I am trying to do a FileExist check within a JavaScript Qlik Sense Extension. I have .png files in the Extension folder: i.e. ...\Qlik\Sense\Extensions\mycustomexport\lib\images\, unfortunately, I might not necessarily have every image I will try to load. I need to have a FileExist check which does not seem to work as expected.
If I load a file that exists everything works just if the file not exists the extension execution fails silently. I tried a naive JS fileexist check but this does not seem to work:
constfilesys = require('fs')
if (filesys.existsSync("/extensions/mycustomexport/lib/images/thepng.png")) {
console.log("yep, I am here");
}else{
console.log("nope");
}
I am also not overly familiar with JavaScript, so I am not sure if my problem is a pure JS one or if the Qlik environment adds something that I am not aware of - referencing existing files does work, the pngs are loaded. I just can't do 'does exist' checks.
I would appreciate any pointers.
My Javascript uses below blueprint and I do the export to my file within the 'paint' block
