JavaScript convert for loops to ES6/ES7

I’m asking little naive question, but I’m seriously I’m not sure how to convert this for loops

const filteredData = csiList.filter(item => {
        for (var i = 0, len = this.tableData.length; i < len; i++) {
          if (this.tableData[i].csiId == item.appId) {
            return false;
          }
        }
        return true;
      })

If some one can quickly show how this loops are/is written in more next gen JS ES6/ES7 way, would be of great help

>Solution :

const filteredData = csiList.filter(item => !this.tableData.some(tableDataItem => tableDataItem.csiId === item.appId));