Initially we faced a challenge on storing voting rights for end users. We found there was no onchain solution and discovered for any hefty storage it would have to be carried out off chain. To resolve this issue we looked into ZKFS and Orbit DB. We faced build issues with ZKFS as its using an older version of snarkyjs where as the contracts are built on o1js. Our demo solution just stores balances per user session.

We also encountered the following issues within the contracts/interactions:
problem:

getActions: fromActionState not found.

const events = await zkApp.reducer.getActions({
  fromActionState: Field(0),
  endActionState: Field(100000000),
});

TypeError: x.isConstant is not a function

events = {
'add-merkle-leaf': Field,
'update-merkle-leaf': Field,
};

this.emitEvent('update-merkle-leaf', '234');

solution:

const txn = await Mina.transaction(senderAccount, () => {
  zkApp.increment(Field(0), Field(1), Field(0));
});
await txn.prove();
await txn.sign([senderKey]).send();

const events = await zkApp.reducer.getActions();
expect(events).toEqual('hello world');