In npm 6.x and 7.x you can use npm i –package-lock-only According to the docs of npm v6, npm v7 or latest version: The –package-lock-only argument will only update the package-lock.json, instead of checking node_modules and downloading dependencies.
The error message is saying that there’s already a record with null as the email. In other words, you already have a user without an email address. The relevant documentation for this: If a document does not have a value for the indexed field in a unique index, the index will store a null value … Read more
The find function in mongoose is a full query to mongoDB. This means you can use the handy mongoDB $in clause, which works just like the SQL version of the same. model.find({ ‘_id’: { $in: [ mongoose.Types.ObjectId(‘4ed3ede8844f0f351100000c’), mongoose.Types.ObjectId(‘4ed3f117a844e0471100000d’), mongoose.Types.ObjectId(‘4ed3f18132f50c491100000e’) ]} }, function(err, docs){ console.log(docs); }); This method will work well even for arrays containing tens … Read more
Try adding the following middleware to your NodeJS/Express app (I have added some comments for your convenience): // Add headers before the routes are defined app.use(function (req, res, next) { // Website you wish to allow to connect res.setHeader(‘Access-Control-Allow-Origin’, ‘http://localhost:8888’); // Request methods you wish to allow res.setHeader(‘Access-Control-Allow-Methods’, ‘GET, POST, OPTIONS, PUT, PATCH, DELETE’); // … Read more
The docs describe another way to do this which may be the preferred method: When a file is run directly from Node, require.main is set to its module. To take advantage of this, check if this module is the main module and, if so, call your main code: function myMain() { // main code } … Read more
Usually, you don’t want to expose any of your internal paths for how your server is structured to the outside world. What you can is make a /scripts static route in your server that fetches its files from whatever directory they happen to reside in. So, if your files are in “./node_modules/bootstrap/dist/”. Then, the script … Read more
Doing a symlink solves the issue: ln -s /usr/bin/nodejs /usr/bin/node (My thanks and +1 vote to bodokaiser’s answer).
There are a few ways of passing data around to different routes. The most correct answer is, of course, query strings. You’ll need to ensure that the values are properly encodeURIComponent and decodeURIComponent. app.get(‘/category’, function(req, res) { var string = encodeURIComponent(‘something that would break’); res.redirect(‘/?valid=’ + string); }); You can snag that in your other … Read more
Node.js is built upon libuv, a cross-platform library that abstracts apis/syscalls for asynchronous (non-blocking) input/output provided by the supported OSes (Unix, OS X and Windows at least). Asynchronous IO In this programming model open/read/write operation on devices and resources (sockets, filesystem, etc.) managed by the file-system don’t block the calling thread (as in the typical … Read more
The primary committer to node-mongodb-native says: You open do MongoClient.connect once when your app boots up and reuse the db object. It’s not a singleton connection pool each .connect creates a new connection pool. So, to answer your question directly, reuse the db object that results from MongoClient.connect(). This gives you pooling, and will provide … Read more