For **TypeScript clients**, <a href="https://heyapi.dev/" class="external-link" target="_blank">Hey API</a> is a purpose-built solution, providing an optimized experience for the TypeScript ecosystem.

In diesem Leitfaden erfahren Sie, wie Sie ein **TypeScript-SDK** für Ihr FastAPI-Backend generieren.

## Open Source SDK-Generatoren { #open-source-sdk-generators }

Eine vielseitige Möglichkeit ist der <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>, der **viele Programmiersprachen** unterstützt und SDKs aus Ihrer OpenAPI-Spezifikation generieren kann.

    assert state["/async"] == "asyncgen completed"


def test_sync_state():
    assert state["/sync"] == "generator not started"
    response = client.get("/sync")
    assert response.status_code == 200, response.text
    assert response.json() == "generator started"
    assert state["/sync"] == "generator completed"


def test_async_raise_other():
    assert state["/async_raise"] == "asyncgen raise not started"

  public void testStringArray() {
    FreshValueGenerator generator = new FreshValueGenerator();
    String[] a1 = generator.generateFresh(String[].class);
    String[] a2 = generator.generateFresh(String[].class);
    assertFalse(a1[0].equals(a2[0]));
  }

  public void testPrimitiveArray() {
    FreshValueGenerator generator = new FreshValueGenerator();
    int[] a1 = generator.generateFresh(int[].class);

Una opción versátil es el <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>, que soporta **muchos lenguajes de programación** y puede generar SDKs a partir de tu especificación OpenAPI.

Neste guia, você aprenderá como gerar um **SDK em TypeScript** para o seu backend FastAPI.

## Geradores de SDK de código aberto { #open-source-sdk-generators }

Uma opção versátil é o <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>, que suporta **muitas linguagens de programação** e pode gerar SDKs a partir da sua especificação OpenAPI.

from collections.abc import Generator
from contextlib import contextmanager
from typing import Annotated, Any

import pytest
from fastapi import Depends, FastAPI
from fastapi.responses import StreamingResponse
from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.data = ["foo", "bar", "baz"]
        self.open = True

    def __iter__(self) -> Generator[str, None, None]:

1. This is the generator function. It's a "generator function" because it contains `yield` statements inside.
2. By using a `with` block, we make sure that the file-like object is closed after the generator function is done. So, after it finishes sending the response.

В этом руководстве вы узнаете, как сгенерировать **TypeScript SDK** для вашего бэкенда на FastAPI.

## Генераторы SDK с открытым исходным кодом { #open-source-sdk-generators }

Гибкий вариант — <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>, который поддерживает **многие языки программирования** и умеет генерировать SDK из вашей спецификации OpenAPI.

from collections.abc import AsyncGenerator, Generator

import pytest
from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


class CallableDependency:
    def __call__(self, value: str) -> str:
        return value


class CallableGenDependency:
    def __call__(self, value: str) -> Generator[str, None, None]:
        yield value


class AsyncCallableDependency: