Get list of touched (by @extends) files

[kopach]

I've created webpack loader based on your tool: https://github.com/kopach/json_merger-loader
And now I would like to update it to have an ability to auto recompile files if something got changes. To do so I would need to get somehow all touched files. For example, if fileA.json uses ./path/fileB.json which uses ./fileC.json and so on, I would like to have the list of next files with related to the main file fileA.json paths. In this case it would be like so:

['./path/fileB.json', './path/fileC.json']

Is there any chance to update json_merger to have such functionality? The interface I can imagine may look like this:

var merger = json_merger(json, {
   scope: '/some/path';
});

var paths = merger.getListOfTouchedFiles();
var result = merger.merge();

[andlrc]

Very interesting question, I think it would be possible but one would need to parse all dependent files to look for new dependencies I was thinking making a proper lexer one day, instead of relying on `JSON.parse`. If you feel intrigued about contributing, then don't hesitate to make a pull request !