text: import isFunction from '../src/is-function'
  
  describe('isFunction', () => {
  	test('works', () => {
  		expect(isFunction(function () {})).toBe(true)
  		expect(isFunction(class {})).toBe(true)
  		expect(isFunction(() => {})).toBe(true)
  		expect(isFunction()).toBe(false)
  		expect(isFunction('a')).toBe(false)
  		expect(isFunction(1)).toBe(false)
  	})
  })
  