code: function PaperRipple(cfg) {
          if (cfg === void 0) { cfg = {}; }
          this.waves = [];
          this.initialOpacity = cfg.initialOpacity || 0.25;
          this.opacityDecayVelocity = cfg.opacityDecayVelocity || 0.8;
          this.initTarget(cfg && cfg.nodeType ? cfg : cfg.target && cfg.target.nodeType ? cfg.target : null);
          this.recenters = cfg.recenters || this.recenters;
          this.center = cfg.center || this.center;
          this.round = cfg.round || this.round;
      }
docs: Initializes a new instance of the `PaperRipple` class with the specified `config` object.