The fs.close() method is used to asynchronously close the given file descriptor thereby clearing the file that is associated with it. This will allow the file descriptor to be reused for other files. Calling fs.close() on a file descriptor while some other operation is being performed on it may lead to undefined behavior....

File-writing is an important aspect of programming. Every programming language has a well-defined file module that can be used to perform file operations. JavaScript and Node.js also have file module which provides various inbuilt methods for performing read, write, rename, delete and other operations on files. The file module of Node.js is called the fs module. By default, the fs module writes files with an encoding of ‘UTF-8’....

The fs.promise.readdir() method defined in the File System module of Node.js. The file System module is basically to interact with the hard disk of the users computer. The readdir() method is used to read the files and folders names. The fs.promise.readdir() method returns a resolved or rejected promise and hence avoid the callback nesting or callback hell problems that may occur in fs.readdir() method....

The fs.watch() method is an inbuilt application programming interface of fs module which is used to continuously watch for changes in the given file or directory. It returns a fs.FSWatcher object that can be used to track the changes in the file....

The fs.renameSync() method is used to synchronously rename a file at the given old path to the given new path. It will overwrite the destination file if it already exists....

Node.js is used for server-side scripting. Reading and writing files are the two most important operations that are performed in any application. Node.js offers a wide range of inbuilt functionalities to perform read and write operations. The fs package contains the functions required for file operations. The read() method of the fs package reads the file using a file descriptor. In order to read files without file descriptors the readFile() method of the fs package can be used....

The fs.rm() method is used to delete a file at the given path. It can also be used recursively to remove directories....

The fsPromises.writeFile() method is used to asynchronously write the specified data to a file. By default, the file would be replaced if it exists. The ‘options’ parameter can be used to modify the functionality of the method....

Node.js is an enhancement to the already existing JavaScript. It is used for server-side scripting. It is mostly used to develop dynamic web applications. Node.js developers prefer the use of asynchronous functions over synchronous functions as the former does not block program execution under any circumstances. Copying files or folders with multiple subfolders can be tedious using conventional Node.js file copying methods. However, the use of additional modules makes the task easier....

The fs.symlink() method is used to create a symlink to the specified path. This creates a link making the path point to the target. The relative targets are relative to the link’s parent directory....

The fs.openSync() method is an inbuilt application programming interface of fs module which is used to return an integer value that represents the file descriptor....

The fs.rmSync() method is used to synchronously delete a file at the given path. It can also be used recursively to remove the directory by configuring the options object. It returns undefined....