Mocking the CSS webpack imports using identity-obj-proxy

I’m sure at some point you have encountered the SyntaxError: Unexpected token . error when preparing tests with Jest, it pointed at the dot of the CSS class name.

({“Object.“:function(module,exports,require,__dirname,__filename,global,jest){.my-class {
^
SyntaxError: Unexpected token .

If you are familiar with it then probably you have resolved it and probably already are using the identity-obj-proxy dependency in your project. For those who are searching for a solution please read on.
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