fix(compiler): prevent usage of reserved control flow symbol in custom interpolation context. (#55809)

bougwal · atscott · commit 2bb12ac02f8a · 2024-05-16T09:28:13.000-07:00
* Fixes the issue where using a reserved control flow @ symbol in a custom interpolation context yields improper parser feedback. PR Close #55809
diff --git a/packages/compiler/src/assertions.ts b/packages/compiler/src/assertions.ts
@@ -7,6 +7,7 @@
  */
 
 const UNUSABLE_INTERPOLATION_REGEXPS = [
+  /@/, // control flow reserved symbol
   /^\s*$/, // empty
   /[<>]/, // html tag
   /^[{}]$/, // i18n expansion
