import { of } from 'rxjs'; import { bufferCount } from 'rxjs/operators'; it('should infer correctly', () => { const o = of(1, 2, 3).pipe(bufferCount(1)); // $ExpectType Observable const p = of(1, 2, 3).pipe(bufferCount(1, 7)); // $ExpectType Observable }); it('should enforce types', () => { const o = of(1, 2, 3).pipe(bufferCount()); // $ExpectError }); it('should enforce type of bufferSize', () => { const o = of(1, 2, 3).pipe(bufferCount('7')); // $ExpectError }); it('should enforce type of startBufferEvery', () => { const o = of(1, 2, 3).pipe(bufferCount(1, '7')); // $ExpectError });