ReferenceError: window is not defined

[LeoReubelt]

When I use <CornerstoneViewport />, I get ReferenceError: window is not defined.

[LeoReubelt]

And if i dynamically import, i get the following error...

Unhandled Runtime Error
TypeError: Cannot set properties of undefined (setting 'cornerstone')

377 | console.log(cornerstone tools ---- , cornerstoneTools.external);
378 | // Cornerstone Tools

379 | cornerstoneTools.external.cornerstone = cornerstone;
| ^
380 | cornerstoneTools.external.Hammer = Hammer;
381 | cornerstoneTools.external.cornerstoneMath = cornerstoneMath;
382 | cornerstoneTools.init();