fix: if host is specified check whether it is valid (#14013)

packages/vite/src/node/cli.ts

@@ -102,6 +102,16 @@ function cleanOptions<Options extends GlobalCLIOptions>(
   return ret
 }
 
+/**
+ * host may be a number (like 0), should convert to string
+ */
+const convertHost = (v: any) => {
+  if (typeof v === 'number') {
+    return String(v)
+  }
+  return v
+}
+
 cli
   .option('-c, --config <file>', `[string] use specified config file`)
   .option('--base <path>', `[string] public base path (default: /)`)
@@ -116,7 +126,7 @@ cli
   .command('[root]', 'start dev server') // default command
   .alias('serve') // the command is called 'serve' in Vite's API
   .alias('dev') // alias to align with the script name
-  .option('--host [host]', `[string] specify hostname`)
+  .option('--host [host]', `[string] specify hostname`, { type: [convertHost] })
   .option('--port <port>', `[number] specify port`)
   .option('--https', `[boolean] use TLS + HTTP/2`)
   .option('--open [path]', `[boolean | string] open browser on startup`)
@@ -306,7 +316,7 @@ cli
 // preview
 cli
   .command('preview [root]', 'locally preview production build')
-  .option('--host [host]', `[string] specify hostname`)
+  .option('--host [host]', `[string] specify hostname`, { type: [convertHost] })
   .option('--port <port>', `[number] specify port`)
   .option('--strictPort', `[boolean] exit if specified port is already in use`)
   .option('--https', `[boolean] use TLS + HTTP/2`)