I am wanting to provide a spinner in my web app as I download a file from the server and then save it using the File System Access API.
I can do this using the showSaveFilePicker() but it seems very odd that I can't specify a default filename. I know what the filename of the file that I am downloading is so I want to suggest that to the user as the name of the file they should save it as. At the moment my user needs to come up with a name each time they are downloading it.
It seems very odd that I can't do this! There must be a way!
This is now supported as of Chrome 91 and you can specify a suggested file name as part of the parameters:
const handle = await self.showSaveFilePicker({
suggestedName: 'README.md',
types: [{
description: 'Markdown',
accept: {
'text/markdown': ['.md'],
},
}],
});
On older versions the suggestedName will just silently be ignored, so it's safe to add it today!