text: // This file was procedurally generated from the following sources:
  // - src/subclass-builtins/Promise.case
  // - src/subclass-builtins/default/expression.template
  /*---
  description: new SubPromise() instanceof Promise (Subclass instanceof Heritage)
  features: [Promise]
  flags: [generated]
  ---*/
  
  
  const Subclass = class extends Promise {}
  
  const sub = new Subclass(() => {});
  assert(sub instanceof Subclass);
  assert(sub instanceof Promise);
  