49 lines
1.4 KiB
JavaScript
49 lines
1.4 KiB
JavaScript
export const abbrNum = n => {
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if (n < 1e4) return n
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if (n >= 1e4 && n < 1e6) return +(n / 1e3).toFixed(1) + 'k'
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if (n >= 1e6 && n < 1e9) return +(n / 1e6).toFixed(1) + 'm'
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if (n >= 1e9 && n < 1e12) return +(n / 1e9).toFixed(1) + 'b'
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if (n >= 1e12) return +(n / 1e12).toFixed(1) + 't'
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}
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/**
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* Take a number that represents a count
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* and return a formatted label e.g. 0 sats, 1 sat, 2 sats
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*
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* @param n The number of sats
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* @param opts Options
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* @param opts.abbreviate Whether to abbreviate the number
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* @param opts.unitSingular The singular unit label
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* @param opts.unitPlural The plural unit label
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* @param opts.format Format the number with `Intl.NumberFormat`. Can only be used if `abbreviate` is false
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*/
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export const numWithUnits = (n, {
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abbreviate = true,
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unitSingular = 'sat',
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unitPlural = 'sats',
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format = false
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} = {}) => {
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if (isNaN(n)) {
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return `${n} ${unitPlural}`
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}
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return `${abbreviate ? abbrNum(n) : format ? new Intl.NumberFormat().format(n) : n} ${n === 1 ? unitSingular : unitPlural}`
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}
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export const fixedDecimal = (n, f) => {
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return Number.parseFloat(n).toFixed(f)
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}
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export const msatsToSats = msats => {
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if (msats === null || msats === undefined) {
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return null
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}
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return Number(BigInt(msats) / 1000n)
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}
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export const msatsToSatsDecimal = msats => {
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if (msats === null || msats === undefined) {
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return null
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}
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return fixedDecimal(Number(msats) / 1000.0, 3)
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}
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