pub fn at_path_reason(at: &str) -> Option<&'static str>Expand description
Why at is not a valid fixed URL path for an asset, or None when it is.
It must be an absolute URL path naming a file: starting with /, not
ending in /, with no empty, . or .. segment, and only
[A-Za-z0-9._~-] between the slashes (so it needs no encoding). It may not
lie under SERVED_PREFIX (the content-hashed files’ space) or /_bynk/
(Bynk’s own dispatch), nor be one of the root files the platform reads as
configuration (/_headers, /_redirects, /.assetsignore).