Report exposing list end error in imports

crates/compiler/load/tests/test_reporting.rs

@@ -5024,6 +5024,26 @@ mod test_reporting {
     I just saw the `exposing` keyword, so I was expecting to see `[` next.
     "###);
 
+    test_report!(
+        unfinished_import_exposing_name,
+        indoc!(
+            r"
+            import svg.Path exposing [3
+            "
+        ),
+        @r###"
+    ── WEIRD EXPOSING in tmp/unfinished_import_exposing_name/Test.roc ──────────────
+
+    I'm partway through parsing an exposing list, but I got stuck here:
+
+    4│      import svg.Path exposing [3
+                                      ^
+
+    I was expecting a type, value, or function name next, like:
+
+        import Svg exposing [Path, arc, rx]
+    "###);
+
     test_report!(
         ingested_file_import_ann_syntax_err,
         indoc!(

crates/reporting/src/error/parse.rs

@@ -1545,8 +1545,27 @@ fn to_import_report<'a>(
                 alloc.reflow(" next."),
             ]),
         ),
-        ExposedName(_) => todo!(),
+        ExposedName(pos) | ExposingListEnd(pos) => {
-        ExposingListEnd(_) => todo!(),
+            let surroundings = Region::new(start, *pos);
+            let region = LineColumnRegion::from_pos(lines.convert_pos(*pos));
+
+            let doc = alloc.stack([
+                alloc
+                    .reflow(r"I'm partway through parsing an exposing list, but I got stuck here:"),
+                alloc.region_with_subregion(lines.convert_region(surroundings), region),
+                alloc.reflow(r"I was expecting a type, value, or function name next, like:"),
+                alloc
+                    .parser_suggestion("import Svg exposing [Path, arc, rx]")
+                    .indent(4),
+            ]);
+
+            Report {
+                filename,
+                doc,
+                title: "WEIRD EXPOSING".to_string(),
+                severity: Severity::RuntimeError,
+            }
+        }
         IndentIngestedName(_) => todo!(),
         IngestedName(_) => todo!(),
         IndentAnnotation(_) => todo!(),