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I know it is a simple question, but haven't been able to find anything useful on this one.
How do you use fs.createWriteStream(dst) to overwrite a file? (note that the app is hosted on heroku)
I tried {flags: 'w'} or {flags: 'r+'} even {flags: 'wb'}. None of these worked, I keep getting
Error: File uploads/1.txt exists.
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To write in a text file without overwriting with Node. js, we can use the appendFile method. to call fs. appendFile with the path of the file to write to and the content to write into the file respectively.
writeFileSync() is a synchronous method & creates a new file if the specified file does not exist while fs. writeFile() is an asynchronous method.
In Node. js, you can use the fs. unlink() method provided by the built-in fs module to delete a file from the local file system.
From the docs:
Modifying a file rather than replacing it may require a flags mode of r+ rather than the default mode w.
So {flags: 'w'} should work. This sounds like a permissions issue?
Are you able to do an fs.unlink() on that file? This should test the permissions on that file if you don't have access to the computer directly.
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Isn't the flag 'w' set by default ? https://nodejs.org/api/fs.html#fs_fs_createwritestream_path_options
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