我想获取某个地方的当前天气状况。为了实现这一点，我使用了两个API。第一个是Mapbox，我使用它将地名地理编码为地理坐标，第二个是Accuweather API。我还使用Axios模块向API发出HTTP请求。
为了避免回调地狱和多层代码，并使它更容易阅读和维护，我做了3个函数：
1.cityToCoordinates*以获取地点/城市名称的纬度和经度。
1.***coordinatesToPlaceID使用Accuweather获取坐标的地点ID**
1.*placeIDToCurrentForecast*获取当前天气的地点
由于axios请求使用Promises，所以我将这三个函数都设置为异步。
问题出在placeIDToCurrentForecast函数中，在调用coordinatesToPlaceID之后，then函数中的回调响应始终是undefined，尽管请求已成功发出并且我打印了响应。
下面是脚本：

const axios = require("axios").default || require("axios");

const cityToCoordinates = async (cityName) => {
    const geoCodeBaseURL = " https://api.mapbox.com/geocoding/v5/mapbox.places/";
    const mapbowAcessToken = "MAPBOX_TOKEN";
    const limit = 1;
    const cityNameUrlEncoded = encodeURIComponent(cityName);

    return await axios
        .get(
            `${geoCodeBaseURL}${cityNameUrlEncoded}.json?access_token=${mapbowAcessToken}&limit=${limit}`
        )
        .then((response) => {
            const responseObject = response.data;

            if (responseObject.features.length === 0) {
                console.log("Sorry no such place exists");
                return;
            } else {
                const location = responseObject.features["0"].center;
                const longitude = location[0];
                const latitude = location[1];

                return {
                    latitude: latitude,
                    longitude: longitude,
                };
            }
        })
        .catch((error) => {
            console.log("An error has occured in city to coordinates");
            // console.log(error);
        });
};

const coordinatesToPlaceID = async (cityName) => {
    const coordinatesToPlaceApiURL = "http://dataservice.accuweather.com/locations/v1/cities/geoposition/search";
    const accuWeatherApiKey = "ACCUWEATHER_API_KEY";

    await cityToCoordinates(cityName).then(async (response) => {
        const query = `${response.latitude},${response.longitude}`;
        const queryUrlEncoded = encodeURIComponent(query);

        return await axios
            .get(
                `${coordinatesToPlaceApiURL}?q=${queryUrlEncoded}&apikey=${accuWeatherApiKey}`
            )
            .then((response) => {
                console.log(response.data.Key);
                return response.data.Key;
            })
            .catch((error) => {
                console.log("An error has occured in coordinates to place ID");
                // console.log(error);
            });
    });
};

const placeIDToCurrentForecast = async (cityName) => {
    const placeIdToCurrentWeather = "http://dataservice.accuweather.com/currentconditions/v1/";
    const accuWeatherApiKey = "ACCUWEATHER_API_KEY";

    await coordinatesToPlaceID(cityName).then(async (response) => {
        console.log(response); // Always undefined!!!

        if (response) {
            const placeId = response;

            await axios
                .get(`${placeIdToCurrentWeather}${placeId}?apikey=${accuWeatherApiKey}`)
                .then((response) => {
                    console.log(
                        "The current weathr in " +
                        cityName +
                        " is " +
                        response.data[0].Temperature.Metric.Value +
                        "° C"
                    );
                })
                .catch((error) => {
                    console.log("An error has occured in place ID to current forecast");
                    // console.log(error);
                });
        } else {
            console.log("There is no response");
        }
    });
};

placeIDToCurrentForecast("California");

输出：

332131
undefined
There is no response

为什么响应未定义，我如何改进代码？