Enhancement of key type testing in recursive build

[qtipee]

When recursively re-building the hierarchical structure of the uploaded files from the Map, we need to test if the current key is a file or a folder. For now, the way of testing is by checking wether the key has a dot in its name (for the file extension) ; a folder containing a dot in its name will cause trouble. Need to find a better way to test the type of the key.

Using typeof won't work, because it returns object in both cases (File and Map are objects).

pwa-playlist-generator/app/js/app.js

Lines 98 to 123 in f8523cf

	//
	function folderRecursiveBuild(currentFolder, parentFolder=zipBuilder)
	{
	let htmlTree = '';
	for (let [k, v] of currentFolder)
	{
	// Audio file
	//FIXME: to improve ; cannot have a folder with a .
	if (k.includes('.'))
	{
	parentFolder.file(v.name, v);
	htmlTree += '<li><a href="' + v.webkitRelativePath + '" class="audio-src">' + v.name + '</a><a href="' + v.webkitRelativePath + '" class="cache-audio">Download</a></li>';
	}
	// Folder
	else
	{
	htmlTree += '<ul><li>' + k + '</li>';
	htmlTree += folderRecursiveBuild(v, parentFolder.folder(k));
	htmlTree += '</ul>';
	}
	}
	return htmlTree;
	}