Fixed var to let

    constructor(targetName) {

      this.targetName = targetName;

      var targets = MY_JSON_MAPS['targets'];

      for(var i = 0; i < targets.length; i++) {

        var currentTarget = targets[i];

      let targets = MY_JSON_MAPS['targets'];

      for(let i = 0; i < targets.length; i++) {

        let currentTarget = targets[i];

        if (currentTarget['name'].toLowerCase() == targetName ) {

          this.dMajorRadius = parseFloat(currentTarget['aaxisradius'] * 1000);