Recent questions tagged node.js

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I'm starting playing with node.js and as everybody, I want do a chat. My idea is run node.js with socket. ... /chat/public. What's the problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Getting error AWS Lambda : EROFS: read-only file system, open '/var/task/assets/docs.zip'

Can any one help me that why i got this issue I run this code locally it runs perfectly but at aws ... exited before completing request" } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Express middleware before response is carried out to client

I need to modify the response data a module sends to the client, as the module uses res.send i can't seem ... anything is sent to the client. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - ES6 Promises - Calling synchronous functions within promise chain

I'm currently experimenting with promises and have a really basic question! Within a promise chain, would it be ... to return promises also? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How can I decrypt a HMAC?

I can make an HMAC using the following: var encrypt = crypto.createHmac("SHA256", secret).update(string). ... ; ^ Error: DecipherInit error See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Cannot install latest nodejs using conda on Mac

When I run conda search -c conda-forge nodejs, I get: # Name Version Build Channel ... nodejs 14.2.0 ... Any suggestions on how to fix this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - node-express error : express deprecated res.send(status): Use res.sendStatus(status) instead

I am trying to send an integer via response.send() but I keep getting this error express deprecated res.send(status): ... send (idTest) }); }); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How to fix "FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory" error

I'm trying to deploy a reactjs application to heroku. While compiling assets, the build fails and produces this error: --- ... -space-size=6144 client/app/app.js" } I've researched...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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687 views

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node.js - GET http://localhost:3000/socket.io/socket.io.js 404 (Not Found)

I'm trying to stream data to the browser. I'm struggling, however, to connect it to the browser. Here's my html: ... :119:16) at node.js:901:3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - npm notice created a lockfile as package-lock.json. You should commit this file

I have been trying to load the skeleton of express with npm install express. It outputs the following line: ... and css engine automatically? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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369 views

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node.js - How to check in node if module exists and if exists to load?

I need to check if file/(custom)module js exists under some path. I tried like var m = require('/home/ ... exists and if exists to load ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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322 views

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node.js - Is there a way to Object.freeze() a JavaScript Date?

According to MDN Object.freeze() documentation: The Object.freeze() method freezes an object: that is, prevents new ... how to freeze a date? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

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node.js - Trying to understand how promisification works with BlueBird

I'm trying to wrap my head around promises using the Bluebird library for Node.js. Below is a simple example that ... , data); return data; }) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

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node.js - Communicating between NodeJS and C using node-ipc and unix sockets

I want to communicate between NodeJS and a C program using node-ipc, over a Unix socket, which according to ... I'm missing something crucial. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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node.js - NodeJS, promises, streams - processing large CSV files

I need to build a function for processing large CSV files for use in a bluebird.map() call. Given the ... potential problem with this approach? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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529 views

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node.js - Rate limiting for Google/Firebase cloud functions?

I am using Firebase to develop an app that uses Cloud Functions as a REST API internally. My question is, ... real-time database if necessary. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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468 views

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node.js - node http-server to respond with index.html to any request

I have installed http-server globally. I launch it from myDir on localhost port 8080. In myDir I have index ... this possible. Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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480 views

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node.js - Hard downsides of long polling?

For interactive web apps, things like Websockets are getting more popular. However, as the client, and proxy ... rather than long polling? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

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node.js - NodeJS Websocket how to reconnect when server restarts

In Node.js I'm using websockets/ws for a WebSocket connection. Below is the code for the client. Let's say the ... ws after x minutes here? }); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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643 views

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node.js - Deploy the backend and frontend on the same Heroku app/dyno

At the root of my project, I have a frontend and backend folder. Both folders contain a package.json that ... question. Thanks for the help! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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392 views

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node.js - In Express, what does app.router do exactly?

When I create a sample Express application using the express binary, the bootstrap code has these lines: ... ... purpuse of this middleware? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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510 views

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node.js - JavaScript Platform Independent Line separator

Does something similar to Java's System.getProperty("line.separator"); exist in JavaScript? Edit: I am ... JavaScript environment Node.js See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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545 views

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node.js - Declaring events in a TypeScript class which extends EventEmitter

I have a class extends EventEmitter that can emit event hello. How can I declare the on method with specific event name ... ) => void): this; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How to host nodeJS project to firebase?

I am using node, express and more other dependencies for the project. I wonder how to host this project on ... that I can make clarification. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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430 views

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node.js - NodeJS Express encodes the URL - how to decode

I'm using NodeJS with Express, and when I use foreign characters in the URL, they automatically ... // still '%u05D0%u05D5%u05D1%u05DE%u05D4' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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557 views

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node.js - Get request object in Passport strategy callback

So here is my configuration for passport-facebook strategy: passport.use(new FacebookStrategy({ clientID: ".....", ... way of doing it? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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337 views

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node.js - How can I support cors when using restify

I have a REST api created with the restify module and I want to allow cross-origin resource sharing. What is the best way to do it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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455 views

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node.js - How do I promisify the AWS JavaScript SDK?

I want to use the aws-sdk in JavaScript using promises. Instead of the default callback style: dynamodb.getItem( ... an error occurred }); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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