File size: 1,326 Bytes
8059bf0 | 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 | export const TOKENS_PER_MILLION = 1_000_000
interface TokenPriceFormatOptions {
fractionDigits?: number
withCurrencySymbol?: boolean
emptyValue?: string
}
function isFiniteNumber(value: unknown): value is number {
return typeof value === 'number' && Number.isFinite(value)
}
export function calculateTokenUnitPrice(
cost: number | null | undefined,
tokens: number | null | undefined
): number | null {
if (!isFiniteNumber(cost) || !isFiniteNumber(tokens) || tokens <= 0) {
return null
}
return cost / tokens
}
export function calculateTokenPricePerMillion(
cost: number | null | undefined,
tokens: number | null | undefined
): number | null {
const unitPrice = calculateTokenUnitPrice(cost, tokens)
if (unitPrice == null) {
return null
}
return unitPrice * TOKENS_PER_MILLION
}
export function formatTokenPricePerMillion(
cost: number | null | undefined,
tokens: number | null | undefined,
options: TokenPriceFormatOptions = {}
): string {
const pricePerMillion = calculateTokenPricePerMillion(cost, tokens)
if (pricePerMillion == null) {
return options.emptyValue ?? '-'
}
const fractionDigits = options.fractionDigits ?? 4
const formatted = pricePerMillion.toFixed(fractionDigits)
return options.withCurrencySymbol == false ? formatted : `$${formatted}`
}
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