diff --git a/src/data/honkai3rd/battlesuits.ts b/src/data/honkai3rd/battlesuits.ts
index 4ea155b8..c82f1cd6 100644
--- a/src/data/honkai3rd/battlesuits.ts
+++ b/src/data/honkai3rd/battlesuits.ts
@@ -1,5 +1,4 @@
-import fs from 'fs'
-import { readdirSync, readJsonFileSync, resolvePathname } from '../../lib/data'
+import { readdirSync, readJsonFileSync } from '../../lib/data'
 
 export interface BattlesuitSkill {
   name: string
diff --git a/src/pages/honkai3rd/stigmata/[stigmataId].tsx b/src/pages/honkai3rd/stigmata/[stigmataId].tsx
index 3cac6b9d..6b1a7ff4 100644
--- a/src/pages/honkai3rd/stigmata/[stigmataId].tsx
+++ b/src/pages/honkai3rd/stigmata/[stigmataId].tsx
@@ -1,11 +1,5 @@
-import {
-  NavLink,
-  Box,
-  Card,
-  Heading,
-  Text,
-  Paragraph,
-} from '@theme-ui/components'
+import { NavLink, Box, Heading, Text, Paragraph } from '@theme-ui/components'
+import { NextPageContext } from 'next'
 import Link from 'next/link'
 import React from 'react'
 import {
@@ -101,16 +95,18 @@ const StigmataListPage = ({
 
 export default StigmataListPage
 
-export async function getStaticProps(ctx) {
-  const stigmataData = getStigmataById(ctx.params.stigmataId)
+export async function getStaticProps(
+  ctx: NextPageContext & { params: { stigmataId: string } }
+) {
+  const stigmataData = getStigmataById(ctx.params.stigmataId)!
 
   return {
     props: {
       stigmataData: stigmataData,
-      stigmataSetList: getStigmataListBySetId(stigmataData.set).sort(
+      stigmataSetList: (getStigmataListBySetId(stigmataData.set!) || []).sort(
         (a, b) => -a.type.localeCompare(b.type)
       ),
-      stigmataSet: getStigmataSetBySetId(stigmataData.set) || null,
+      stigmataSet: getStigmataSetBySetId(stigmataData.set!) || null,
     },
   }
 }
diff --git a/src/pages/honkai3rd/stigmata/index.tsx b/src/pages/honkai3rd/stigmata/index.tsx
index 8ea6596c..ecfbc3c7 100644
--- a/src/pages/honkai3rd/stigmata/index.tsx
+++ b/src/pages/honkai3rd/stigmata/index.tsx
@@ -1,5 +1,5 @@
 /** @jsxImportSource theme-ui */
-import { Text, NavLink, Box, Heading, Flex, Link } from '@theme-ui/components'
+import { Text, Box, Heading, Flex, Link } from '@theme-ui/components'
 import NextLink from 'next/link'
 import Breadcrumb from '../../../components/organisms/Breadcrumb'
 import Honkai3rdNavigator from '../../../components/organisms/Honkai3rdNavigator'
diff --git a/tsconfig.json b/tsconfig.json
index 6db37c02..e4d1b438 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,14 +1,11 @@
 {
   "compilerOptions": {
     "target": "es5",
-    "lib": [
-      "dom",
-      "dom.iterable",
-      "esnext"
-    ],
+    "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
     "skipLibCheck": true,
-    "strict": false,
+    "strict": true,
+    "noUnusedLocals": true,
     "forceConsistentCasingInFileNames": true,
     "noEmit": true,
     "incremental": true,
@@ -19,12 +16,6 @@
     "isolatedModules": true,
     "jsx": "preserve"
   },
-  "include": [
-    "next-env.d.ts",
-    "**/*.ts",
-    "**/*.tsx"
-  ],
-  "exclude": [
-    "node_modules"
-  ]
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
+  "exclude": ["node_modules"]
 }