Since version 0.16.5, th following code returns a null worksheet:
XLSX.utils.json_to_sheet([], {header: columns})

Is it now working as it is wanted? If so, how could we create an empty worksheet? In my case it is expected that sometimes the data is an empty array. And an empty worksheet only with headers is expected.

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.2.2
• Cross-platform modules: 6.0.1
• Android Runtime: 6.2.0
• iOS Runtime: 6.2.0
• Plugin(s): unrelated

Describe the bug
openFile method of utils module does not preview the

Issue details

While in a LibGDX environment if you press down a key and then switch to any window outside of LibGDX's scope and release that key, the LibGDX environment does not detect that release event.

Upon re-entry to the LibGDX environment, there should probably be some re-polling evaluation of the keys LibGDX thinks are pressed keys to determine if they are still pressed or not.