1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
import { composeAsync } from './composeAsync.js'import { delay } from './delay.js'import { partitionAsync } from './partitionAsync.js'
test('with composeAsync', async () => {  const predicate = async (x, i) => {    await delay(100)    expect(typeof i).toBe('number')
    return x > 2  }  const list = [ 1, 2, 3, 4, 11 ]
  const result = await composeAsync(partitionAsync(predicate), x =>    x.filter(xx => xx < 10))(list)  const expectedResult = [    [ 3, 4 ],    [ 1, 2 ],  ]
  expect(result).toEqual(expectedResult)})
test('with array', async () => {  const predicate = async (x, i) => {    await delay(100)    expect(typeof i).toBe('number')
    return x > 2  }  const list = [ 1, 2, 3, 4 ]
  const result = await partitionAsync(predicate, list)  const expectedResult = [    [ 3, 4 ],    [ 1, 2 ],  ]  result  expect(result).toEqual(expectedResult)})
test('with object', async () => {  const predicate = (value, prop) => {    expect(typeof prop).toBe('string')
    return value > 2  }  const hash = {    a : 1,    b : 2,    c : 3,    d : 4,  }
  const result = await partitionAsync(predicate)(hash)  const expectedResult = [    {      c : 3,      d : 4,    },    {      a : 1,      b : 2,    },  ]  expect(result).toEqual(expectedResult)})
test('readme example', async () => {  const list = [ 1, 2, 3 ]  const obj = {    a : 1,    b : 2,    c : 3,  }  const predicate = x => x > 2
  const result = await Promise.all([    partitionAsync(predicate, list),    partitionAsync(predicate, obj),  ])  const expected = [    [ [ 3 ], [ 1, 2 ] ],    [      { c : 3 },      {        a : 1,        b : 2,      },    ],  ]  expect(result).toEqual(expected)})