diff --git a/packages/nuxt3/src/config/config/build.ts b/packages/nuxt3/src/config/config/build.ts
index c04bbb3f2a..6a44cf0cbc 100644
--- a/packages/nuxt3/src/config/config/build.ts
+++ b/packages/nuxt3/src/config/config/build.ts
@@ -72,14 +72,6 @@ interface UrlLoaderOptions {
   mimetype?: string
 }
 
-interface WebpackEnv {
-  isClient: boolean
-  isDev: boolean
-  isLegacy: boolean
-  isModern: boolean
-  isServer: boolean
-}
-
 interface PostcssOrderPresetFunctions {
   cssnanoLast: (names: string[]) => string[]
   presetEnvAndCssnanoLast: (names: string[]) => string[]
@@ -97,7 +89,7 @@ interface PostcssConfiguration {
   order?: PostcssOrderPreset | string[] | ((names: string[], presets: PostcssOrderPresetFunctions) => string[])
   plugins?: {
     [key: string]: false | { [key: string]: any }
-  } | ((loader: any) => PostcssPlugin<any>[]) | Array<[string | PostcssPlugin<any>, any] | string | PostcssPlugin<any>>
+  } | ((loader: any) => PostcssPlugin[]) | Array<[string | PostcssPlugin, any] | string | PostcssPlugin>
   preset?: {
     autoprefixer?: false | AutoprefixerOptions
     browsers?: string
@@ -106,19 +98,13 @@ interface PostcssConfiguration {
       [key: string]: boolean | { [key: string]: any }
     }
     importFrom?: string | string[] | Partial<PostcssVariableMap> | (() => Partial<PostcssVariableMap>)
-    insertAfter?: { [key: string]: PostcssPlugin<any> }
-    insertBefore?: { [key: string]: PostcssPlugin<any> }
+    insertAfter?: { [key: string]: PostcssPlugin }
+    insertBefore?: { [key: string]: PostcssPlugin }
     preserve?: boolean
     stage?: 0 | 1 | 2 | 3 | 4 | false
   }
 }
 
-interface VueStyleOptions {
-  manualInject?: boolean
-  ssrId?: boolean
-  shadowMode?: boolean
-}
-
 interface Loaders {
   css?: CssLoaderOptions
   cssModules?: CssLoaderOptions
diff --git a/packages/nuxt3/src/core/resolver.ts b/packages/nuxt3/src/core/resolver.ts
index 8e75759cdd..afede72207 100644
--- a/packages/nuxt3/src/core/resolver.ts
+++ b/packages/nuxt3/src/core/resolver.ts
@@ -23,7 +23,7 @@ interface RequireModuleOptions {
 
 export default class Resolver {
   _require: NodeJS.Require
-  _resolve: RequireResolve
+  _resolve: NodeJS.RequireResolve
   nuxt: Nuxt
   options: Nuxt['options']
 
diff --git a/packages/nuxt3/src/server/jsdom.ts b/packages/nuxt3/src/server/jsdom.ts
index ecec7f6436..23c4934a82 100644
--- a/packages/nuxt3/src/server/jsdom.ts
+++ b/packages/nuxt3/src/server/jsdom.ts
@@ -46,7 +46,7 @@ export default async function renderAndGetWindow (
 
   if (options.virtualConsole) {
     if (options.virtualConsole === undefined) {
-      options.virtualConsole = new jsdom.VirtualConsole().sendTo(consola as unknown as Console)
+      options.virtualConsole = new jsdom.VirtualConsole().sendTo(consola as unknown as typeof console)
     }
     // Throw error when window creation failed
     options.virtualConsole.on('jsdomError', jsdomErrHandler)
diff --git a/packages/nuxt3/src/utils/modern.ts b/packages/nuxt3/src/utils/modern.ts
index 86eb05f518..96d7653aa0 100644
--- a/packages/nuxt3/src/utils/modern.ts
+++ b/packages/nuxt3/src/utils/modern.ts
@@ -17,10 +17,10 @@ export const ModernBrowsers = {
   'Mobile Safari': '10.3'
 } as const
 
-type ModernBrowsers = { -readonly [key in keyof typeof ModernBrowsers]: SemVer }
+type ModernBrowsersT = { -readonly [key in keyof typeof ModernBrowsers]: SemVer }
 
 let semver: typeof import('semver')
-let __modernBrowsers: ModernBrowsers
+let __modernBrowsers: ModernBrowsersT
 
 const getModernBrowsers = () => {
   if (__modernBrowsers) {
@@ -35,7 +35,7 @@ const getModernBrowsers = () => {
       if (version) { allBrowsers[browser] = version }
       return allBrowsers
     },
-    {} as ModernBrowsers
+    {} as ModernBrowsersT
   )
   return __modernBrowsers
 }
diff --git a/packages/nuxt3/src/utils/serialize.ts b/packages/nuxt3/src/utils/serialize.ts
index d2ea21ebca..343b666518 100644
--- a/packages/nuxt3/src/utils/serialize.ts
+++ b/packages/nuxt3/src/utils/serialize.ts
@@ -1,9 +1,14 @@
 import serialize from 'serialize-javascript'
 
-export function normalizeFunctions (obj: Array<any>): Array<any>
-export function normalizeFunctions (obj: null): null
-export function normalizeFunctions (obj: Function): Function
-export function normalizeFunctions (obj: Record<string, any>): Record<string, any>
+// eslint-disable-next-line no-redeclare
+export function normalizeFunctions(obj: Array<any>): Array<any>
+// eslint-disable-next-line no-redeclare
+export function normalizeFunctions(obj: null): null
+// eslint-disable-next-line no-redeclare
+export function normalizeFunctions(obj: Function): Function
+// eslint-disable-next-line no-redeclare
+export function normalizeFunctions(obj: Record<string, any>): Record<string, any>
+// eslint-disable-next-line no-redeclare
 export function normalizeFunctions (obj: Array<unknown> | null | Function | Record<string, any>) {
   if (typeof obj !== 'object' || Array.isArray(obj) || obj === null) {
     return obj