//// [usingDeclarationsWithESClassDecorators.3.ts]
//!   x Expression expected
//!    ,-[7:1]
//!  4 | 
//!  5 | using before = null;
//!  6 | 
//!  7 | @dec
//!    : ^
//!  8 | export default class C {
//!  9 | }
//!    `----
