# TxEnvelopeEip2930.serialize

Serializes a [`TxEnvelopeEip2930.TxEnvelopeEip2930`](/api/TxEnvelopeEip2930/types#txenvelopeeip2930).

## Imports

:::code-group
```ts [Named]
import { TxEnvelopeEip2930 } from 'ox'
```

```ts [Entrypoint]
import * as TxEnvelopeEip2930 from 'ox/TxEnvelopeEip2930'
```
:::

## Examples

```ts twoslash
import { TxEnvelopeEip2930, Value } from 'ox'

const envelope = TxEnvelopeEip2930.from({
  chainId: 1,
  gasPrice: Value.fromGwei('10'),
  to: '0x0000000000000000000000000000000000000000',
  value: Value.fromEther('1')
})

const serialized = TxEnvelopeEip2930.serialize(envelope) // [!code focus]
```

### Attaching Signatures

It is possible to attach a `signature` to the serialized Transaction Envelope.

```ts twoslash
import { Secp256k1, TxEnvelopeEip2930, Value } from 'ox'

const envelope = TxEnvelopeEip2930.from({
  chainId: 1,
  gasPrice: Value.fromGwei('10'),
  to: '0x0000000000000000000000000000000000000000',
  value: Value.fromEther('1')
})

const signature = Secp256k1.sign({
  payload: TxEnvelopeEip2930.getSignPayload(envelope),
  privateKey: '0x...'
})

const serialized = TxEnvelopeEip2930.serialize(envelope, {
  // [!code focus]
  signature // [!code focus]
}) // [!code focus]

// ... send `serialized` transaction to JSON-RPC `eth_sendRawTransaction`
```

## Definition

```ts
function serialize(
  envelope: PartialBy<TxEnvelopeEip2930, 'type'>,
  options?: serialize.Options,
): Serialized
```

**Source:** [src/core/TxEnvelopeEip2930.ts](https://github.com/wevm/ox/blob/main/src/core/TxEnvelopeEip2930.ts#L613)

## Parameters

### envelope

* **Type:** `PartialBy<TxEnvelopeEip2930, 'type'>`

The Transaction Envelope to serialize.

### options

* **Type:** `serialize.Options`
* **Optional**

Options.

#### options.signature

* **Type:** `{ r: 0x${string}; s: 0x${string}; yParity: number; }`
* **Optional**

Signature to append to the serialized Transaction Envelope.

## Return Type

The serialized Transaction Envelope.

[`TxEnvelopeEip2930.Serialized`](/api/TxEnvelopeEip2930/types#txenvelopeeip2930serialized)