That same information from the models that is included in OpenAPI is what can be used to **generate the client code**.

### Hey API { #hey-api }

Once we have a FastAPI app with the models, we can use Hey API to generate a TypeScript client. The fastest way to do that is via npx.

```sh
npx @hey-api/openapi-ts -i http://localhost:8000/openapi.json -o src/client
```

This will generate a TypeScript SDK in `./src/client`.

### Hey API { #hey-api }

Sobald wir eine FastAPI-App mit den Modellen haben, können wir Hey API verwenden, um einen TypeScript-Client zu generieren. Der schnellste Weg das zu tun, ist über npx.

```sh
npx @hey-api/openapi-ts -i http://localhost:8000/openapi.json -o src/client
```

E essas mesmas informações dos modelos que estão incluídas no OpenAPI são o que pode ser usado para **gerar o código do cliente**.

### Hey API { #hey-api }

Depois que tivermos uma aplicação FastAPI com os modelos, podemos usar o Hey API para gerar um cliente TypeScript. A forma mais rápida é via npx.

```sh
npx @hey-api/openapi-ts -i http://localhost:8000/openapi.json -o src/client
```

Isso gerará um SDK TypeScript em `./src/client`.

Та же информация из моделей, включённая в OpenAPI, может использоваться для **генерации клиентского кода**.

### Hey API { #hey-api }

Как только у нас есть приложение FastAPI с моделями, мы можем использовать Hey API для генерации TypeScript‑клиента. Самый быстрый способ сделать это — через npx.

```sh
npx @hey-api/openapi-ts -i http://localhost:8000/openapi.json -o src/client
```

Это сгенерирует TypeScript SDK в `./src/client`.

### Hey API { #hey-api }

Una vez que tenemos una app de FastAPI con los modelos, podemos usar Hey API para generar un cliente de TypeScript. La forma más rápida de hacerlo es con npx.

```sh
npx @hey-api/openapi-ts -i http://localhost:8000/openapi.json -o src/client
```

Esto generará un SDK de TypeScript en `./src/client`.

from typing import Optional


def say_hi(name: Optional[str] = None):
    if name is not None:
        print(f"Hey {name}!")
    else:

from typing import Union


def say_hi(name: Union[str, None] = None):
    if name is not None:
        print(f"Hey {name}!")
    else:

from typing import Optional


def say_hi(name: Optional[str]):

        module.say_hi("FastAPI")
        module.say_hi()

    assert mock_print.call_count == 2
    call_args = [arg.args for arg in mock_print.call_args_list]
    assert call_args == [
        ("Hey FastAPI!",),
        ("Hello World",),

    return mod


def test_say_hi(module: ModuleType):
    with patch("builtins.print") as mock_print:
        module.say_hi("FastAPI")

    mock_print.assert_called_once_with("Hey FastAPI!")

    with pytest.raises(
        TypeError,
        match=re.escape("say_hi() missing 1 required positional argument: 'name'"),
    ):