Manipulate HDF5 and load library on Cesium app local

To manipulate .hdf5 files i need to use either jsfive or h5wave library. And i don’t know why but use the static method to import the library send back the message:

import hdf5 from ‘’;
—> Uncaught SyntaxError: Cannot use import statement outside a module

So I change the module status but i have the same results:

Maybe because it’s an local app or idk

If you have some documentation or some clues, i’ll be gratful