diff --git a/vite.config.ts b/vite.config.ts
index 4bd013bff2e..8fa7d799f27 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,27 +1,27 @@
-import { defineConfig, loadEnv } from 'vite';
+import { defineConfig, loadEnv, Rollup, UserConfig } from 'vite';
 import tsconfigPaths from 'vite-tsconfig-paths';
 import { minifyJsonPlugin } from "./src/plugins/vite/vite-minify-json-plugin";
 
-export const defaultConfig = {
+export const defaultConfig: UserConfig  = {
 	plugins: [
-		tsconfigPaths() as any, 
+		tsconfigPaths(), 
 		minifyJsonPlugin(["images", "battle-anims"], true)
 	],
 	clearScreen: false,
+	appType: "mpa",
 	build: {
-		minify: 'esbuild' as const,
+		minify: 'esbuild',
 		sourcemap: false,
-	},
-	rollupOptions: {
-		onwarn(warning, warn) {
-			// Suppress "Module level directives cause errors when bundled" warnings
-			if (warning.code === "MODULE_LEVEL_DIRECTIVE") {
-				return;
-			}
-			warn(warning);
+		rollupOptions: {
+			onwarn(warning: Rollup.RollupLog, defaultHandler: (warning: string | Rollup.RollupLog) => void) {
+				// Suppress "Module level directives cause errors when bundled" warnings
+				if (warning.code === "MODULE_LEVEL_DIRECTIVE") {
+					return;
+				}
+				defaultHandler(warning);
+			},
 		},
 	},
-	appType: "mpa",
 };