diff --git a/src/createConfig.ts b/src/createConfig.ts
index 63403fa..5bde0c5 100644
--- a/src/createConfig.ts
+++ b/src/createConfig.ts
@@ -13,7 +13,7 @@ import { vueTsConfigs, type ExtendableConfigName } from './configs'
 import type { ScriptLang } from './internals'
 
 type ConfigOptions = ProjectOptions & {
-  extends?: Array<ExtendableConfigName>
+  extends?: ExtendableConfigName[]
   supportedScriptLangs?: Record<ScriptLang, boolean>
 }
 
diff --git a/src/utilities.ts b/src/utilities.ts
index cdbc596..508f7dc 100644
--- a/src/utilities.ts
+++ b/src/utilities.ts
@@ -43,9 +43,8 @@ export function configureVueProject(userOptions: ProjectOptions): void {
 export function defineConfigWithVueTs(
   ...configs: InfiniteDepthConfigWithVueSupport[]
 ): ConfigArray {
-  const flattenedConfigs: Array<ConfigObjectOrPlaceholder> =
-    // @ts-ignore
-    configs.flat(Infinity)
+  // @ts-ignore
+  const flattenedConfigs: ConfigObjectOrPlaceholder[] = configs.flat(Infinity)
 
   const reorderedConfigs = insertAndReorderConfigs(flattenedConfigs)
 
@@ -84,8 +83,8 @@ type ExtractedConfig = {
 const userTypeAwareConfigs: ExtractedConfig[] = []
 
 function insertAndReorderConfigs(
-  configs: Array<ConfigObjectOrPlaceholder>,
-): Array<ConfigObjectOrPlaceholder> {
+  configs: ConfigObjectOrPlaceholder[],
+): ConfigObjectOrPlaceholder[] {
   const lastExtendedConfigIndex = configs.findLastIndex(
     config => config instanceof TsEslintConfigForVue,
   )