New generates secure URL-friendly unique ID. Accepts optional parameter - length of the ID to be generated (21 by default).

Generate is a low-level function to change alphabet and ID size.

Must is the same as New but panics on error.

MustGenerate is the same as Generate but panics on error.

getMask generates bit mask used to obtain bits from the random bytes that are used to get index of random character from the alphabet. Example: if the

Benchmark nanoid generator