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import {join, unapply, sum} from 'rambda'
describe('R.unapply', () => {  it('happy', () => {    const fn = unapply(sum)
    fn(1, 2, 3) // $ExpectType number  })
  it('joins a string', () => {    const fn = unapply(join(''))
    fn('s', 't', 'r', 'i', 'n', 'g') // $ExpectType string  })})