diff --git a/packages/frontend/src/pages/settings/notifications.notification-config.vue b/packages/frontend/src/pages/settings/notifications.notification-config.vue
index 6dde00610..8d78ce703 100644
--- a/packages/frontend/src/pages/settings/notifications.notification-config.vue
+++ b/packages/frontend/src/pages/settings/notifications.notification-config.vue
@@ -7,11 +7,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 <div class="_gaps_m">
 	<MkSelect v-model="type">
 		<option value="all">{{ i18n.ts.all }}</option>
-		<option value="following" v-if="hasSender">{{ i18n.ts.following }}</option>
-		<option value="follower" v-if="hasSender">{{ i18n.ts.followers }}</option>
-		<option value="mutualFollow" v-if="hasSender">{{ i18n.ts.mutualFollow }}</option>
-		<option value="followingOrFollower" v-if="hasSender">{{ i18n.ts.followingOrFollower }}</option>
-		<option value="list" v-if="hasSender">{{ i18n.ts.userList }}</option>
+		<option v-if="hasSender" value="following">{{ i18n.ts.following }}</option>
+		<option v-if="hasSender" value="follower">{{ i18n.ts.followers }}</option>
+		<option v-if="hasSender" value="mutualFollow">{{ i18n.ts.mutualFollow }}</option>
+		<option v-if="hasSender" value="followingOrFollower">{{ i18n.ts.followingOrFollower }}</option>
+		<option v-if="hasSender" value="list">{{ i18n.ts.userList }}</option>
 		<option value="never">{{ i18n.ts.none }}</option>
 	</MkSelect>
 
diff --git a/packages/frontend/src/scripts/chiptune2.ts b/packages/frontend/src/scripts/chiptune2.ts
index 3cc34c004..56afb9b70 100644
--- a/packages/frontend/src/scripts/chiptune2.ts
+++ b/packages/frontend/src/scripts/chiptune2.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /* eslint-disable */
 
 const ChiptuneAudioContext = window.AudioContext || window.webkitAudioContext;
@@ -6,6 +5,11 @@ const ChiptuneAudioContext = window.AudioContext || window.webkitAudioContext;
 let libopenmpt
 let libopenmptLoadPromise
 
+type ChiptuneJsConfig = {
+	repeatCount: number | null;
+	context: AudioContext | null;
+};
+
 export function ChiptuneJsConfig (repeatCount?: number, context?: AudioContext) {
 	this.repeatCount = repeatCount;
 	this.context = context;
@@ -13,7 +17,7 @@ export function ChiptuneJsConfig (repeatCount?: number, context?: AudioContext)
 
 ChiptuneJsConfig.prototype.constructor = ChiptuneJsConfig;
 
-export function ChiptuneJsPlayer (config: object) {
+export function ChiptuneJsPlayer (config: ChiptuneJsConfig) {
 	this.config = config;
 	this.audioContext = config.context || new ChiptuneAudioContext();
 	this.context = this.audioContext.createGain();
@@ -27,7 +31,7 @@ ChiptuneJsPlayer.prototype.initialize = function() {
 	if (libopenmptLoadPromise) return libopenmptLoadPromise;
 	if (libopenmpt) return Promise.resolve();
 
-	libopenmptLoadPromise = new Promise(async (resolve, reject) => {
+	libopenmptLoadPromise = new Promise<void>(async (resolve, reject) => {
 		try {
 			const { Module } = await import('./libopenmpt/libopenmpt.js');
 			await new Promise((resolve) => {
diff --git a/packages/frontend/src/scripts/nyaize.ts b/packages/frontend/src/scripts/nyaize.ts
index 58ed88fed..5e6fa298d 100644
--- a/packages/frontend/src/scripts/nyaize.ts
+++ b/packages/frontend/src/scripts/nyaize.ts
@@ -9,9 +9,9 @@ const koRegex3 = /(야(?=\?))|(야$)|(야(?= ))/gm;
 
 function ifAfter(prefix, fn) {
 	const preLen = prefix.length;
-	const regex = new RegExp(prefix,'i');
-	return (x,pos,string) => {
-		return pos > 0 && string.substring(pos-preLen,pos).match(regex) ? fn(x) : x;
+	const regex = new RegExp(prefix, 'i');
+	return (x, pos, string) => {
+		return pos > 0 && string.substring(pos - preLen, pos).match(regex) ? fn(x) : x;
 	};
 }
 
@@ -25,7 +25,7 @@ export function nyaize(text: string): string {
 		.replace(/one/gi, ifAfter('every', x => x === 'ONE' ? 'NYAN' : 'nyan'))
 		// ko-KR
 		.replace(koRegex1, match => String.fromCharCode(
-			match.charCodeAt(0)! + '냐'.charCodeAt(0) - '나'.charCodeAt(0),
+			match.charCodeAt(0) + '냐'.charCodeAt(0) - '나'.charCodeAt(0),
 		))
 		.replace(koRegex2, '다냥')
 		.replace(koRegex3, '냥');