fix(legacy): import @babel/preset-env (#12961)

Author: merceyz

package.json

@@ -41,6 +41,7 @@
     "@microsoft/api-extractor": "^7.34.4",
     "@rollup/plugin-typescript": "^11.1.0",
     "@types/babel__core": "^7.20.0",
+    "@types/babel__preset-env": "^7.9.2",
     "@types/babel__standalone": "^7.1.4",
     "@types/convert-source-map": "^2.0.0",
     "@types/cross-spawn": "^6.0.2",

packages/plugin-legacy/src/index.ts

@@ -438,7 +438,7 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
             }),
           ],
           [
-            '@babel/preset-env',
+            (await import('@babel/preset-env')).default,
             createBabelPresetEnvOptions(targets, {
               needPolyfills,
               ignoreBrowserslistConfig: options.ignoreBrowserslistConfig,
@@ -608,7 +608,7 @@ export async function detectPolyfills(
     configFile: false,
     presets: [
       [
-        '@babel/preset-env',
+        (await import('@babel/preset-env')).default,
         createBabelPresetEnvOptions(targets, {
           ignoreBrowserslistConfig: true,
         }),