@developers-joyride/shortify/src/utils/id-generator.ts

High performance URL shortener library with multi-database support (MongoDB, SQLite, PostgreSQL, MySQL)

/**
 * Simple URL-safe ID generator that can be used in place of nanoid
 * to avoid ESM/CJS compatibility issues.
 */
export function generateId(length: number = 8): string {
  const characters =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
  let result = "";
  const charactersLength = characters.length;

  for (let i = 0; i < length; i++) {
    result += characters.charAt(Math.floor(Math.random() * charactersLength));
  }

  return result;
}

/**
 * Generate a customized ID with specific character set
 */
export function customGenerator(alphabet: string, size: number = 8) {
  return (): string => {
    let id = "";
    const length = alphabet.length;

    for (let i = 0; i < size; i++) {
      id += alphabet.charAt(Math.floor(Math.random() * length));
    }

    return id;
  };
}