How to use the transformation-matrix.toSVG function in transformation-matrix

updateTransform(): void {
    this.transform = toSVG(smoothMatrix(this.transformationMatrix, 100));
  }

const collection = TreeWalker.walkDown(clone, (n, l) => {
            if (l === 0) return _.set(n, pathToTempAttr, _.get(n, pathToAttr, ''));
            const mat = compose(transformationToMatrix(n.parent, tempKey), transformationToMatrix(n));
            const accTransformAttr = matrixUtil.toSVG(mat);
            return _.set(n, pathToTempAttr, accTransformAttr);
        });

function () {
        this.transform = toSVG(this.transformationMatrix);
    };
    /**

var nextValue = _onTouchCancel(event, _this3.ViewerDOM, _this3.getTool(), _this3.getValue(), _this3.props);
              if (_this3.getValue() !== nextValue) _this3.setValue(nextValue);
              _this3.handleViewerEvent(event);
            } },
          React.createElement('rect', {
            fill: props.background,
            x: 0,
            y: 0,
            width: value.viewerWidth,
            height: value.viewerHeight,
            style: { pointerEvents: "none" }
          }),
          React.createElement(
            'g',
            {
              transform: toSVG(value),
              style: blockChildEvents ? { pointerEvents: "none" } : {} },
            React.createElement('rect', {
              fill: this.props.SVGBackground,
              x: 0,
              y: 0,
              width: value.SVGWidth,
              height: value.SVGHeight }),
            React.createElement(
              'g',
              null,
              props.children.props.children
            )
          ),
          React.createElement(
            If,
            { condition: tool === TOOL_NONE && props.detectAutoPan && value.focus },

let nextValue = onTouchCancel(event, this.ViewerDOM, this.getTool(), this.getValue(), this.props);
            if (this.getValue() !== nextValue) this.setValue(nextValue);
            this.handleViewerEvent(event);
          }}>