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import {append} from 'rambda'
const list = [1, 2, 3]
describe('R.append', () => {  it('happy', () => {    const result = append(4, list)
    result // $ExpectType readonly number[]  })  it('curried', () => {    const result = append(4)(list)
    result // $ExpectType readonly number[]  })})