Does shopify have a load method name similar to window?

Topic summary

Main issue: A developer reports that using the browser’s window load event in a Shopify storefront makes the page appear static for a long time before users can interact.

Question: Is there a Shopify-specific “load” method or earlier lifecycle hook they can use instead to enable earlier interactivity?

Context note: The window load event fires after all assets finish loading, which can delay UI initialization.

Status: No replies or solutions yet; the discussion remains open and unresolved.

Summarized with AI on February 2. AI used: gpt-5.

Shopify uses the load method of windows and finds that the website will be static for a long time before interacting. Does shopify have a load method similar to windows? thanks