import * as smartexpect from './dist_ts/index.js';
class Foo { constructor(){ this.foo='bar'; } }
console.log('foo in instance:', 'foo' in new Foo());
console.log('hasOwn foo:', Object.prototype.hasOwnProperty.call(new Foo(), 'foo'));
try {
  smartexpect.expect(new Foo()).object.toHaveProperty('foo');
  console.log('toHaveProperty passed');
} catch (err) {
  console.error('toHaveProperty failed:', err.message);
}
try {
  smartexpect.expect(new Foo()).object.toHaveOwnProperty('foo');
  console.log('toHaveOwnProperty passed');
} catch (err) {
  console.error('toHaveOwnProperty failed:', err.message);
}