Function simulateValidation

test/UserOp.ts:472–501

(
  userOp: PackedUserOperation,
  entryPointAddress: string,
  txOverrides?: any)

 * @param txOverrides
 */
export async function simulateValidation (
  userOp: PackedUserOperation,
  entryPointAddress: string,
  txOverrides?: any): Promise<IEntryPointSimulations.ValidationResultStructOutput> {
  const entryPointSimulations = EntryPointSimulations__factory.createInterface()
  const data = entryPointSimulations.encodeFunctionData('simulateValidation', [userOp])
  const tx: TransactionRequest = {
    to: entryPointAddress,
    data,
    ...txOverrides
  }
  const stateOverride = {
    [entryPointAddress]: {
      code: EntryPointSimulationsJson.deployedBytecode
    }
  }
  try {
    const simulationResult = await ethers.provider.send('eth_call', [tx, 'latest', stateOverride])
    const res = entryPointSimulations.decodeFunctionResult('simulateValidation', simulationResult)
    // note: here collapsing the returned "tuple of one" into a single value - will break for returning actual tuples
    return res[0]
  } catch (error: any) {
    const revertData = error?.data
    if (revertData != null) {
      // note: this line throws the revert reason instead of returning it
      entryPointSimulations.decodeFunctionResult('simulateValidation', revertData)
    }
    throw error
  }
}

// TODO: this code is very much duplicated but "encodeFunctionData" is based on 20 overloads
//  TypeScript is not able to resolve overloads with variables: https://github.com/microsoft/TypeScript/issues/14107