Oleg Chursin olegchursin

🐬

Common sense isn't very common.

Lead Software Engineer at Aon Cyber Solutions. Pixel manipulator with background in cognitive linguistics.

olegchursin / stringToId.ts

Created October 11, 2022 03:43

Convert a random string to camelized stringId

	function removeSpecialChars(str: string): string {
	return str.replace(/[^0-9a-zA-Z]/g, '');
	}

	function camelize(str: string): string {
	return str
	.replace(/(?:^\w\|[A-Z]\|\b\w)/g, function (word, index) {
	return index === 0 ? word.toLowerCase() : word.toUpperCase();
	})
	.replace(/\s+/g, '');

olegchursin / objectUtils.ts

Created July 26, 2022 16:47

Object utils

	type ScoreObj = { [key: string]: number };

	// Since we are sure that "scoreObj" is always of type {[key: string]: number;}
	// we can use our own typing for Object.entries().
	// It is still using a type assertion ("as any") which is not ideal,
	// but gives us the right typings in subsequnt methods
	type Entries<T> = { [K in keyof T]: [K, T[K]] }[keyof T];
	function objectEntries<T extends object>(t: T): Entries<T>[] {
	return Object.entries(t) as any;
	}

olegchursin / datetimeDefaultValue.ts

Created July 10, 2022 01:23

Get datetime default value for input field.

	export const getDatetimeDefaultValue = (timestamp: Date \| string): string => {
	let ts = new Date();
	if (timestamp) {
	ts = new Date(timestamp);
	}
	ts.setMinutes(ts.getMinutes() - ts.getTimezoneOffset());
	ts.setMilliseconds(null);
	ts.setSeconds(null);
	return ts.toISOString().slice(0, -1);
	};

olegchursin / useEffect.ts

Last active June 22, 2022 20:19

Use useEffect right

	// Fire useEffect only once on mount
	cosnt executedRef = useRef(false);

	useEffect(() => {
	if(executedRef.current) {
	return;
	}

	// doSomething();

olegchursin / hasSubstring.ts

Created June 17, 2022 14:44

Match multiple substrings RegEx

	function matcMultiple(subject: string, strings: string[]) {
	const regexMetachars = /[(){[*+?.\\^$\|]/g;

	for (let i = 0; i < strings.length; i++) {
	strings[i] = strings[i].replace(regexMetachars, '\\$&');
	}

	const regex = new RegExp('\\b(?:' + strings.join('\|') + ')\\b', 'gi');

	return subject.match(regex) \|\| [];

olegchursin / night-owl-slack-theme.txt

Created January 4, 2022 21:02

NightOwl Slack theme

#001627,#01151A,#1D3B53,#D5DDEA,#01121F,#D5DDEA,#77CEBF,#F0546F,#001627,#D5DDEA

olegchursin / datetime-format.ts

Last active December 16, 2021 16:55

Native Datetime Formatter

	// define formatter
	const locales: string \| string[] = 'en-US';
	const options: Intl.DateTimeFormatOptions = {
	year: 'numeric',
	month: 'short',
	day: 'numeric',
	hour: 'numeric',
	minute: '2-digit'
	};
	const formatter: Intl.DateTimeFormat = new Intl.DateTimeFormat(

olegchursin / oc.json

Created December 10, 2021 08:05

iTerm2 Profile

olegchursin / modern-css-reset.css

Created December 6, 2021 21:11

Modern CSS reset (Josh Comeau's)

	/*
	Josh Comeau's Modern CSS Reset
	https://www.joshwcomeau.com/css/custom-css-reset/
	*/
	, ::before, *::after {
	box-sizing: border-box;
	}
	* {
	margin: 0;
	}

olegchursin / .prettierrc

Created October 20, 2021 14:05