Question on code

[jswelsh]

I'm trying to reason with this code, I know this is probably fairly obvious but I'm jr.dev 😝 so I have no idea.

in material-ui-filter/src/store/selectors.js line 46-55

  var sortOrder = sortOrientation ? 1 : -1

  return (x, y) => {
    var a = getValue(x, sortField, getSourceValue)
    var b = getValue(y, sortField, getSourceValue)
    var result = a < b ? -1 : a > b ? 1 : 0
    return result * sortOrder
  }
} 

the x, y doesn't reference anything in scope,
it's an anonymous function, providing undefined values... I Think. Shouldn't it always be undefined then? I've console.log() to try and peek inside but I still don't get it.

[TarikHuber]

This package is anyway not supported anymore. The new version is build in the react-most-wanted package