How can I change the file type association of an existing file in WebStorm?

Question

I accidentally created a file with no extension and I chose the wrong file type association. Text Document I think. I renamed it to have the .js extension which is what I

Answer 1

I've found a solution, delete (o rename as .old) the file: C:\Users\.PyCharmCE\config\options\filetypes.xml

Es: C:\Users\goofy.PyCharmCE2018.3\config\options\filetypes.xml