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## `projectRoot`

### Signature

```solidity
function projectRoot() external returns (string memory path);
```

### Description

Returns the root directory of the current Foundry project.

### Returns

| Type     | Description                                |
|----------|--------------------------------------------|
| `string` | The absolute path to the project root directory |

### Examples

```solidity [test/ProjectRoot.t.sol]
string memory root = vm.projectRoot();
string memory path = string.concat(root, "/src/Contract.sol");
```

### Related Cheatcodes

* [`ffi`](/reference/cheatcodes/ffi) - Execute commands relative to project root
* [`readFile`](/reference/cheatcodes/fs) - Read files using paths relative to project root