What is the recommended approach to change input shapes before validation (or should I do it before validation)

[jadejr]

I have schemas like this:

const PlayerSchema = z.object({ 
  color: z.enum(...);
});
const TeamSchema = z.object({
  players: z.array(PlayerSchema)
});
const GameSchema = z.object({
  // other fields
 team: z.array(TeamSchema);
});

I'd like to add a min size to the array of at least 2, but there's a wrinkle. The form data is flat list of one team. I'd like to use the color to group them into teams and only then validate GameSchema. Then i can add min size 2 to teams.

Or am i going about this wrong?