Is there a way to convert an uploaded h5 script from .js back to a .ts?

Hi,

I am analyzing a bunch of h5 scripts in preparation for migration. Client said they don't have the .ts version of the files. While we still can read the .js file it is unorganized and is just inviting trouble.

With that said do we have a way of transpiling back .js to .ts?

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Legacy Contributor

No, there is no automatic way to do it. See same question on StackOverflow, https://stackoverflow.com/questions/66560240/converting-back-from-javascript-to-typescript.

You can manually migrate js to ts but if you only have .js file, then all typings are lost. Personally as long as the file is not minified, which is what I would recommend you to do for all js files, it's not complicated or hard to transform them back. It's just tedious, especially since typings are gone and those help you to understand more complex code.

If they are minified, it gets harder to read, but still possible.

Migration? In what way? If there is anything leaving the bounds of the LAN for the customer then make sure that there are absolutely no secrets in the JavaScript. Even on an isoleted network you should never ever have secrets in the scritps. Those are easily spotted.

Any person with minor technical training can find them.

Legacy Contributor

Hi Karin,

Thanks for your answer I saw this as well yesterday while searching for answers. There was an npm tool to convert but it only added alignments. I am currently looking at babel js now not sure if it would help be of help but will still try.

Yes, the code is not minified. Just thought I'd check first since if ever some other people are asked to change the scripts they can work with typescript.

The migration is to another server. While it's just a simple export import. I am checking the scripts for any config dependencies so that we know which one we should requires further setup.

Anyway, thanks for the clarification. I guess for now there is no way unless babel actually works.

David Tollet

Hi,

Please let us know if you manage to get something correct with Babel, this could be interesting also for us !

Regards,

David.

Legacy Contributor

Sorry just learned that babel works the same way as the typescript compiler, it's just better at making sure the js functions you have will be supported on old browser. So basically it is a tool for ts --> js and not what we are looking for.

I guess I am stuck working with the transpiled code since they don't have the copies.

antonio-caria

NO. It's not possible if Ypou want use a true TS specification.

I have done it manually many times.

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