I’m guessing but I would imagine once flash becomes unusable for whatever reason it will be removed. It looks like it’s on its way out anyway:
Internet search wrote:Chrome, Microsoft Edge, and Safari have all been blocking Flash over the past year, but Adobe is now planning to remove support for it fully by the end of 2020. ... HTML5 standards have been implemented across all modern web browsers, and the need for Flash just isn't there anymore.25 Jul 2017
There’s all sorts of information available by a Google search on converting including executables and on line convertors. You can also look at the developers area of google.com.