fs module

In this blog post, we will explore different methods to check if a file exists in the filesystem using Node.js and the fs module. We will cover both synchronous and asynchronous approaches. Using fs.existsSync() The easiest way to check if a file exists in Node.js is by using the fs.existsSync() method. This method is synchronous, which means it will block the program until the file’s existence is determined. const fs = require('fs'); const path = '....

Learn how to retrieve file details using Node.js Files contain various details that can be inspected using Node.js. One way to obtain these details is by using the stat() method provided by the fs module. To use this method, simply pass the file path as a parameter. Once Node.js retrieves the file details, it will invoke the callback function you provide with two parameters: an error message (if applicable) and the file stats....

Node.js built-in modules are well-known for not being promise-based. This was because these modules were created before promises became popular. Although the promisify function has been available for some time, Node.js introduced a new promise-based API starting from version 10. Currently, this new API is only available for the fs built-in module, and it remains uncertain whether it will be implemented for other native modules in the future. To utilize this new API, follow these steps:...

Learn how to efficiently interact with file descriptors in Node.js. In order to work with files in your filesystem using Node.js, you need to obtain a file descriptor. A file descriptor can be obtained by opening a file using the open() method provided by the fs module: const fs = require('fs'); fs.open('/Users/flavio/test.txt', 'r', (err, fd) => { // fd is the file descriptor }); In the above code, the second parameter 'r' signifies that the file should be opened for reading....

Learn how to interact with folders using Node.js and the fs core module. Discover methods for checking if a folder exists, creating a new folder, reading the content of a directory, renaming a folder, and removing a folder. Check if a folder exists To check if a folder exists and if Node.js has access to it, use the fs.access() method. const fs = require('fs'); const folderPath = '/path/to/folder'; fs.access(folderPath, (err) => { if (err) { console....