OpStep

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

const step = Effect.runSync(OpStep.from({
  pc: 10,
  op: 0x01, // ADD
  gas: 50000n,
  gasCost: 3n,
  depth: 1,
  stack: [1n, 2n]
}))

console.log(`PC: ${step.pc}, Op: 0x${step.op.toString(16)}, Gas: ${step.gas}`)

const result = await Effect.runPromiseExit(OpStep.from({ pc: -1, ... }))
if (result._tag === 'Failure') {
  console.error(result.cause) // OpStepError
}