Feature request: Mesh smoothing filter in vtkjs

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I have tried the Marching cubes filter but is not working as it expects a 3D image data, not a mesh

vtkPolyData=...; // the data

// This doesn't work
let meshSmoother = vtk.Filters.General.vtkImageMarchingCubes.newInstance({computeNormals: true, mergePoints: true});
meshSmoother.setInputData(vtkPolyData);
globalScene.mapper.setInputConnection(meshSmoother.getOutputPort());

// However, this works fine (unsmoothed)
globalScene.mapper.setInputData(vtkPolyData);

The first part launch an exception at reset camera function saying getOrigin is not a function

Uncaught TypeError: a.getOrigin is not a function
    at Vf.e.requestData (vtk.js:2:1014101)
    at Se.e.update (vtk.js:2:749747)
    at s (vtk.js:2:748117)
    at Array.n (vtk.js:2:749576)
    at Se.e.getInputData (vtk.js:2:749300)
    at e.getBounds (vtk.js:2:1279332)
    at vtk.js:2:1290265
    at Array.forEach (<anonymous>)
    at o (vtk.js:2:1289818)
    at e.pick (vtk.js:2:1292360)