get-datetime.js
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get-datetime.js
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	"use strict";

	const dateFormatters = {
	"yyyy-mm-dd": date => date.toISOString().split("T")[0],
	};
	const timeFormatters = {
	"hh:mm:ss": parsed_time => parsed_time.substring(0, 8),
	"hh:mm:ss.mmm": parsed_time => parsed_time.slice(0, -1),
	};
	const dateFormats = Object.keys(dateFormatters);
	const timeFormats = Object.keys(timeFormatters);

	function getTimeOfNow() {
	return getDateTime(new Date(), "hh:mm:ss.mmm");
	}

	function getNow() {
	return getDateTime(new Date(), "yyyy-mm-dd hh:mm:ss.mmm");
	}

	function getDateTime(date, format_string = "yyyy-mm-dd hh:mm:ss") {
	const formats = format_string.split(" ");
	return formats
	.reduce((date_string, format) => {
	if (dateFormats.includes(format)) {
	return date_string + " " + dateFormatters[format](date);
	} else if (timeFormats.includes(format)) {
	const parsed_time = date.toISOString().split("T")[1];
	return date_string + " " + timeFormatters[format](parsed_time);
	} else {
	throw new Error("Unknown format: " + format);
	}
	}, "")
	.trimLeft();
	}

	module.exports = { getTimeOfNow, getNow, getDateTime };