From 8b6ce9f880d9ec695698936bcec7e43dc9ac04ca Mon Sep 17 00:00:00 2001
From: Alexandre Geissmann <alex@la-bonaventure.com>
Date: Thu, 25 Jun 2020 19:12:35 -0400
Subject: [PATCH] feat: exit build with error when fail to resolve module (fix
 #459)

---
 src/node/build/index.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/node/build/index.ts b/src/node/build/index.ts
index d8d41710fc2af1..1eed860d65d83d 100644
--- a/src/node/build/index.ts
+++ b/src/node/build/index.ts
@@ -59,6 +59,13 @@ const dynamicImportWarningIgnoreList = [
 export const onRollupWarning: (
   spinner: Ora | undefined
 ) => InputOptions['onwarn'] = (spinner) => (warning, warn) => {
+  if (warning.code === 'UNRESOLVED_IMPORT') {
+    console.error(
+      chalk.red(`[vite]: Rollup failed to resolve a module, this is most likely unintended because it can break your application at runtime. 
+If you do want to externalize this module explicitly add it to \`rollupInputOptions.external\``)
+    )
+    throw new Error(warning.message)
+  }
   if (
     warning.plugin === 'rollup-plugin-dynamic-import-variables' &&
     dynamicImportWarningIgnoreList.some((msg) => warning.message.includes(msg))