import {inc} from './inc'import {isNil} from './isNil'import {unless} from './unless'
test('happy', () => { const safeInc = unless(isNil, inc) expect(safeInc(null)).toBeNull() expect(safeInc(1)).toBe(2)})
test('curried', () => { const safeIncCurried = unless(isNil)(inc) expect(safeIncCurried(null)).toBeNull()})