8 files changed, 33 insertions, 17 deletions
diff --git a/packages/frontend/src/scripts/autocomplete.ts b/packages/frontend/src/scripts/autocomplete.ts
index b0c36cb927..36264fc459 100644
--- a/packages/frontend/src/scripts/autocomplete.ts
+++ b/packages/frontend/src/scripts/autocomplete.ts
@@ -19,7 +19,7 @@ export class Autocomplete {
 	} | null;
 	private textarea: HTMLInputElement | HTMLTextAreaElement;
 	private currentType: string;
-	private textRef: Ref<string>;
+	private textRef: Ref<string | number | null>;
 	private opening: boolean;
 	private onlyType: SuggestionType[];
 
@@ -38,7 +38,7 @@ export class Autocomplete {
 	/**
 	 * 対象のテキストエリアを与えてインスタンスを初期化します。
 	 */
-	constructor(textarea: HTMLInputElement | HTMLTextAreaElement, textRef: Ref<string>, onlyType?: SuggestionType[]) {
+	constructor(textarea: HTMLInputElement | HTMLTextAreaElement, textRef: Ref<string | number | null>, onlyType?: SuggestionType[]) {
 		//#region BIND
 		this.onInput = this.onInput.bind(this);
 		this.complete = this.complete.bind(this);
diff --git a/packages/frontend/src/scripts/clone.ts b/packages/frontend/src/scripts/clone.ts
index 96b53684f3..ac38faefaa 100644
--- a/packages/frontend/src/scripts/clone.ts
+++ b/packages/frontend/src/scripts/clone.ts
@@ -8,7 +8,7 @@
 // あと、Vue RefをIndexedDBに保存しようとしてstructredCloneを使ったらエラーになった
 // https://github.com/misskey-dev/misskey/pull/8098#issuecomment-1114144045
 
-type Cloneable = string | number | boolean | null | { [key: string]: Cloneable } | Cloneable[];
+type Cloneable = string | number | boolean | null | undefined | { [key: string]: Cloneable } | Cloneable[];
 
 export function deepClone<T extends Cloneable>(x: T): T {
 	if (typeof x === 'object') {
@@ -16,7 +16,7 @@ export function deepClone<T extends Cloneable>(x: T): T {
 		if (Array.isArray(x)) return x.map(deepClone) as T;
 		const obj = {} as Record<string, Cloneable>;
 		for (const [k, v] of Object.entries(x)) {
-			obj[k] = deepClone(v);
+			obj[k] = v === undefined ? undefined : deepClone(v);
 		}
 		return obj as T;
 	} else {
diff --git a/packages/frontend/src/scripts/get-note-menu.ts b/packages/frontend/src/scripts/get-note-menu.ts
index bfc3c4a8f1..a512bd8365 100644
--- a/packages/frontend/src/scripts/get-note-menu.ts
+++ b/packages/frontend/src/scripts/get-note-menu.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { defineAsyncComponent, Ref } from 'vue';
+import { defineAsyncComponent, Ref, ShallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import { claimAchievement } from './achievements.js';
 import { $i } from '@/account.js';
@@ -36,7 +36,7 @@ export async function getNoteClipMenu(props: {
 	const appearNote = isRenote ? props.note.renote as Misskey.entities.Note : props.note;
 
 	const clips = await clipsCache.fetch();
-	return [...clips.map(clip => ({
+	const menu: MenuItem[] = [...clips.map(clip => ({
 		text: clip.name,
 		action: () => {
 			claimAchievement('noteClipped1');
@@ -93,6 +93,8 @@ export async function getNoteClipMenu(props: {
 			os.apiWithDialog('clips/add-note', { clipId: clip.id, noteId: appearNote.id });
 		},
 	}];
+
+	return menu;
 }
 
 export function getAbuseNoteMenu(note: Misskey.entities.Note, text: string): MenuItem {
@@ -122,7 +124,6 @@ export function getCopyNoteLinkMenu(note: Misskey.entities.Note, text: string):
 
 export function getNoteMenu(props: {
 	note: Misskey.entities.Note;
-	menuButton: Ref<HTMLElement>;
 	translation: Ref<Misskey.entities.NotesTranslateResponse | null>;
 	translating: Ref<boolean>;
 	isDeleted: Ref<boolean>;
@@ -471,7 +472,7 @@ function smallerVisibility(a: Visibility | string, b: Visibility | string): Visi
 
 export function getRenoteMenu(props: {
 	note: Misskey.entities.Note;
-	renoteButton: Ref<HTMLElement>;
+	renoteButton: ShallowRef<HTMLElement | undefined>;
 	mock?: boolean;
 }) {
 	const isRenote = (
@@ -491,7 +492,7 @@ export function getRenoteMenu(props: {
 			text: i18n.ts.inChannelRenote,
 			icon: 'ti ti-repeat',
 			action: () => {
-				const el = props.renoteButton.value as HTMLElement | null | undefined;
+				const el = props.renoteButton.value;
 				if (el) {
 					const rect = el.getBoundingClientRect();
 					const x = rect.left + (el.offsetWidth / 2);
@@ -527,7 +528,7 @@ export function getRenoteMenu(props: {
 			text: i18n.ts.renote,
 			icon: 'ti ti-repeat',
 			action: () => {
-				const el = props.renoteButton.value as HTMLElement | null | undefined;
+				const el = props.renoteButton.value;
 				if (el) {
 					const rect = el.getBoundingClientRect();
 					const x = rect.left + (el.offsetWidth / 2);
@@ -567,7 +568,7 @@ export function getRenoteMenu(props: {
 
