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## `ensNamehash`

### Signature

```solidity
function ensNamehash(string calldata name) external pure returns (bytes32);
```

### Description

Returns the [ENS namehash](https://docs.ens.domains/resolution/names#namehash) of the provided name, following the recursive algorithm from [EIP-137](https://eips.ethereum.org/EIPS/eip-137): `namehash("") = 0x0` and `namehash(label.rest) = keccak256(namehash(rest), keccak256(label))`.

Use it to compute ENS node identifiers in tests that interact with ENS registries and resolvers.

### Parameters

| Parameter | Type     | Description               |
|-----------|----------|---------------------------|
| `name`    | `string` | The ENS name to hash      |

### Returns

| Type      | Description                |
|-----------|----------------------------|
| `bytes32` | The namehash of the name   |

### Examples

```solidity [test/EnsNamehash.t.sol]
function testEnsNamehash() public view {
    assertEq(vm.ensNamehash(""), bytes32(0));
    assertEq(
        vm.ensNamehash("eth"),
        0x93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae
    );
}
```

### Related Cheatcodes

* [`toString`](/reference/cheatcodes/to-string) - Convert values to strings
* [`parseAddress`](/reference/cheatcodes/parse-address) - Parse a string into an address