fix(macros): report non-IO errors from #[load] instead of ignoring them

CHANGELOG.md

@@ -8,6 +8,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ## [Unreleased]
 
 ### Changed
+- `#[dotenvy::load]` now reports and exits on non-IO errors (such as parse errors) instead of silently ignoring them
 - update to 2021 edition
 - update MSRV to 1.74.0
 

dotenvy-macros/src/lib.rs

@@ -35,16 +35,17 @@ pub fn load(attr: TokenStream, item: TokenStream) -> TokenStream {
         };
         let mut loader = EnvLoader::with_path(#path).sequence(seq);
         if let Err(e) = unsafe { loader.load_and_modify() } {
-            if let Some(io_err) = e.source().and_then(|src| src.downcast_ref::<io::Error>()) {
-                match (io_err.kind(), #required) {
-                    (io::ErrorKind::NotFound, false) => (),
-                    _ => {
-                        eprintln!("{e}");
-                        process::exit(1);
-                    }
+            let io_kind = e
+                .source()
+                .and_then(|src| src.downcast_ref::<io::Error>())
+                .map(io::Error::kind);
+            match (io_kind, #required) {
+                (Some(io::ErrorKind::NotFound), false) => (),
+                _ => {
+                    eprintln!("{e}");
+                    process::exit(1);
                 }
             }
-
         }
     };