manifold/common/util/format.ts

51 lines
1.3 KiB
TypeScript

import { ENV_CONFIG } from '../envs/constants'
const formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
maximumFractionDigits: 0,
minimumFractionDigits: 0,
})
export function formatMoney(amount: number) {
const newAmount = Math.round(amount) === 0 ? 0 : amount // handle -0 case
return (
ENV_CONFIG.moneyMoniker + ' ' + formatter.format(newAmount).replace('$', '')
)
}
export function formatWithCommas(amount: number) {
return formatter.format(amount).replace('$', '')
}
const decimalPlaces = (x: number) => Math.ceil(-Math.log10(x)) - 2
export function formatPercent(decimalPercent: number) {
const displayedFigs =
(decimalPercent >= 0.02 && decimalPercent <= 0.98) ||
decimalPercent <= 0 ||
decimalPercent >= 1
? 0
: Math.max(
decimalPlaces(decimalPercent),
decimalPlaces(1 - decimalPercent)
)
return (decimalPercent * 100).toFixed(displayedFigs) + '%'
}
export function toCamelCase(words: string) {
const camelCase = words
.split(' ')
.map((word) => word.trim())
.filter((word) => word)
.map((word, index) =>
index === 0 ? word : word[0].toLocaleUpperCase() + word.substring(1)
)
.join('')
// Remove non-alpha-numeric-underscore chars.
const regex = /(?:^|\s)(?:[a-z0-9_]+)/gi
return (camelCase.match(regex) || [])[0] ?? ''
}