28 lines
787 B
TypeScript
28 lines
787 B
TypeScript
export interface Tier {
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min: number
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max: number
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pct: number
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}
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export const TIERS: readonly Tier[] = [
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{ min: 5_000, max: 30_000, pct: 8 },
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{ min: 30_000, max: 100_000, pct: 6 },
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{ min: 100_000, max: 600_000, pct: 4 },
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] as const
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export const TIER_MIN = TIERS[0].min
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export const TIER_MAX = TIERS[TIERS.length - 1].max
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export function findTier(amount: number): Pick<Tier, 'pct'> {
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const match = TIERS.find((t) => amount >= t.min && amount <= t.max)
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if (match) return match
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if (amount > TIER_MAX) return { pct: TIERS[TIERS.length - 1].pct }
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return { pct: TIERS[0].pct }
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}
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export function progressPercent(amount: number): number {
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if (amount <= TIER_MIN) return 0
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if (amount >= TIER_MAX) return 100
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return ((amount - TIER_MIN) / (TIER_MAX - TIER_MIN)) * 100
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}
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