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Ref-Bit / addDays

Created October 18, 2022 13:09

Add days to date object

	const addDays = (date, days) => {
	const result = new Date(date);
	result.setDate(result.getDate() + days);
	return result;
	}

Ref-Bit / asyncSleep

Created September 13, 2022 14:01

Add custom delay to asynchronous calls

const delay = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));

Ref-Bit / convertHHMMSSToSeconds

Created September 26, 2021 14:31

Convert time string format "hh:mm:ss" or "mm:ss" or "ss" to seconds

	const convertHHMMSSToSeconds = timeStr => {
	let p = timeStr.split(':'),
	s = 0,
	m = 1;

	while (p.length > 0) {
	s += m * parseInt(p.pop(), 10);
	m *= 60;
	}

Ref-Bit / toBasicToken

Created June 17, 2021 11:31

Convert authentication info (username, password) to Basic token in NodeJS

const token = 'Basic ' + Buffer.from(`${username}:${password}`, 'utf8').toString('base64');

Ref-Bit / removeObjKeys

Created December 31, 2020 12:25

Remove a property without mutating the object

	const car = {
	color: 'blue',
	brand: 'Ford'
	}
	const prop = 'color';

	const newCar = Object.keys(car).reduce((object, key) => {
	if (key !== prop) {
	object[key] = car[key]
	}

Ref-Bit / onlyUnique

Created December 30, 2020 09:18

Get all unique values in a JavaScript array (remove duplicates)

const onlyUnique = (value, index, self) => self.indexOf(value) === index;

Ref-Bit / formatBytes

Created December 20, 2020 15:39

Convert Bytes number into (KB, MB, GB, TB,...) depending on its size.

	const formatBytes = (bytes, decimals = 2) => {
	if (bytes === 0) return '0 Bytes';

	const k = 1024;
	const dm = decimals < 0 ? 0 : decimals;
	const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

	const i = Math.floor(Math.log(bytes) / Math.log(k));

	return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];

Ref-Bit / convertFileToBlob

Created December 10, 2020 11:40

const convertFileToBlob = file => return URL.createObjectURL(file);

Ref-Bit / convertFileToBase64

Created December 10, 2020 11:38

This is a function to convert file to base64 upon upload

	const convertFileToBase64 = file =>
	new Promise((resolve, reject) => {
	const reader = new FileReader();
	reader.readAsDataURL(file);
	reader.onload = () => resolve(reader.result);
	reader.onerror = error => reject(error);
	});

Ref-Bit / anotherConvertFloatToHHMMSS

Last active December 9, 2020 07:29

This is a helper function to convert a float number to time format "hh:mm:ss".

const anotherConvertFloatToHHMMSS = secs => new Date(secs * 1000).toISOString().substr(11, 8);