Initial commit

src/utils/time.ts

@@ -0,0 +1,22 @@
+import { Temporal } from "@js-temporal/polyfill";
+
+function lt(one: Temporal.Duration, other: Temporal.DurationLike): boolean {
+	return Temporal.Duration.compare(one, other) < 0
+}
+
+export function printTime(time: Temporal.ZonedDateTime): string {
+	const delta = time.until(Temporal.Now.zonedDateTimeISO())
+	if (lt(delta, { minutes: 1 })) return 'now'
+	if (lt(delta, { hours: 1 })) return `${delta.minutes} minutes ago`
+	if (lt(delta, { days: 1 })) return `${delta.hours} hours ago`
+	if (lt(delta, { days: 7 })) return `${delta.round({ smallestUnit: 'days' }).days} days ago`
+	return `at ${time.toPlainDate().toString()} ${time.toPlainTime().toString({ smallestUnit: 'minutes' })}`
+}
+
+export function parseTime(string: string): Temporal.ZonedDateTime {
+	return Temporal.ZonedDateTime.from(string)
+}
+
+export function isValidTime(string: string): boolean {
+		try { parseTime(string); return true } catch { return false }
+}