&& after let not working

[podlaszczyk]

import QtQuick 2.10

Item {
  id: oneLinkMessage
  Item {
    id: linkTabstop
    anchors.fill: parent

    activeFocusOnTab: true
    NativeAcc.Link.name: {
      // Extract the link text
      let linkStart = oneLinkMessage.text.indexOf("[[")
      let linkEnd = oneLinkMessage.text.indexOf("]]")
      if(linkStart >= 0 && linkEnd >= 0)
        return oneLinkMessage.text.slice(linkStart+2, linkEnd)
      return ""
    }
  }

}