node.js

问题 I'm having an argument with a co-worker about done() in Jest tests. He's orders of magnitude more experienced with JavaScript than I am, and I came in after async / await was generally accepted, plus came from a .NET environment, so I was used to it. I write my tests like this: it("should return 200 OK for POST method", async () => { await request(app).post("SOMEENDPOINT") .attach("file", "file") .expect(200); }); He's more used to promises so will write his tests like this: it("should return

问题 I just started to use firebase Functions and I am new to the node.js environment, can somebody tell how to iterate through a child node and get the child values. 回答1: see this example: const parentRef = admin.database().ref("path"); return parentRef.once('value').then(snapshot => { const updates = {}; snapshot.forEach(function(child) { updates[child.key] = null; }); return parentRef.update(updates); }); 回答2: Have you looked through the Cloud Functions for Firebase Samples? They contain many

问题 I just started to use firebase Functions and I am new to the node.js environment, can somebody tell how to iterate through a child node and get the child values. 回答1: see this example: const parentRef = admin.database().ref("path"); return parentRef.once('value').then(snapshot => { const updates = {}; snapshot.forEach(function(child) { updates[child.key] = null; }); return parentRef.update(updates); }); 回答2: Have you looked through the Cloud Functions for Firebase Samples? They contain many

问题 For my project I record user audio using MediaRecorder and it almost works fine. My problem rises when I wish to display a waveform of the user recording using Wavesurfer.js, which doesn't load my recording. Playing the recording with an Audio element works fine, though. After trying different sources, it seams that it is because the final .webm file doesn't have much metadata, not even a duration or bitrate (even though I set it in the MediaRecorder options). Here is the output from ffprobe

问题 For my project I record user audio using MediaRecorder and it almost works fine. My problem rises when I wish to display a waveform of the user recording using Wavesurfer.js, which doesn't load my recording. Playing the recording with an Audio element works fine, though. After trying different sources, it seams that it is because the final .webm file doesn't have much metadata, not even a duration or bitrate (even though I set it in the MediaRecorder options). Here is the output from ffprobe

问题 Having gone through multiple posts on stack I still couldn't find a right answer. Checked the documentation on CORS extension as well. I have the following server code up and running: var WebSocketServer = require("ws").Server var http = require("http") var express = require('express') var cors = require('cors') var app = express(); app.use(cors()); var port = process.env.PORT || 9000 var server = http.createServer(app) server.listen(port) var count = 0; var clients = {}; var rooms = {}; var

问题 Having gone through multiple posts on stack I still couldn't find a right answer. Checked the documentation on CORS extension as well. I have the following server code up and running: var WebSocketServer = require("ws").Server var http = require("http") var express = require('express') var cors = require('cors') var app = express(); app.use(cors()); var port = process.env.PORT || 9000 var server = http.createServer(app) server.listen(port) var count = 0; var clients = {}; var rooms = {}; var

问题 I'm a total node.js newbie who's just started tinkering with it. I have a piece of code that executes a function that processes strings on all cpu cores, and I wish to determine which worker completed the function first by it's id, and after that kill every worker (or just exit node). Here's the simplified code of my program: var cluster = require('cluster'), cpus = require("os").cpus().length, // 4 cores myArray = ["foo","bar","baz","qux"]; // 1 string per core if (cluster.isMaster) { for

问题 I'm a total node.js newbie who's just started tinkering with it. I have a piece of code that executes a function that processes strings on all cpu cores, and I wish to determine which worker completed the function first by it's id, and after that kill every worker (or just exit node). Here's the simplified code of my program: var cluster = require('cluster'), cpus = require("os").cpus().length, // 4 cores myArray = ["foo","bar","baz","qux"]; // 1 string per core if (cluster.isMaster) { for

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 months ago . Improve this question I am trying to install NodeJS on the new Apple Silicon MacBook Pro, but I wasn't able to find a installer for ARM Macs. The standard installation will run in Intel emulation mode, but I saw they already have an ARM Linux version which I assume is not suitable for