list all globally installed modules with one command in ubuntu
The below command will list all your globally installed modules on Linux, Mac, and Windows.
node.js
Express error – TypeError: Router.use() requires middleware function but got a Object
I am getting this error when I run npm start to run my express app. my app.js code my index.js code I am quirte new to using Node and express. I cant see where I have gone wrong. Can anybody see what my problem is?
How to properly export an ES6 class in Node 4?
If you are using ES6 in Node 4, you cannot use ES6 module syntax without a transpiler, but CommonJS modules (Node’s standard modules) work the same. should be hence the error message “Cannot set property ‘AspectType’ of undefined” because module.export === undefined. Also, for can you just write and get essentially the same behavior.
Error: Cannot find module ‘webpack’
Link globally installed package to your project: Checkout the official documentation of yarn link.
Push items into mongo array via mongoose
Assuming, var friend = { firstName: ‘Harry’, lastName: ‘Potter’ }; There are two options you have: Update the model in-memory, and save (plain javascript array.push): or I always try and go for the first option when possible, because it’ll respect more of the benefits that mongoose gives you (hooks, validation, etc.). However, if you are doing … Read more
Node update a specific package
Most of the time you can just npm update (or pnpm update or yarn upgrade) a module to get the latest non breaking changes (respecting the semver specified in your package.json) (<– read that last part again). Use [p]npm|yarn outdated to see which modules have newer versions Use [p]npm update|yarn upgrade (without a package name) to update all modules Major version upgrades: In your case, it … Read more
Passport and connect-flash: req.flash is not a function
The request object isn’t passed to the strategy callback by default, you need to set the passReqToCallback option for this: This is documented here.
XMLHttpRequest module not defined/found
XMLHttpRequest is a built-in object in web browsers. It is not distributed with Node. The http module is the built-in tool for making HTTP requests from Node. Most people making HTTP requests from node use a third party library with a friendlier API. Two popular choices are Axios (for use both in Node.js and browsers) and node-fetch (which implements the fetch API … Read more
error: This is probably not a problem with npm. There is likely additional logging output above
Finally, I found a solution to this problem without reinstalling npm and I’m posting it because in future it will help someone, Most of the time this error occurs javascript heap went out of the memory. As the error says itself this is not a problem with npm. Only we have to do is instead … Read more
node.js TypeError: path must be absolute or specify root to res.sendFile [failed to parse JSON]
The error is pretty clear, you need to specify an absolute (instead of relative) path and/or set root in the config object for res.sendFile(). Examples: or specify a root (which is used as the base path for the first argument to res.sendFile(): Specifying the root path is more useful when you’re passing a user-generated file path which could potentially contain malformed/malicious … Read more