 	POST_MESSAGE_METHOD_BLACKLIST
-} from './utils/constants.js'
-
-// The reveal.js version
-export const VERSION = '5.2.1';
+} from './utils/constants'
+import { version as VERSION } from '../package.json';
+export { VERSION };
 
 /**
  * reveal.js
  * https://revealjs.com
  * MIT licensed
  *
- * Copyright (C) 2011-2022 Hakim El Hattab, https://hakim.se
+ * Copyright (C) 2011-2026 Hakim El Hattab, https://hakim.se
  */
 export default function( revealElement, options ) {
 
@@ -394,7 +393,7 @@ export default function( revealElement, options ) {
 
 		// Text node
 		if( node.nodeType === 3 ) {
-			text += node.textContent;
+			text += node.textContent.trim();
 		}
 		// Element node
 		else if( node.nodeType === 1 ) {
@@ -403,10 +402,25 @@ export default function( revealElement, options ) {
 			let isDisplayHidden = window.getComputedStyle( node )['display'] === 'none';
 			if( isAriaHidden !== 'true' && !isDisplayHidden ) {
 
+				// Capture alt text from img and video elements
+				if( node.tagName === 'IMG' || node.tagName === 'VIDEO' ) {
+					let altText = node.getAttribute( 'alt' );
+					if( altText ) {
+						text += ensurePunctuation( altText );
+					}
+				}
+
 				Array.from( node.childNodes ).forEach( child => {
 					text += getStatusText( child );
 				} );
 
+				// Add period after block-level text elements to improve
+				// screen reader experience
+				const textElements = ['P', 'DIV', 'UL', 'OL', 'LI', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'BLOCKQUOTE'];
+				if( textElements.includes( node.tagName ) && text.trim() !== '' ) {
+					text = ensurePunctuation( text );
+				}
+
 			}
 
 		}
@@ -417,6 +431,22 @@ export default function( revealElement, options ) {
 
 	}
 
+	/**
+	 * Ensures text ends with proper punctuation by adding a period
+	 * if it doesn't already end with punctuation.
+	 */
+	function ensurePunctuation( text ) {
+
+		const trimmedText = text.trim();
+
+		if( trimmedText === '' ) {
+			return text;
+		}
+
+		return !/[.!?]$/.test(trimmedText) ? trimmedText + '.' : trimmedText;
+
+	}
+
 	/**
 	 * This is an unfortunate necessity. Some actions – such as
 	 * an input field being focused in an iframe or using the
@@ -1377,6 +1407,7 @@ export default function( revealElement, options ) {
 		}
 
 		if( slideChanged ) {
+			slideContent.afterSlideChanged();
 			dispatchSlideChanged( origin );
 		}
 
@@ -1470,6 +1501,8 @@ export default function( revealElement, options ) {
 
 		// Start or stop embedded content like videos and iframes
 		if( slideChanged ) {
+			slideContent.afterSlideChanged();
+
 			if( previousSlide ) {
 				slideContent.stopEmbeddedContent( previousSlide );
 				slideContent.stopEmbeddedContent( previousSlide.slideBackgroundElement );
@@ -1517,6 +1550,14 @@ export default function( revealElement, options ) {
 			fragments.sortAll();
 		}
 
+		// Re-apply slide state classes for the current indices.
+		// This ensures dynamically inserted/removed slides receive
+		// proper past/present/future classes on sync.
+		if( typeof indexh !== 'undefined' ) {
+			indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, indexh );
+			indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, indexv );
+		}
+
 		controls.update();
 		progress.update();
 
@@ -1541,6 +1582,8 @@ export default function( revealElement, options ) {
 			overview.layout();
 		}
 
+		dispatchEvent({ type: 'sync' });
+
 	}
 
 	/**
@@ -1563,6 +1606,13 @@ export default function( revealElement, options ) {
 		backgrounds.update();
 		notes.update();
 
+		dispatchEvent({
+			type: 'slidesync',
+			data: {
+				slide
+			}
+		});
+
 	}
 
 	/**
@@ -1782,14 +1832,16 @@ export default function( revealElement, options ) {
 
 		if( horizontalSlidesLength && typeof indexh !== 'undefined' ) {
 
+			const isOverview = overview.isActive();
+
 			// The number of steps away from the present slide that will
 			// be visible
-			let viewDistance = overview.isActive() ? 10 : config.viewDistance;
+			let viewDistance = isOverview ? 10 : config.viewDistance;
 
 			// Shorten the view distance on devices that typically have
 			// less resources
 			if( Device.isMobile ) {
-				viewDistance = overview.isActive() ? 6 : config.mobileViewDistance;
+				viewDistance = isOverview ? 6 : config.mobileViewDistance;
 			}
 
 			// All slides need to be visible when exporting to PDF
@@ -1822,7 +1874,7 @@ export default function( revealElement, options ) {
 
 				if( verticalSlidesLength ) {
 
-					let oy = getPreviousVerticalIndex( horizontalSlide );
+					let oy = isOverview ? 0 : getPreviousVerticalIndex( horizontalSlide );
 
 					for( let y = 0; y < verticalSlidesLength; y++ ) {
 						let verticalSlide = verticalSlides[y];
@@ -2845,6 +2897,9 @@ export default function( revealElement, options ) {
 		getComputedSlideSize,
 		setCurrentScrollPage,
 
+		// Allows for manually removing slides prior to reveal.js initialization
+		removeHiddenSlides,
+
 		// Returns the current scale of the presentation content
 		getScale: () => scale,