Function ash_normalize_binding 

pub fn ash_normalize_binding(
    method: &str,
    path: &str,
) -> Result<String, JsValue>

Normalize a binding string to canonical form.

Bindings are in the format: “METHOD /path”

Normalization Rules

• Method uppercased
• Path starts with /
• Query string excluded
• Duplicate slashes collapsed
• Trailing slash removed

@param method - HTTP method (GET, POST, etc.) @param path - URL path @returns Canonical binding string @throws Error if method is empty or path doesn’t start with /