Revert "refactor: 可読性のため一部でArray.prototype.atを使うように" (#115)

* Revert "refactor: 可読性のため一部で`Array.prototype.at`を使うように (#11274)"

This reverts commit 2b6dbd4fcb.

* Apply suggestions from code review

---------

Co-authored-by: okayurisotto <okayurisotto@proton.me>

packages/frontend/src/components/MkDrive.vue

@@ -568,7 +568,7 @@ function fetchMoreFolders() {
 	os.api('drive/folders', {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
-		untilId: folders.value.at(-1)?.id,
+		untilId: folders.value[folders.value.length - 1].id,
 		limit: max + 1,
 	}).then(folders => {
 		if (folders.length === max + 1) {
@@ -591,7 +591,7 @@ function fetchMoreFiles() {
 	os.api('drive/files', {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
-		untilId: files.value.at(-1)?.id,
+		untilId: files.value[files.value.length - 1].id,
 		limit: max + 1,
 	}).then(files => {
 		if (files.length === max + 1) {

packages/frontend/src/components/MkMiniChart.vue

@@ -59,8 +59,8 @@ function draw(): void {
 
 	polygonPoints = `0,${ viewBoxY } ${ polylinePoints } ${ viewBoxX },${ viewBoxY }`;
 
-	headX = _polylinePoints.at(-1)![0];
-	headY = _polylinePoints.at(-1)![1];
+	headX = _polylinePoints[_polylinePoints.length - 1][0];
+	headY = _polylinePoints[_polylinePoints.length - 1][1];
 }
 
 watch(() => props.src, draw, { immediate: true });

packages/frontend/src/components/MkPageWindow.vue

@@ -120,7 +120,7 @@ const contextmenu = $computed(() => ([{
 
 function back() {
 	history.pop();
-	router.replace(history.at(-1)!.path, history.at(-1)!.key);
+	router.replace(history[history.length - 1].path, history[history.length - 1].key);
 }
 
 function reload() {

packages/frontend/src/components/MkPagination.vue

@@ -233,7 +233,7 @@ const fetchMore = async (): Promise<void> => {
 		...(props.pagination.offsetMode ? {
 			offset: offset.value,
 		} : {
-			untilId: Array.from(items.value.keys()).at(-1),
+			untilId: Array.from(items.value.keys())[items.value.size - 1],
 		}),
 	}).then(res => {
 		for (let i = 0; i < res.length; i++) {
@@ -297,7 +297,7 @@ const fetchMoreAhead = async (): Promise<void> => {
 		...(props.pagination.offsetMode ? {
 			offset: offset.value,
 		} : {
-			sinceId: Array.from(items.value.keys()).at(-1),
+			sinceId: Array.from(items.value.keys())[items.value.size - 1],
 		}),
 	}).then(res => {
 		if (res.length === 0) {