text: import test from 'tape';
  import { isNull } from '../src';
  
  test('Tests - isNull.js', t => {
      t.equal(isNull(null), true, 'null is null');
      t.equal(isNull({}), false, '{} is not null');
      t.equal(isNull(false), false, 'false is not null');
      t.equal(isNull([]), false, '[] is not null');
      t.end();
  });
  