Skip to main content
Module

x/rambda/source/head-spec.ts

Faster and smaller alternative to Ramda
selfrefactor/rambda
Go to Latest
File
123456789101112131415161718192021222324
import {head} from 'rambda'
describe('R.head', () => {  it('string', () => {    const result = head('foo')    result // $ExpectType string  })
  it('array', () => {    const result = head([1, 2, 3])    result // $ExpectType number | undefined  })
  it('empty array - case 1', () => {    const result = head([])    result // $ExpectType undefined  })  it('empty array - case 2', () => {    const list = ['foo', 'bar'].filter(x => x.startsWith('a'))    const result = head(list)    result // $ExpectType string | undefined  })})