PackedUserOperation

import * as PackedUserOperation from 'voltaire-effect/primitives/PackedUserOperation'
import { Effect } from 'effect'

// Create packed operation
const packed = await Effect.runPromise(PackedUserOperation.from({
  sender: '0x1234567890123456789012345678901234567890',
  nonce: 0n,
  initCode: '0x',
  callData: '0xb61d27f6...',
  accountGasLimits: new Uint8Array(32), // verificationGas[0:16] + callGas[16:32]
  preVerificationGas: 21000n,
  gasFees: new Uint8Array(32),          // priority[0:16] + maxFee[16:32]
  paymasterAndData: '0x',
  signature: '0x'
}))

// Hash for signing
const userOpHash = await Effect.runPromise(
  PackedUserOperation.hash(packed, '0x0000000071727De22E5E9d8BAf0edAc6f37da032', 1n)
)

// Unpack to full UserOperation
const userOp = await Effect.runPromise(PackedUserOperation.unpack(packed))
// userOp.verificationGasLimit, userOp.callGasLimit, etc.