25 lines
818 B
TypeScript
25 lines
818 B
TypeScript
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import { clsx, type ClassValue } from "clsx";
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import { twMerge } from "tailwind-merge";
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/** Merge conditional class names and de-duplicate Tailwind utilities. */
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export function cn(...inputs: ClassValue[]) {
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return twMerge(clsx(inputs));
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}
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/** Format a number of cents (e.g. 900) as a currency string ("$9"). */
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export function formatPrice(cents: number, currency = "USD") {
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const dollars = cents / 100;
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return new Intl.NumberFormat("en-US", {
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style: "currency",
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currency,
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maximumFractionDigits: dollars % 1 === 0 ? 0 : 2,
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}).format(dollars);
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}
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/** The monthly usage bucket key, e.g. "2026-06". Pass a date for testability. */
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export function periodKey(date: Date): string {
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const y = date.getUTCFullYear();
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const m = String(date.getUTCMonth() + 1).padStart(2, "0");
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return `${y}-${m}`;
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}
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