fix: aovid replace import.met.hot to undefined

Author: underfin

packages/vite/src/node/plugins/define.ts

@@ -12,7 +12,8 @@ const importMetaEnvMarker = '__vite_import_meta_env__'
 const importMetaEnvKeyReCache = new Map<string, RegExp>()
 
 export function definePlugin(config: ResolvedConfig): Plugin {
-  const isBuild = config.command === 'build'
+  const isBuild =
+    config.command === 'build' || !!config.experimental.fullBundleMode
   const isBuildLib = isBuild && config.build.lib
 
   // ignore replace process.env in lib build
@@ -33,8 +34,11 @@ export function definePlugin(config: ResolvedConfig): Plugin {
   const importMetaKeys: Record<string, string> = {}
   const importMetaEnvKeys: Record<string, string> = {}
   const importMetaFallbackKeys: Record<string, string> = {}
-  if (isBuild && !config.experimental.fullBundleMode) {
-    importMetaKeys['import.meta.hot'] = `undefined`
+  if (isBuild) {
+    // import.meta.hot need to avoid replace undefined at full bundle mode
+    if (!config.experimental.fullBundleMode) {
+      importMetaKeys['import.meta.hot'] = `undefined`
+    }
     for (const key in config.env) {
       const val = JSON.stringify(config.env[key])
       importMetaKeys[`import.meta.env.${key}`] = val
@@ -54,11 +58,7 @@ export function definePlugin(config: ResolvedConfig): Plugin {
       userDefine[key] = handleDefineValue(environment.config.define[key])
 
       // make sure `import.meta.env` object has user define properties
-      if (
-        isBuild &&
-        !config.experimental.fullBundleMode &&
-        key.startsWith('import.meta.env.')
-      ) {
+      if (isBuild && key.startsWith('import.meta.env.')) {
         userDefineEnv[key.slice(16)] = environment.config.define[key]
       }
     }
@@ -132,11 +132,7 @@ export function definePlugin(config: ResolvedConfig): Plugin {
 
     transform: {
       async handler(code, id) {
-        if (
-          this.environment.config.consumer === 'client' &&
-          !isBuild &&
-          !config.experimental.fullBundleMode
-        ) {
+        if (this.environment.config.consumer === 'client' && !isBuild) {
           // for dev we inject actual global defines in the vite client to
           // avoid the transform cost. see the `clientInjection` and
           // `importAnalysis` plugin.