Function formatCreditCost

apps/sim/lib/billing/credits/conversion.ts:38–54

(
  dollars: number | null | undefined,
  opts?: { emptyForZeroOrLess?: boolean }
)

 * the trace view wants `undefined` so it can hide the chip entirely.
 */
export function formatCreditCost(
  dollars: number | null | undefined,
  opts?: { emptyForZeroOrLess?: boolean }
): string | undefined {
  if (dollars === undefined || dollars === null || !Number.isFinite(dollars)) {
    return opts?.emptyForZeroOrLess ? undefined : '—'
  }

  const credits = dollarsToCredits(dollars)

  if (credits <= 0) {
    if (dollars > 0) return '<1 credit'
    return opts?.emptyForZeroOrLess ? undefined : '0 credits'
  }

  return `${credits.toLocaleString()} ${credits === 1 ? 'credit' : 'credits'}`
}

/**
 * Splits a set of cost components into integer credits that sum *exactly* to