wip: warn v-bind object ordering

packages/compiler-core/src/compat/compatConfig.ts

@@ -54,10 +54,10 @@ const deprecationData: Record<CompilerDeprecationTypes, DeprecationData> = {
   [CompilerDeprecationTypes.COMPILER_V_BIND_OBJECT_ORDER]: {
     message:
       `v-bind="obj" usage is now order sensitive and behaves like JavaScript ` +
-      `object spread: it will now overwrite an existing attribute that appears ` +
-      `before v-bind in the case of conflicting keys. To retain 2.x behavior, ` +
-      `move v-bind to and make it the first attribute. If all occurences ` +
-      `of this warning are working as intended, you can suppress it.`,
+      `object spread: it will now overwrite an existing non-mergeable attribute ` +
+      `that appears before v-bind in the case of conflict. ` +
+      `To retain 2.x behavior, move v-bind to make it the first attribute. ` +
+      `You can also suppress this warning if the usage is intended.`,
     link: `https://v3.vuejs.org/guide/migration/v-bind.html`
   },
 
@@ -98,17 +98,24 @@ function getCompatValue(
   }
 }
 
+export function isCompatEnabled(
+  key: CompilerDeprecationTypes,
+  context: ParserContext | TransformContext
+) {
+  const mode = getCompatValue('MODE', context)
+  const value = getCompatValue(key, context)
+  // in v3 mode, only enable if explicitly set to true
+  // otherwise enable for any non-false value
+  return mode === 3 ? value === true : value !== false
+}
+
 export function checkCompatEnabled(
   key: CompilerDeprecationTypes,
   context: ParserContext | TransformContext,
   loc: SourceLocation | null,
   ...args: any[]
 ): boolean {
-  const mode = getCompatValue('MODE', context)
-  const value = getCompatValue(key, context)
-  // in v3 mode, only enable if explicitly set to true
-  // otherwise enable for any non-false value
-  const enabled = mode === 3 ? value === true : value !== false
+  const enabled = isCompatEnabled(key, context)
   if (__DEV__ && enabled) {
     warnDeprecation(key, context, loc, ...args)
   }