Max Katz maxktz

maxktz / env.ts

Last active March 20, 2025 01:59

Env `pnpm install dotenv zod`

maxktz / global-singleton.ts

Created February 7, 2025 03:13

Global singleton utility function for nextjs. to avoid re-initialization hot reloads

	export function globalSingleton<T>(key: string, createInstance: () => T): T {
	const globalStore = globalThis as unknown as Record<string, T \| undefined>;
	if (!globalStore[key]) {
	globalStore[key] = createInstance();
	}
	return globalStore[key];
	}

maxktz / map-telegram-proxy-string.ts

Created February 4, 2025 00:06

Map Proxy String to GramJS ProxyInterface

	import type { ProxyInterface } from "telegram/network/connection/TCPMTProxy";

	export function mapTelegramProxyString(
	proxy?: string
	): ProxyInterface \| undefined {
	const { protocol, hostname, port, username, password } = proxy
	? new URL(proxy!)
	: {};

	if (proxy) {

maxktz / ranged_number.ts

Last active September 17, 2024 13:30

RangedNumber, utility class used to store range of numbers and get random, or mid value easily

	/**
	* @example
	* // Example usage:
	* let rn = RangedNumber.fromString("1");
	* console.log(rn); // RangedNumber { min: 1, mid: 1, max: 1 }
	*
	* let rn = RangedNumber.fromString("1-2");
	* console.log(rn); // RangedNumber { min: 1, mid: 1.5, max: 2 }
	*
	* let randomNumber = rn.get();

maxktz / aes_password_string_encryption.ts

Last active September 12, 2024 09:04

JS TS module to encrypt and decrypt string with password, using AES, 256bit salt, and 128 bit init vector.

	import crypto from "crypto"; // npm i crypto

	/** Helper function to generate a random salt */
	export function generateSalt(length: number = 32): string {
	return crypto.randomBytes(length).toString("hex");
	}

	/** Derive a key from a password and salt */
	export function deriveKey(password: string, salt: string): Buffer {
	return crypto.pbkdf2Sync(password, salt, 100000, 32, "sha256");

maxktz / gist:1be6d7dcc09560266ea44aba14d5d1a8

Created September 12, 2024 08:57

JS/TS encrypt string with password using AES and decrypt methods

	import crypto from "crypto";

	/** Helper function to generate a random salt */
	export function generateSalt(length: number = 32): string {
	return crypto.randomBytes(length).toString("hex");
	}

	/** Derive a key from a password and salt */
	export function deriveKey(password: string, salt: string): Buffer {
	return crypto.pbkdf2Sync(password, salt, 100000, 32, "sha256");