Prevent the use of unknown test modifiers.
import tap from 'tap';
tap.onlu('some test', t => {});
test.only.onlu('some test', t => {});
test.beforeeach('some test', t => {});
test.skop('some test', t => {});
import tap from 'tap';
tap.only('some test', t => {});
tap.skip('some test', t => {});
tap.beforeEach('some test', t => {});