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# Authorization.fromTupleList

:::info
`Authorization.fromTupleList` is a re-export of ox's [`Authorization.fromTupleList`](https://oxlib.sh/api/Authorization/fromTupleList). Refer to the ox documentation for the full reference.
:::

Converts an [`Authorization.TupleList`](/docs/utilities/authorization/types#tuplelist) to an [`Authorization.List`](/docs/utilities/authorization/types#list).

## Imports

```ts
import { Authorization } from 'viem/utils'
```

## Examples

```ts twoslash
// @noErrors
import { Authorization } from 'viem/utils'

const authorizationList = Authorization.fromTupleList([
  [
    '0x1',
    '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
    '0x3'
  ],
  [
    '0x3',
    '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
    '0x14'
  ]
])
// @log: [
// @log:   {
// @log:     address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:     chainId: 1,
// @log:     nonce: 3n,
// @log:   },
// @log:   {
// @log:     address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:     chainId: 3,
// @log:     nonce: 20n,
// @log:   },
// @log: ]
```

It is also possible to append a Signature tuple to the end of an Authorization tuple.

```ts twoslash
// @noErrors
import { Authorization } from 'viem/utils'

const authorizationList = Authorization.fromTupleList([
  [
    '0x1',
    '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
    '0x3',
    '0x1',
    '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
    '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064'
  ],
  [
    '0x3',
    '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
    '0x14',
    '0x1',
    '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
    '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064'
  ]
])
// @log: [
// @log:   {
// @log:     address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:     chainId: 1,
// @log:     nonce: 3n,
// @log:     r: '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
// @log:     s: '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064',
// @log:     yParity: 0,
// @log:   },
// @log:   {
// @log:     address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:     chainId: 3,
// @log:     nonce: 20n,
// @log:     r: '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
// @log:     s: '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064',
// @log:     yParity: 0,
// @log:   },
// @log: ]
```

## Definition

```ts
function fromTupleList<tupleList>(
  tupleList: tupleList,
): fromTupleList.ReturnType<tupleList>
```

## Parameters

### tupleList

* **Type:** `tupleList`

The [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) Authorization tuple list.

## Return Type

An [`Authorization.List`](/docs/utilities/authorization/types#list).

`fromTupleList.ReturnType<tupleList>`