Google affirms that it renders all websites in its search results, even if those sites rely on JavaScript. Rendering Process Explained ...

Google has added new guidance to the "Fix Search-related JavaScript problems" help document, specifically addressing JavaScript-based paywalls.

Google's Gary Illyes said that Google Search can process JavaScript redirects but Google still does not recommend using JavaScript redirects because other search engines might not pick up on it.

Do you use Google Tag Manager or custom JavaScript with structured data? You will want to read this.