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
|
import {I18n} from '@lingui/core'
const truncateRounding = (num: number, factors: Array<number>): number => {
for (let i = factors.length - 1; i >= 0; i--) {
let factor = factors[i]
if (num >= 10 ** factor) {
if (factor === 10) {
// CA and ES abruptly jump from "9999,9 M" to "10 mil M"
factor--
}
const precision = 1
const divisor = 10 ** (factor - precision)
return Math.floor(num / divisor) * divisor
}
}
return num
}
const koFactors = [3, 4, 8, 12]
const hiFactors = [3, 5, 7, 9, 11, 13]
const esCaFactors = [3, 6, 10, 12]
const itDeFactors = [6, 9, 12]
const jaZhFactors = [4, 8, 12]
const glFactors = [6, 12]
const restFactors = [3, 6, 9, 12]
export const formatCount = (i18n: I18n, num: number) => {
const locale = i18n.locale
let truncatedNum: number
if (locale === 'hi') {
truncatedNum = truncateRounding(num, hiFactors)
} else if (locale === 'ko') {
truncatedNum = truncateRounding(num, koFactors)
} else if (locale === 'es' || locale === 'ca') {
truncatedNum = truncateRounding(num, esCaFactors)
} else if (locale === 'ja' || locale === 'zh-CN' || locale === 'zh-TW') {
truncatedNum = truncateRounding(num, jaZhFactors)
} else if (locale === 'it' || locale === 'de') {
truncatedNum = truncateRounding(num, itDeFactors)
} else if (locale === 'gl') {
truncatedNum = truncateRounding(num, glFactors)
} else {
truncatedNum = truncateRounding(num, restFactors)
}
return i18n.number(truncatedNum, {
notation: 'compact',
maximumFractionDigits: 1,
// Ideally we'd use roundingMode: 'trunc' but it isn't supported on RN.
})
}
|
