Function ash_normalize_binding 

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

Normalize a binding string to canonical form (v2.3.2+ format).

Bindings are in the format: “METHOD|PATH|CANONICAL_QUERY”

Normalization Rules

• Method uppercased
• Path starts with /
• Duplicate slashes collapsed
• Trailing slash removed
• Query string canonicalized
• Parts joined with | (pipe)

@param method - HTTP method (GET, POST, etc.) @param path - URL path @param query - Query string (empty string if none) @returns Canonical binding string (METHOD|PATH|QUERY) @throws Error if method is empty or path doesn’t start with /