perf: use parallel builds

src/node/build/build.ts

@@ -15,6 +15,7 @@ export type BuildOptions = Pick<
 >
 
 export async function build(buildOptions: BuildOptions = {}) {
+  const start = Date.now()
   process.env.NODE_ENV = 'production'
   const siteConfig = await resolveConfig(buildOptions.root)
 
@@ -66,5 +67,5 @@ export async function build(buildOptions: BuildOptions = {}) {
   } finally {
     await fs.remove(siteConfig.tempDir)
   }
-  console.log('✨ done.')
+  console.log(`✨ done in ${((Date.now() - start) / 1000).toFixed(2)}s.`)
 }

src/node/build/bundle.ts

@@ -153,26 +153,15 @@ export async function bundle(
   let clientResult, serverResult
 
   const spinner = ora()
-  spinner.start('building client bundle...')
+  spinner.start('building client + server bundles...')
   try {
-    clientResult = await build(viteOptions)
-  } catch (e) {
-    spinner.stopAndPersist({
-      symbol: failMark
-    })
-    throw e
-  }
-  spinner.stopAndPersist({
-    symbol: okMark
-  })
-
-  spinner.start('building server bundle...')
-  isClientBuild = false
-  try {
-    serverResult = await ssrBuild({
+    ;[clientResult, serverResult] = await Promise.all([
+      build(viteOptions),
+      ssrBuild({
         ...viteOptions,
         outDir: config.tempDir
       })
+    ])
   } catch (e) {
     spinner.stopAndPersist({
       symbol: failMark