Javascript 未捕获（承诺中）类型错误：spawn不是函数
我有点困在这里了。我正在使用我的action creator中的redux thunk提交一个异步请求，如下所示：Javascript 未捕获（承诺中）类型错误：spawn不是函数,javascript,reactjs,asynchronous,redux,react-redux,Javascript,Reactjs,Asynchronous,Redux,React Redux,我有点困在这里了。我正在使用我的action creator中的redux thunk提交一个异步请求，如下所示： export const downloadFromYoutube = (download) => { console.log("Hello"); return dispatch => { var YoutubeMp3Downloader = require('youtube-mp3-downloader'); var YD = ne
export const downloadFromYoutube = (download) => {
console.log("Hello");
return dispatch => {
var YoutubeMp3Downloader = require('youtube-mp3-downloader');
var YD = new YoutubeMp3Downloader({
"ffmpegPath": "/usr/local/Cellar/ffmpeg/3.2.2/bin/ffmpeg", // Where is the FFmpeg binary located?
"outputPath": "/Users/dominik/Coding/youtube-downloader-papa/downloads", // Where should the downloaded and encoded files be stored?
"youtubeVideoQuality": "highest", // What video quality should be used?
"queueParallelism": 2, // How many parallel downloads/encodes should be started?
"progressTimeout": 2000 // How long should be the interval of the progress reports
});
console.log("Hello");
YD.on("finished", data => dispatch({ type: "FINISHED", payload: data }));
YD.on("error", error => dispatch({ type: "ERROR", payload: error }));
YD.on("progress", progress => dispatch({ type: "PROGRESS", payload: progress }));
// dispatch a "starting" action
// dispatch({ type: "STARTING" });
// start the download
YD.download("UDzGLMLhy80");
}
};
Spawn是nodejs的一个构造。React as框架没有该方法。该库将用于服务器端（nodejs）。您可以公开可以通过react触发的http api。http api随后可以触发nodejs服务器中的库。摘自文章： 使用Socket.IO 服务器端代码
var io = require('socket.io').listen(80); // initiate socket.io server
io.sockets.on('connection', function (socket) {
socket.emit('news', { hello: 'world' }); // Send data to client
// wait for the event raised by the client
socket.on('my other event', function (data) {
console.log(data);
});
});
<script src="/socket.io/socket.io.js"></script>
<script>
var socket = io.connect('http://localhost'); // connec to server
socket.on('news', function (data) { // listen to news event raised by the server
console.log(data);
socket.emit('my other event', { my: 'data' }); // raise an event on the server
});
</script>
var socket=io.connect（'http://localhost'); // 连接到服务器
on（'news'，函数（数据）{//侦听服务器引发的新闻事件
控制台日志（数据）；
emit（'my other event'，{my:'data'}）；//在服务器上引发事件
});