45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
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const Sakuya = (function() {
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const formatter = new Intl.RelativeTimeFormat(undefined, { numeric: 'auto' });
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const divisions = [
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{ amount: 60, name: 'seconds' },
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{ amount: 60, name: 'minutes' },
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{ amount: 24, name: 'hours' },
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{ amount: 7, name: 'days' },
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{ amount: 4.34524, name: 'weeks' },
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{ amount: 12, name: 'months' },
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{ amount: Infinity, name: 'years' },
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];
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const formatTimeAgo = function(date) {
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let duration = (date - new Date()) / 1000;
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for(const div of divisions) {
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if(Math.abs(duration) < div.amount)
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return formatter.format(Math.round(duration), div.name);
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duration /= div.amount;
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}
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};
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// todo: update at intervals
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const trackElement = function(elem) {
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if(elem.dateTime === undefined)
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return;
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try {
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const dateTime = new Date(elem.dateTime);
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elem.textContent = formatTimeAgo(dateTime);
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} catch {}
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};
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const trackElements = function(elems) {
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for(const elem of elems)
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trackElement(elem);
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};
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return {
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formatTimeAgo: formatTimeAgo,
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trackElement: trackElement,
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trackElements: trackElements,
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};
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})();
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