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"

    /** Length for directory name generation. */
    protected int directoryNameLength = 5;

    /** List of generator names. */
    protected List<String> generatorList;

    /** Map of file paths for thumbnail generation. */
    protected Map<String, String> filePathMap = new HashMap<>();

    /** The name of this thumbnail generator. */
    protected String name;

    /** Maximum number of redirects to follow. */

        return null;
    }

    /**
     * Adds a thumbnail generator to the manager.
     *
     * @param generator the thumbnail generator to add
     */
    public void add(final ThumbnailGenerator generator) {
        if (generator.isAvailable()) {
            if (logger.isDebugEnabled()) {
                logger.debug("{} is available.", generator.getName());
            }
            generatorList.add(generator);

     * @param outputFile the file where the generated thumbnail will be saved
     * @return true if the thumbnail was successfully generated, false otherwise
     */
    @Override
    public boolean generate(final String thumbnailId, final File outputFile) {
        if (logger.isDebugEnabled()) {
            logger.debug("Generate Thumbnail: {}", thumbnailId);
        }

        if (outputFile.exists()) {

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.

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.

        }
    }

    /**
     * Destroys the command generator and cleanup resources.
     */
    @Override
    public void destroy() {
        destoryTimer.cancel();
        destoryTimer = null;
    }

    /**
     * Generates a thumbnail for the given ID and saves it to the output file.
     * @param thumbnailId The ID of the thumbnail to generate.
     * @param outputFile The file where the thumbnail will be saved.