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import Numesis from "https://deno.land/x/numesis/mod.ts";
/** * @type {string} DEFAULT_CHARSET The default charset for USID */export const DEFAULT_CHARSET = Numesis.DEFAULT;
/** * @param min The minimum number * @param max The maximum number * @returns A number between min and max */export const randInt = (min: number, max: number) => parseInt((Math.random() * (max - min + 1) + min) + "");
/** * @param len The length of the string * @param charset The charset for the string * @returns A random string with len length */export const rand = (len: number = 3, charset: string | null = null): string => {	charset = charset || DEFAULT_CHARSET;	const n = new Numesis(charset);	const c = n.charset.length;	const min = c ** (len - 1) - (len > 1 ? 0 : 1)	const max = c ** len - 1	return n.e(randInt(min, max))}
/** * @param out_len The length of the output string * @param real_len The length of the initial int value to be encoded * @param charset The charset for the string * @returns A random string with out_len length */export const uid = (out_len: number = 24, real_len: number = 18, charset: string = DEFAULT_CHARSET): string => {	charset = charset || DEFAULT_CHARSET;	const n = new Numesis(charset);	let y = performance.now().toString()	y = (y.length < real_len ? (y + "0".repeat(real_len - y.length - 1) + "1") : y).replace(".", "0")	let r = n.e(y)	return r.length < out_len ? r + rand(out_len - r.length) : r;}
/** * Options for createIndex function */export type CreateIndexOptions = {	/**	 * @type {string} charset The charset for the string	 */	charset: string,
	/**	 * @type {Function} a callback function that will be called to get the latest index	 */	get: Function,
	/**	 * @type {Function} a callback function that will be called to set the latest index	 */	set: Function,
	/**	 * @type {number} The min length of the output string	 */	min?: number}
/** *  * @param opts The options for the USID * @returns A callback function that generates an index based ID */export const createIndex = (opts: CreateIndexOptions): Function => {
	/**	 * @return encoded latest index	 */	return () => {		let { get, set, charset, min } = opts;		min = min || 0;		charset = charset || DEFAULT_CHARSET;		const n = new Numesis(opts.charset);		const lastIndex = get();		const index = lastIndex + 1;		set(index);		return n.t(min, index)	}}
export default uid