From: Evan You <yyx990803@gmail.com>
Date: Fri, 16 Apr 2021 16:26:17 +0000 (-0400)
Subject: wip: invert compiler compat behavior default during tests
X-Git-Tag: v3.1.0-beta.1~59^2~34
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad97bbab851ac69f115e018761ceb76abc5df56a;p=thirdparty%2Fvuejs%2Fcore.git

wip: invert compiler compat behavior default during tests
---

diff --git a/packages/compiler-core/src/compat/compatConfig.ts b/packages/compiler-core/src/compat/compatConfig.ts
index f5acca1b62..91acbbd874 100644
--- a/packages/compiler-core/src/compat/compatConfig.ts
+++ b/packages/compiler-core/src/compat/compatConfig.ts
@@ -102,7 +102,9 @@ export function checkCompatEnabled(
   loc: SourceLocation | null,
   ...args: any[]
 ): boolean {
-  const enabled = getCompatValue(key, context) !== false
+  const value = getCompatValue(key, context)
+  // during tests, only enable when value is explicitly true
+  const enabled = __TEST__ ? value === true : value !== false
   if (__DEV__ && enabled) {
     warnDeprecation(key, context, loc, ...args)
   }
diff --git a/packages/compiler-core/src/errors.ts b/packages/compiler-core/src/errors.ts
index d1f1e0a8c6..ae9da226a1 100644
--- a/packages/compiler-core/src/errors.ts
+++ b/packages/compiler-core/src/errors.ts
@@ -13,9 +13,9 @@ export function defaultOnError(error: CompilerError) {
   throw error
 }
 
-export function defaultOnWarn(msg: string | CompilerError) {
-  __DEV__ &&
-    console.warn(`[Vue warn]`, typeof msg === 'string' ? msg : msg.message)
+export function defaultOnWarn(msg: CompilerError) {
+  throw new Error('foo')
+  __DEV__ && console.warn(`[Vue warn]`, msg.message)
 }
 
 export function createCompilerError<T extends number>(