preventOverflow: {\n          boundariesElement: this.config.boundary\n        }\n      },\n      onCreate: data => {\n        if (data.originalPlacement !== data.placement) {\n          this._handlePopperPlacementChange(data)\n        }\n      },\n      onUpdate: data => this._handlePopperPlacementChange(data)\n    }\n\n    return {\n      ...defaultBsConfig,\n      ...this.config.popperConfig\n    }\n  }\n\n  _getOffset() {\n    const offset = {}\n\n    if (typeof this.config.offset === 'function')...