import crypto from "crypto";

export abstract class StringHelper {
  static random(len: number, charSet?: string): string {
    // charSet = charSet || "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    // var randomString = "";
    // for (var i = 0; i < len; i++) {
    //   var randomPoz = Math.floor(Math.random() * charSet.length);
    //   randomString += charSet.substring(randomPoz, randomPoz + 1);
    // }
    // return randomString;
    return crypto
      .randomBytes(len)
      .toString("base64")
      .replace(/[^a-zA-Z0-9]/g, "");
  }
}