function makeRelativeDate()

in apps-rendering/src/date.ts [54:92]

35 lines of code
10 McCabe index (conditional complexity)


function makeRelativeDate(date: Date): string | null {
	const then: Date = new Date(date);
	const now: Date = new Date();

	if (!isValidDate(then)) {
		return null;
	}

	const delta: number = parseInt(
		`${(now.valueOf() - then.valueOf()) / 1000}`,
		10,
	);

	if (delta < 0) {
		return null;
	} else if (delta < 55) {
		return `${delta}s`;
	} else if (delta < 55 * 60) {
		const minutesAgo = Math.round(delta / 60);

		if (minutesAgo === 1) {
			return 'Now';
		} else {
			return `${minutesAgo}m ago`;
		}
	} else if (isToday(then) || isWithin24Hours(then)) {
		const hoursAgo = Math.round(delta / 3600);
		return `${hoursAgo}h ago`;
	} else if (isWithinPastWeek(then)) {
		const daysAgo = Math.round(delta / 3600 / 24);
		return `${daysAgo}d ago`;
	} else if (isWithinPastYear(then)) {
		const weeksAgo = Math.round(delta / 3600 / 24 / 7);
		return `${weeksAgo}w ago`;
	} else {
		const yearsAgo = Math.round(delta / 3600 / 24 / 7 / 52);
		return `${yearsAgo}y ago`;
	}
}