text: function _instanceof(left, right) { if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) { return right[Symbol.hasInstance](left); } else { return left instanceof right; } }
  
  function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
  
  function _classCallCheck(instance, Constructor) { if (!_instanceof(instance, Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  
  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
  
  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
  
  function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
  
  function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
  
  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } _setPrototypeOf(subClass.prototype, superClass && superClass.prototype); if (superClass) _setPrototypeOf(subClass, superClass); }
  
  function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
  
  import TransitionInterpolator from './transition-interpolator';
  import { lerp } from 'math.gl';
  var VIEWPORT_TRANSITION_PROPS = ['longitude', 'latitude', 'zoom', 'bearing', 'pitch'];
  /**
   * Performs linear interpolation of two view states.
   */
  
  var LinearInterpolator =
  /*#__PURE__*/
  function (_TransitionInterpolat) {
    _inherits(LinearInterpolator, _TransitionInterpolat);
  
    /**
     * @param {Array} transitionProps - list of props to apply linear transition to.
     */
    function LinearInterpolator() {
      var transitionProps = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : VIEWPORT_TRANSITION_PROPS;
  
      _classCallCheck(this, LinearInterpolator);
  
      return _possibleConstructorReturn(this, (LinearInterpolator.__proto__ || Object.getPrototypeOf(LinearInterpolator)).call(this, transitionProps));
    }
  
    _createClass(LinearInterpolator, [{
      key: "interpolateProps",
      value: function interpolateProps(startProps, endProps, t) {
        var viewport = {};
  
        for (var key in endProps) {
          viewport[key] = lerp(startProps[key], endProps[key], t);
        }
  
        return viewport;
      }
    }]);
  
    return LinearInterpolator;
  }(TransitionInterpolator);
  
  export { LinearInterpolator as default };
  //# sourceMappingURL=linear-interpolator.js.map