fix ts issues 2

front/components/PartitionView.tsx

@@ -103,9 +103,11 @@ const PartitionView = (props: PartitionViewProps) => {
 			// console.log('timestamp cursor', _osmd.cursor.iterator.CurrentSourceTimestamp);
 			// console.log('timestamp cursor', _osmd.cursor.iterator.CurrentVoiceEntries);
 			// console.log('current measure index', _osmd.cursor.iterator.CurrentMeasureIndex);
-			const osmdCanvas = document.querySelector<HTMLCanvasElement>('#' + OSMD_DIV_ID + ' canvas');
+			const osmdCanvas = document.querySelector<HTMLCanvasElement>(
+				'#' + OSMD_DIV_ID + ' canvas'
+			);
+			// this should never happen this is done to silent ts linter about maybe null
 			if (!osmdCanvas) {
-				// this should never happen this is done to silent ts linter about maybe null
 				throw new Error('No canvas found');
 			}
 			// Ty https://github.com/jimutt/osmd-audio-player/blob/ec205a6e46ee50002c1fa8f5999389447bba7bbf/src/PlaybackEngine.ts#LL77C12-L77C63

front/components/PartitionVisualizer/PhaserCanvas.tsx

@@ -17,7 +17,16 @@ const isValidSoundPlayer = (soundPlayer: SplendidGrandPiano | undefined) => {
 	return soundPlayer && soundPlayer.loaded;
 };
 
-const playNotes = (notes: any[], soundPlayer: SplendidGrandPiano) => {
+const myFindLast = <T,>(a: T[], p: (_: T, _2: number) => boolean) => {
+	for (let i = a.length - 1; i >= 0; i--) {
+		if (p(a[i]!, i)) {
+			return a[i];
+		}
+	}
+	return undefined;
+}
+
+const playNotes = (notes: PianoCursorNote[], soundPlayer: SplendidGrandPiano) => {
 	notes.forEach(({ note, duration }) => {
 		const fixedKey =
 			note.ParentVoiceEntry.ParentVoice.Parent.SubInstruments.at(0)?.fixedKey ?? 0;
@@ -59,7 +68,7 @@ const getPianoScene = (
 
 			if (status === 'playing') {
 				const transitionTime = 75;
-				const cP = cursorPositions.findLast((cP: { timestamp: number; }, idx: number) => {
+				const cP = myFindLast(cursorPositions, (cP: { timestamp: number; }, idx: number) => {
 					if (
 						cP.timestamp < currentTimestamp + transitionTime &&
 						idx > this.cursorPositionsIdx
@@ -91,13 +100,18 @@ const getPianoScene = (
 	return PianoScene;
 };
 
+type PianoCursorNote = {
+	note: Note;
+	duration: number;
+};
+
 export type PianoCursorPosition = {
 	// offset in pixels
 	x: number;
 	// timestamp in ms
 	timing: number;
 	timestamp: number;
-	notes: Note[];
+	notes: PianoCursorNote[];
 };
 
 export type UpdateInfo = {

front/tsconfig.json

@@ -14,7 +14,7 @@
 		/* Language and Environment */
 		"target": "esnext" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
 		"lib": [
-			"es2023",
+			"es2022",
 			"DOM"
 		] /* Specify a set of bundled library declaration files that describe the target runtime environment. */,
 		"jsx": "react-native" /* Specify what JSX code is generated. */,