feat: setup vite config

package.json

@@ -100,6 +100,7 @@
     "@iconify-json/logos": "^1.2.0",
     "@iconify-json/lucide": "^1.2.5",
     "@size-limit/file": "^8.2.4",
+    "@vitejs/plugin-legacy": "^5.4.2",
     "@vitest/coverage-v8": "^2.1.1",
     "@vue/test-utils": "^2.4.6",
     "autoprefixer": "^10.4.20",
@@ -120,6 +121,7 @@
     "prettier": "^3.3.3",
     "size-limit": "^8.2.4",
     "tailwindcss": "^3.4.13",
+    "terser": "^5.34.1",
     "vite": "^5.4.8",
     "vite-plugin-ruby": "^5.0.0",
     "vitest": "^2.1.1"

vite.config.ts

@@ -18,6 +18,7 @@ and build it separately using Vite itself, toggled by an ENV variable.
 
 We need to edit the `asset:precompile` rake task to include the SDK in the precompile list.
 */
+import legacy from '@vitejs/plugin-legacy';
 import { defineConfig } from 'vite';
 import ruby from 'vite-plugin-ruby';
 import path from 'path';
@@ -34,7 +35,13 @@ const vueOptions = {
   },
 };
 
-let plugins = [ruby(), vue(vueOptions)];
+let plugins = [
+  legacy({
+    targets: ['defaults', 'not IE 11'],
+  }),
+  ruby(),
+  vue(vueOptions),
+];
 
 if (isLibraryMode) {
   plugins = [];