An Mesh is the N-dimensional data structure to represent points sets and meshes for itk-wasm. It is intended to be used for data transfer and exchange as opposed to processing. A Mesh is a JavaScript object with the following properties:

meshType: The MeshType for this mesh.
name: An optional name, a String, that describes this mesh.
numberOfPoints: The number of points in the mesh.
points: A TypedArray containing the point locations.
numberOfPointPixels: The number of points pixels in the mesh.
pointData: A TypedArray containing the point pixel data.
numberOfCells: The number of cells in the mesh.
cells: A TypedArray containing the cells.
numberOfCellPixels: The number of cells pixels in the mesh.
cellData: A TypedArray containing the cell pixel data.
cellBufferSize: The size of the cell buffer in unsigned int‘s.

For more information, see the description of an itk::Mesh in the ITK Software Guide.