The command is simply npm uninstall <name> The Node.js documents https://npmjs.org/doc/ have all the commands that you need to know with npm. A local install will be in the node_modules/ directory of your application. This won’t affect the application if a module remains there with no references to it. If you’re removing a global package, … Read more
This looks like a permissions issue in your home directory. To reclaim ownership of the .npm directory execute: sudo chown -R $(whoami) ~/.npm
The answer to this question has changed over the years. The current answer is here at the top, followed by the various answers over the years in chronological order: Current Answer You can use fs.existsSync(): const fs = require(“fs”); // Or `import fs from “fs”;` with ESM if (fs.existsSync(path)) { // Do something } It … Read more
You can use the fs.readdir or fs.readdirSync methods. fs is included in Node.js core, so there’s no need to install anything. fs.readdir const testFolder=”./tests/”; const fs = require(‘fs’); fs.readdir(testFolder, (err, files) => { files.forEach(file => { console.log(file); }); }); fs.readdirSync const testFolder=”./tests/”; const fs = require(‘fs’); fs.readdirSync(testFolder).forEach(file => { console.log(file); }); The difference between the … Read more
process.env.ENV_VARIABLE Where ENV_VARIABLE is the name of the variable you wish to access. See Node.js docs for process.env.
Since you’ve mentioned Express.js in your tags, here is an Express-specific answer: use req.query. E.g. var express = require(‘express’); var app = express(); app.get(“https://stackoverflow.com/”, function(req, res){ res.send(‘id: ‘ + req.query.id); }); app.listen(3000);
module.exports is the object that’s actually returned as the result of a require call. The exports variable is initially set to that same object (i.e. it’s a shorthand “alias”), so in the module code you would usually write something like this: let myFunc1 = function() { … }; let myFunc2 = function() { … }; … Read more
There is no native map to the Object object, but how about this: var myObject = { ‘a’: 1, ‘b’: 2, ‘c’: 3 }; Object.keys(myObject).forEach(function(key, index) { myObject[key] *= 2; }); console.log(myObject); // => { ‘a’: 2, ‘b’: 4, ‘c’: 6 } But you could easily iterate over an object using for … in: var … Read more
Apparently, there was a /Users/myusername/local folder that contained a include with node and lib with node and node_modules. How and why this was created instead of in my /usr/local folder, I do not know. Deleting these local references fixed the phantom v0.6.1-pre. If anyone has an explanation, I’ll choose that as the correct answer. EDIT: … Read more
node-inspector could save the day! Use it from any browser supporting WebSocket. Breakpoints, profiler, livecoding, etc… It is really awesome. Install it with: npm install -g node-inspector Then run: node-debug app.js