When you open the Chrome devtool and enter the code snippet below:
// The iife is irrelevant
let r = (() => { return 2; })();
and then evaluate r, the output will be:
r
2
Surprisingly, both window.r and globalThis.r return undefined. Although let is block scoped, it raises a question about where the parent object of r is located. Even though I can access r directly within the devtool, it seems to exist in a specific block that is not associated with any global object.
Sorry for the inconvenience, I am currently using my phone and unable to confirm this information. However, I believe there is a 'scope' tab included in the Dev tools where you can view variables within the current scope while debugging. Please note that this feature may not be accessible in the regular console.
https://developers.google.com/web/tools/chrome-devtools/javascript#scope
Upon revisiting your question, I realize that my response may not directly address the description provided. Nonetheless, it does pertain to the title of your question. I will keep this answer here for future reference.
When code is evaluated, it operates within the global scope. Any variable declared as "let" outside of any function will have a global scope.
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