Precalculate TokenIds?

[genecyber]

I really would like to use these new features, but have one significant issue. It appears part of the magic is with sequential toeknIds. My application associates a tokenID with an off chain asset. Typically I do this by generating my tokenID based off a few bits of information known before mint.

If sequential only, my prior method of associating a tokenID with an item is fraught with race conditions.

1: is it possible to mint out of order?
2: if not, is there a way to provide info at mint time to associate a tokenID with some key that I can use to associate with a specific off chain “thing”?

[nidhhoggr]

1. minting out of order is not possible
2. Yes, you can make an internal call to setExtraDataAt which stores an uint24 at the specified mintIndex

   ERC721A/contracts/ERC721A.sol

   Line 1040 in c667922

   function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {