Meanwhile, a non-canonical web site lets the search engines understand that the URL shouldn’t be indexed. It means that the site has a greater Variation with greater information that should get indexed instead. The JS redirect sounds like a little bit of a messy scenario, but to answer your question: https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html