cssとjsを1つのファイルにまとめるためのviteプラグインを追加。

plugin/kintone-addins/vite.config.js

@@ -1,16 +1,26 @@
 // vite.config.js
-import { defineConfig } from 'vite'
-const sourcemap = process.env.SOURCE_MAP==='true';
+import { defineConfig } from "vite";
+import cssInjectedByJsPlugin from "vite-plugin-css-injected-by-js";
+import checker from "vite-plugin-checker";
+
+const sourcemap = process.env.SOURCE_MAP === "true";
 
 export default defineConfig({
+  plugins: [
+    checker({
+      typescript: true,
+    }),
+    cssInjectedByJsPlugin(),
+  ],
   build: {
+    cssCodeSplit: false,
     rollupOptions: {
-      input: 'src/index.ts',  // entry file
-      output:{
-        entryFileNames:'alc_runtime.js',
+      input: "src/index.ts", // entry file
+      output: {
+        entryFileNames: "alc_runtime.js",
         // assetFileNames:'alc_kintone_style.css'
-      }
+      },
     },
-    sourcemap:sourcemap
-  }
-})
+    sourcemap: sourcemap,
+  },
+});