adapt revealjs chalkboard for next update

Upstream PR has been merged and new commit on main can be used now.

configuration

@@ -37,9 +37,10 @@ export TIPPY_JS=6.3.7
 export PDF_JS=2.8.335
 export REVEAL_JS=5.1.0
 export REVEAL_JS_MENU=2.1.0
-# unrelease version needed for a fix with Reveal.js 5
+# unrelease version needed for fixes with Reveal.js 5
 # https://github.com/rajgoel/reveal.js-plugins/pull/180
-export REVEAL_JS_CHALKBOARD=8408d5a265abf74a042122520bbb4fd0d31feaed
+# https://github.com/rajgoel/reveal.js-plugins/pull/184
+export REVEAL_JS_CHALKBOARD=217142176341e24628db2908cae38221ef13d639
 export REVEAL_JS_PDFEXPORT=2.0.1
 export LIST_JS=2.3.1
 export DAY_JS=1.11.7

package/src/common/update-html-dependencies.ts

@@ -387,11 +387,6 @@ export async function updateHtmlDependencies(config: Configuration) {
     },
     true, // true if commit, false otherwise
     false, // no v prefix,
-    // FIXME: Patch waiting for fix upstream to be merged
-    // https://github.com/rajgoel/reveal.js-plugins/pull/184
-    resolvePatches([
-      "revealjs-plugin-0001-chakboard-backdrop-filter.patch"
-    ])
   );
 
   // revealjs-menu
@@ -1128,7 +1123,7 @@ async function updateGithubSourceCodeDependency(
     await unzip(zipFile, working);
 
     await onDownload(working, version);
-    if (patches) applyGitPatches(patches);
+    if (patches) await applyGitPatches(patches);
   } else {
     throw new Error(`${versionEnvVar} is not defined`);
   }

src/resources/formats/revealjs/plugins/chalkboard/plugin.js

@@ -444,8 +444,7 @@ const initChalkboard = function ( Reveal ) {
 			container.style.visibility = 'visible';
 			container.style.pointerEvents = 'none';
 			container.style['backdrop-filter'] = 'none';
-			// for older safari
-			container.style["-webkit-backdrop-filter"] = "none";
+			container.style['-webkit-backdrop-filter'] = 'none';
 
 			var slides = document.querySelector( '.slides' );
 			var aspectRatio = Reveal.getConfig().width / Reveal.getConfig().height;