Menu
My script needs to read and write from a JSON file. This works without problems.
I copy the file locally, edit the object, and write them back out to the file.
However, when I close the script with Ctrl+C and check my file it has [object, object] instead of the actual objects that should be there.
This doesn't happen all every time, but is annoying because my script depends on this file.
Any ideas for how to prevent this from closing the reader incorrectly? I already tried checking the type before writing but it didn't seem to help much.
function writeConfig(obj) {
fs.writeFile('./config.json', obj, function (err) {
if (err) console.log(err);
});
}
251
writeFile both overwrite the file by default. Therefore, we don't have to add any extra checks.
Creating and writing files with writeFileSync is only recommended for debugging purposes, just like every other synchronous function in Node. As such, you should use the asynchronous function writeFile for creating and writing files in real-world projects.
Promise version of fs. writeFile: Asynchronously writes data to a file, replacing the file if it already exists.
The fs. writeFileSync() is a synchronous method. The fs. writeFileSync() creates a new file if the specified file does not exist.
I believe you should convert the obj to a JSON string, otherwise it's a real - JSON object that can't be simply be written into file
JSON.stringify(obj)
https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
134
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
