From 9cb74960ac2f77737016b8d637549127dda74646 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Sat, 21 Nov 2020 23:53:32 -0500
Subject: [PATCH] chore: move style vars deprecation warning to a parse error

---
 packages/compiler-sfc/src/parse.ts | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/compiler-sfc/src/parse.ts b/packages/compiler-sfc/src/parse.ts
index 41662201..1df52721 100644
--- a/packages/compiler-sfc/src/parse.ts
+++ b/packages/compiler-sfc/src/parse.ts
@@ -11,7 +11,7 @@ import { RawSourceMap, SourceMapGenerator } from 'source-map'
 import { TemplateCompiler } from './compileTemplate'
 import { Statement } from '@babel/types'
 import { parseCssVars } from './cssVars'
-import { warnExperimental, warnOnce } from './warn'
+import { warnExperimental } from './warn'
 
 export interface SFCParseOptions {
   filename?: string
@@ -168,9 +168,11 @@ export function parse(
       case 'style':
         const style = createBlock(node, source, pad) as SFCStyleBlock
         if (style.attrs.vars) {
-          warnOnce(
-            `<style vars> has been replaced by a new proposal: ` +
-              `https://github.com/vuejs/rfcs/pull/231`
+          errors.push(
+            new SyntaxError(
+              `<style vars> has been replaced by a new proposal: ` +
+                `https://github.com/vuejs/rfcs/pull/231`
+            )
           )
         }
         descriptor.styles.push(style)