From 2e10261b38f1b7b673626db942a6203d4159d16f Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Mon, 28 Jun 2021 17:57:58 -0400
Subject: [PATCH] chore: warn script setup compiler macro imports

---
 packages/compiler-sfc/src/compileScript.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/compiler-sfc/src/compileScript.ts b/packages/compiler-sfc/src/compileScript.ts
index de688acd..3e72da9c 100644
--- a/packages/compiler-sfc/src/compileScript.ts
+++ b/packages/compiler-sfc/src/compileScript.ts
@@ -778,6 +778,9 @@ export function compileScript(
             imported === DEFINE_EMITS ||
             imported === DEFINE_EXPOSE)
         ) {
+          warnOnce(
+            `\`${imported}\` is a compiler macro and no longer needs to be imported.`
+          )
           removeSpecifier(i)
         } else if (existing) {
           if (existing.source === source && existing.imported === imported) {