Missing a "line preserve" option

[marcominetti]

When using with other compilers that feature sourcemap support, lines are no preserved against original source code causing line mismatch during debugging or code coverage analysis.

Can you add this option?

[dcodeIO]

Unfortunately, I don't have the time atm to dig though full fledged source map generation, which I assume would be required here. If you know of any tools to make this easier, let me know. I am also always happy to see a PR :)

[marcominetti]

Hi! I'll review your code and try to assess whether is quick to integrate the sourcemap-related tools... And definitely wait for a PR... ;)

Do u use any AST parser or plain string-handling stuff?

[dcodeIO]

The source is actually quite short. Here is how it compiles: https://github.com/dcodeIO/MetaScript/blob/master/MetaScript.js#L79