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I can't find more about fs.close explain in nodejs API. I want to know what the scenario call fs.close is necessary. for example:
var fs = require('fs'); fs.writeFile("/home/a.tex","abc"); or like fs.appendFile("/home/a.tex","close") fs.close(); //is it necessary? Are there any effects if i don't call fs.close?
Any help is appreciated.
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The Node.js file system module allows you to work with the file system on your computer. To include the File System module, use the require() method: var fs = require('fs'); Common use for the File System module: Read files.
close() Method. 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.
The fs module is responsible for all the asynchronous or synchronous file I/O operations. Let's see some of the common I/O operation examples using fs module.
You don't need to use fs.close after fs.readFile, fs.writeFile, or fs.appendFile as they don't return a fd (file descriptor). Those open the file, operate on it, and then close it for you.
The streams returned by fs.createReadStream and fs.createWriteStream close after the stream ends but may be closed early. If you have paused a stream, you must call close on the stream to close the fd or resume the stream and let it end after emitting all its data.
But if you call fs.open or any of the others that give a fd, you must eventually fs.close the fd that you are given.
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