From 810fe4d583aac646bba63c4181826f1629f6df70 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Sat, 17 Apr 2021 16:05:27 -0400
Subject: [PATCH] wip: default mode for compat build

---
 .../runtime-core/src/compat/compatConfig.ts     |  4 +++-
 packages/vue-compat/src/index.ts                | 17 ++++++-----------
 packages/vue/src/index.ts                       | 17 ++++++-----------
 3 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/packages/runtime-core/src/compat/compatConfig.ts b/packages/runtime-core/src/compat/compatConfig.ts
index 807bfc12..290aa711 100644
--- a/packages/runtime-core/src/compat/compatConfig.ts
+++ b/packages/runtime-core/src/compat/compatConfig.ts
@@ -456,7 +456,9 @@ export type CompatConfig = Partial<
   MODE?: 2 | 3
 }
 
-export const globalCompatConfig: CompatConfig = {}
+export const globalCompatConfig: CompatConfig = {
+  MODE: 2
+}
 
 export function configureCompat(config: CompatConfig) {
   if (__DEV__) {
diff --git a/packages/vue-compat/src/index.ts b/packages/vue-compat/src/index.ts
index abd669d0..84573635 100644
--- a/packages/vue-compat/src/index.ts
+++ b/packages/vue-compat/src/index.ts
@@ -55,22 +55,17 @@ function compileToFunction(
     extend(
       {
         hoistStatic: true,
-        onError(err) {
-          if (__DEV__) {
-            onError(err)
-          } else {
-            /* istanbul ignore next */
-            throw err
-          }
-        },
-        onWarn: __DEV__ ? onError : NOOP
+        onError: __DEV__ ? onError : undefined,
+        onWarn: __DEV__ ? e => onError(e, true) : NOOP
       } as CompilerOptions,
       options
     )
   )
 
-  function onError(err: CompilerError) {
-    const message = `Template compilation error: ${err.message}`
+  function onError(err: CompilerError, asWarning = false) {
+    const message = asWarning
+      ? err.message
+      : `Template compilation error: ${err.message}`
     const codeFrame =
       err.loc &&
       generateCodeFrame(
diff --git a/packages/vue/src/index.ts b/packages/vue/src/index.ts
index ced879a9..60ea75fd 100644
--- a/packages/vue/src/index.ts
+++ b/packages/vue/src/index.ts
@@ -49,22 +49,17 @@ function compileToFunction(
     extend(
       {
         hoistStatic: true,
-        onError(err) {
-          if (__DEV__) {
-            onError(err)
-          } else {
-            /* istanbul ignore next */
-            throw err
-          }
-        },
-        onWarn: __DEV__ ? onError : NOOP
+        onError: __DEV__ ? onError : undefined,
+        onWarn: __DEV__ ? e => onError(e, true) : NOOP
       } as CompilerOptions,
       options
     )
   )
 
-  function onError(err: CompilerError) {
-    const message = `Template compilation error: ${err.message}`
+  function onError(err: CompilerError, asWarning = false) {
+    const message = asWarning
+      ? err.message
+      : `Template compilation error: ${err.message}`
     const codeFrame =
       err.loc &&
       generateCodeFrame(