→ 0.7.1, restart watching gobblefile if it's deleted/moved away

[IvanSanchez]

Fixes gobblejs/gobble#110

The root cause was my text editor (kate): when making modifications to a file, it moves (renames) the existing file (gobblefile.js) into a backup file (gobblefile.js~), and re-creates a file with the original name. Pathwatcher interprets that as deleting the file.

[Rich-Harris]

what about a setInterval that gets cancelled once the file exists again? Or, equivalently...

function checkGobbleFileExists () {
  fs.exists( gobblefile, exists => exists ? restart() : setTimeout( checkGobbleFileExists, 100 ) );
}

// ...
if ( type === 'delete' ) {
  logger.info({ code: 'GOBBLEFILE_DELETED' });
  return setTimeout( checkGobbleFileExists, 100 );
}

That way you don't have to wait 2 seconds each time the editor saves. Thoughts?

[IvanSanchez]

I don't have a strong opinion about this particular bit. Waiting 2 seconds works reliably for my use case, but I can see the appeal of checking for the gobblefile in a loop.