 	const renoteItems = [
 		...normalRenoteItems,
-		...(channelRenoteItems.length > 0 && normalRenoteItems.length > 0) ? [{ type: 'divider' }] : [],
+		...(channelRenoteItems.length > 0 && normalRenoteItems.length > 0) ? [{ type: 'divider' }] as MenuItem[] : [],
 		...channelRenoteItems,
 	];
 
diff --git a/packages/frontend/src/scripts/get-note-summary.ts b/packages/frontend/src/scripts/get-note-summary.ts
index 2007e0ea97..72153ceb75 100644
--- a/packages/frontend/src/scripts/get-note-summary.ts
+++ b/packages/frontend/src/scripts/get-note-summary.ts
@@ -10,7 +10,11 @@ import { i18n } from '@/i18n.js';
  * 投稿を表す文字列を取得します。
  * @param {*} note (packされた)投稿
  */
-export const getNoteSummary = (note: Misskey.entities.Note): string => {
+export const getNoteSummary = (note?: Misskey.entities.Note | null): string => {
+	if (note == null) {
+		return '';
+	}
+
 	if (note.deletedAt) {
 		return `(${i18n.ts.deletedNote})`;
 	}
diff --git a/packages/frontend/src/scripts/popup-position.ts b/packages/frontend/src/scripts/popup-position.ts
index 0a799c5665..f36388b8f1 100644
--- a/packages/frontend/src/scripts/popup-position.ts
+++ b/packages/frontend/src/scripts/popup-position.ts
@@ -4,7 +4,7 @@
  */
 
 export function calcPopupPosition(el: HTMLElement, props: {
-	anchorElement: HTMLElement | null;
+	anchorElement?: HTMLElement | null;
 	innerMargin: number;
 	direction: 'top' | 'bottom' | 'left' | 'right';
 	align: 'top' | 'bottom' | 'left' | 'right' | 'center';
diff --git a/packages/frontend/src/scripts/reaction-picker.ts b/packages/frontend/src/scripts/reaction-picker.ts
index 9b13e794f5..a13351b536 100644
--- a/packages/frontend/src/scripts/reaction-picker.ts
+++ b/packages/frontend/src/scripts/reaction-picker.ts
@@ -38,7 +38,7 @@ class ReactionPicker {
 		});
 	}
 
-	public show(src: HTMLElement, onChosen?: ReactionPicker['onChosen'], onClosed?: ReactionPicker['onClosed']) {
+	public show(src: HTMLElement | null, onChosen?: ReactionPicker['onChosen'], onClosed?: ReactionPicker['onClosed']) {
 		this.src.value = src;
 		this.manualShowing.value = true;
 		this.onChosen = onChosen;
diff --git a/packages/frontend/src/scripts/safe-parse.ts b/packages/frontend/src/scripts/safe-parse.ts
new file mode 100644
index 0000000000..7bce1f79ca
--- /dev/null
+++ b/packages/frontend/src/scripts/safe-parse.ts
@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export function safeParseFloat(str: unknown): number | null {
+	if (typeof str !== 'string' || str === '') return null;
+	const num = parseFloat(str);
+	if (isNaN(num)) return null;
+	return num;
+}
diff --git a/packages/frontend/src/scripts/use-note-capture.ts b/packages/frontend/src/scripts/use-note-capture.ts
index bda9c04ea4..d4e7e8104f 100644
--- a/packages/frontend/src/scripts/use-note-capture.ts
+++ b/packages/frontend/src/scripts/use-note-capture.ts
@@ -3,13 +3,13 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { onUnmounted, Ref } from 'vue';
+import { onUnmounted, Ref, ShallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import { useStream } from '@/stream.js';
 import { $i } from '@/account.js';
 
 export function useNoteCapture(props: {
-	rootEl: Ref<HTMLElement>;
+	rootEl: ShallowRef<HTMLElement | undefined>;
 	note: Ref<Misskey.entities.Note>;
 	pureNote: Ref<Misskey.entities.Note>;
 	isDeletedRef: Ref<boolean>;
@@ -83,7 +83,7 @@ export function useNoteCapture(props: {
 	function capture(withHandler = false): void {
 		if (connection) {
 			// TODO: このノートがストリーミング経由で流れてきた場合のみ sr する
-			connection.send(document.body.contains(props.rootEl.value) ? 'sr' : 's', { id: note.value.id });
+			connection.send(document.body.contains(props.rootEl.value ?? null as Node | null) ? 'sr' : 's', { id: note.value.id });
 			if (pureNote.value.id !== note.value.id) connection.send('s', { id: pureNote.value.id });
 			if (withHandler) connection.on('noteUpdated', onStreamNoteUpdated);
 		}