52 lines
1.3 KiB
TypeScript
52 lines
1.3 KiB
TypeScript
export type DateFormatVariant =
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| "date"
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| "time"
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| "datetime"
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| "datetime-seconds";
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const FALLBACKS: Record<DateFormatVariant, string> = {
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date: "",
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time: "—",
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datetime: "—",
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"datetime-seconds": "—",
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};
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/**
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* Format a Date for display. Kept as a single shared helper so the various
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* admin/site pages no longer each redefine their own copy.
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*
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* - "date" → 2026-07-18
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* - "time" → 18:30
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* - "datetime" → 2026-07-18 18:30
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* - "datetime-seconds"→ 2026-07-18 18:30:45
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*
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* `fallback` overrides the default em-dash / empty string when the value is
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* null/undefined.
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*/
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export function formatDate(
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d: Date | null | undefined,
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variant: DateFormatVariant = "datetime",
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fallback?: string,
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): string {
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if (!d) return fallback ?? FALLBACKS[variant];
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const iso = d.toISOString();
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switch (variant) {
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case "date":
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return iso.slice(0, 10);
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case "time":
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return iso.slice(11, 16);
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case "datetime-seconds":
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return iso.slice(0, 19).replace("T", " ");
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default:
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return iso.slice(0, 16).replace("T", " ");
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}
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}
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/**
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* Format a number with grouped thousands. Uses the provided locale or a
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* consistent default for admin pages. Keeps number formatting in one place.
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*/
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export function formatNumber(n: number, locale: string = "en-US"): string {
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return n.toLocaleString(locale);
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}
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