49 lines
1.4 KiB
TypeScript
49 lines
1.4 KiB
TypeScript
export const timestampFromDatetimeLocal = (
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datetimeLocal: string,
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units: "s" | "ms" | "ns",
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): bigint => {
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const [date, time] = datetimeLocal.split("T");
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const [year, month, day] = date.split("-");
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const [hours, minutes] = time.split(":");
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const dateObj = new Date(
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Number(year),
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Number(month) - 1,
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Number(day),
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Number(hours),
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Number(minutes),
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);
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const timestampMillis = BigInt(dateObj.getTime());
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switch (units) {
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case "s":
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return timestampMillis / 1000n; // seconds
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case "ns":
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return timestampMillis * 1000_000n; // nanoseconds
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case "ms":
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return timestampMillis; // milliseconds
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default:
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throw new Error("Unexpected unit value");
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}
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};
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// With stripped seconds and milliseconds
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export const datetimeLocalFromTimestamp = (timestamp: number): string => {
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const minDate = new Date(timestamp);
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const minMonth = minDate.getMonth() + 1; // It's 0-indexed
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const minMonthStr = minMonth < 10 ? `0${minMonth}` : String(minMonth);
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const minDay = minDate.getDate();
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const minDayStr = minDay < 10 ? `0${minDay}` : String(minDay);
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const minHours = minDate.getHours();
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const minHoursStr = minHours < 10 ? `0${minHours}` : String(minHours);
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const minMinutes = minDate.getMinutes();
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const minMinutesStr = minMinutes < 10 ? `0${minMinutes}` : String(minMinutes);
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return `${minDate.getFullYear()}-${minMonthStr}-${minDayStr}T${minHoursStr}:${minMinutesStr}`;
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};
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