Canvas Link

https://learning.flatironschool.com/courses/4379/pages/video-client-server-post-request-error-handling?module_item_id=318729

Concern

It's possible i've missed some material, but upon seeing the line of code in line 37 I do not feel that all the pieces of this error handling were explained. Specifically what do all the pieces of this code do?

res.json().then(e => setErrors(Object.entries(e.error).flat()))

we have covered res.json(), and setting state with the setter function (setErrors) but have had very very exposure to the other pieces. Is objects a Class? havn't talked about that in javascript. what are ".entries"? and .flat()?

Basically it feels not well explained. Hopefully this is not too confusing. Thank you.

Additional Context

No response

Suggested Changes

Talk in more detail about these last pieces of code in the error handling since we have not been exposed to them before.