<VersionWarning version="0.1" />

# Migration Guide

## 0.1.0

:::warning
This migration guide is assuming you migrating to ^0.1.0, but you are still looking to use EntryPoint version v0.6.
:::

### Replaced transport with bundlerTransport inside `createSmartAccountClient`

```ts
const smartAccountClient = createSmartAccountClient({
    transport: http(bundlerUrl), // [!code --]
    bundlerTransport: http(bundlerUrl), // [!code ++]
    // ...
})
```

### Replaced sponsorUserOperation middleware API

Instead of accepting just a `sponsorUserOperation` middleware, `createSmartAccountClient` now accepts a `middleware` function that can specify a `sponsorUserOperation` function internally, as well as a `gasPrice` function.

```ts
const smartAccountClient = createSmartAccountClient({
    sponsorUserOperation: paymasterClient.sponsorUserOperation, // [!code --]
    middleware: { // [!code ++]
        gasPrice: async () => { // [!code ++]
            return (await bundlerClient.getUserOperationGasPrice()).fast // [!code ++]
        }, // [!code ++]
        sponsorUserOperation: paymasterClient.sponsorUserOperation, // [!code ++]
    }, // [!code ++]
    // ...
})
```

In addition, a function can also be passed to `middleware` directly.

```ts
const smartAccountClient = createSmartAccountClient({
    middleware: async ({ userOperation, entryPoint }) => {
        // ...
        return modifiedUserOperation
    }
    // ...
})
```

### `sponsorUserOperation` in `pimlicoPaymasterActions` and `stackupPaymasterActions` now returns just the `paymasterAndData` and estimated gas limits instead of the whole user operation

```ts
const sponsorResult = await paymasterClient.sponsorUserOperation({ 
    userOperation: userOperation, 
    entryPoint: ENTRYPOINT_ADDRESS_V06 
})

/**
 * {
    "paymasterAndData": "0xe3dc822D77f8cA7ac74c30B0dfFEA9FcDCAAA321000000000000000000000000000000000000000000000000000000006514ac7d000000000000000000000000000000000000000000000000000000000000000071eee8c38559ef6872351c16a312cefbc545344a3f7cc1b910d059a0d5c613012763e6b1ce31080a975ddcba12817305a62a322e3ec8f106bd2181b0fd1391cf1c",
    "preVerificationGas": 61230n,
    "verificationGasLimit": 93823n,
    "callGasLimit": 134849n
   }
 */
```

### Modified `providerToSmartAccountSigner` API to use keyword arguments

```ts
import { providerToSmartAccountSigner } from "permissionless"

const provider = // ...
const signerAddress = // ...

const smartAccountSigner = await providerToSmartAccountSigner(provider, signerAddress) // [!code --]
const smartAccountSigner = await providerToSmartAccountSigner(provider, { signerAddress: signerAddress }) // [!code ++]
```

### All clients must now take in an `entryPoint` address

```ts
const bundlerClient = createBundlerClient({
    transport: http(bundlerUrl),
    entryPoint: ENTRYPOINT_ADDRESS_V06, // [!code ++]
})

const smartAccountClient = createSmartAccountClient({
    account,
    entryPoint: ENTRYPOINT_ADDRESS_V06, // [!code ++]
    chain: sepolia,
    bundlerTransport: http(bundlerUrl),
})

const bundlerClient = createPimlicoBundlerClient({
    transport: http(bundlerUrl),
    entryPoint: ENTRYPOINT_ADDRESS_V06, // [!code ++]
})

export const paymasterClient = createPimlicoPaymasterClient({
    transport: http(paymasterUrl),
    entryPoint: ENTRYPOINT_ADDRESS_V06, // [!code ++]
})

export const paymasterClient = createStackupPaymasterClient({
    transport: http(paymasterUrl),
    entryPoint: ENTRYPOINT_ADDRESS_V06, // [!code ++]
})

const bundlerClient = createClient({
    transport: http(bundlerUrl),
    chain: sepolia,
})
.extend(bundlerActions) // [!code --]
.extend(bundlerActions(ENTRYPOINT_ADDRESS_V06)) // [!code ++]
```

### `entryPoint` is no longer passed in to bundler, paymaster, and smart account actions

```ts
const userOperationHash = await bundlerClient.sendUserOperation({
    userOperation: sponsoredUserOperation,
    entryPoint: ENTRYPOINT_ADDRESS_V07, // [!code --]
})
```