Note: Recent npm versions do this automatically when running npm install if package-locks are enabled, so this is not necessary except for removing development packages with the –production flag. Run npm prune to remove modules not listed in package.json. From npm help prune: This command removes “extraneous” packages. If a package name is provided, then … Read more
The issue is with how ES6 modules are emulated in CommonJS how you import the module ES6 to CommonJS At the time of writing this, no environment supports ES6 modules natively. When using them in Node.js you need to use something like Babel to convert the modules to CommonJS. But how exactly does that happen? … Read more
You can use an npm module called depcheck (requires at least version 10 of Node). Install the module: npm install depcheck -g or yarn global add depcheck Run it and find the unused dependencies: depcheck The good thing about this approach is that you don’t have to remember the find or grep command. To run … Read more
This simple diagram will help to you understand the differences between require and import. Apart from that, You can’t selectively load only the pieces you need with require but with import, you can selectively load only the pieces you need, which can save memory. Loading is synchronous(step by step) for require on the other hand … Read more
nohup node server.js > /dev/null 2>&1 & nohup means: Do not terminate this process even when the stty is cut off. > /dev/null means: stdout goes to /dev/null (which is a dummy device that does not record any output). 2>&1 means: stderr also goes to the stdout (which is already redirected to /dev/null). You may … Read more
1) What is Express.js? Express.js is a Node.js framework. It’s the most popular framework as of now (the most starred on NPM). . It’s built around configuration and granular simplicity of Connect middleware. Some people compare Express.js to Ruby Sinatra vs. the bulky and opinionated Ruby on Rails. 2) What is the purpose of it … Read more
Environment variables (in this case) are being used to pass credentials to your application. USER_ID and USER_KEY can both be accessed from process.env.USER_ID and process.env.USER_KEY respectively. You don’t need to edit them, just access their contents. It looks like they are simply giving you the choice between loading your USER_ID and USER_KEY from either process.env … Read more
You can use npm shrinkwrap functionality, in order to override any dependency or sub-dependency. I’ve just done this in a grunt project of ours. We needed a newer version of connect, since 2.7.3. was causing trouble for us. So I created a file named npm-shrinkwrap.json: { “dependencies”: { “grunt-contrib-connect”: { “version”: “0.3.0”, “from”: “grunt-contrib-connect@0.3.0”, “dependencies”: … Read more
The easiest way that I can see is delete node_modules folder and execute npm install.
The following should tell you. From the docs: fs.lstatSync(path_string).isDirectory() Objects returned from fs.stat() and fs.lstat() are of this type. stats.isFile() stats.isDirectory() stats.isBlockDevice() stats.isCharacterDevice() stats.isSymbolicLink() // (only valid with fs.lstat()) stats.isFIFO() stats.isSocket() NOTE: The above solution will throw an Error if; for ex, the file or directory doesn’t exist. If you want a true or false … Read more