conductor/__tests__/type.js

A modern & functional JavaScript utility library

const type = require('../src/type')

class Person {}
const asyncFn = async () => {}
const promiseFn = () => Promise.resolve()

describe('type', () => {
  it('should return the input\'s type', () => {
    expect(type(null)).toBe('null')
    expect(type(undefined)).toBe('undefined')
    expect(type('hello')).toBe('string')
    expect(type(true)).toBe('boolean')
    expect(type(2)).toBe('number')
    expect(type([])).toBe('array')
    expect(type({})).toBe('object')
    expect(type(new Date())).toBe('date')
    expect(type(new Map())).toBe('map')
    expect(type(new Set())).toBe('set')
    expect(type(() => {})).toBe('function')
    expect(type(asyncFn)).toBe('function')
    expect(type(promiseFn)).toBe('function')
    expect(type(new Person())).toBe('person')
    expect(type(asyncFn())).toBe('promise')
    expect(type(promiseFn())).toBe('promise')
  })
})