Report unfinished import as

crates/compiler/load/tests/test_reporting.rs

@@ -4968,6 +4968,25 @@ mod test_reporting {
     "###
     );
 
+    test_report!(
+        unfinished_import_alias,
+        indoc!(
+            r"
+            import svg.Path as
+            "
+        ),
+        @r###"
+    ── UNFINISHED IMPORT in tmp/unfinished_import_alias/Test.roc ───────────────────
+
+    I was partway through parsing an `import`, but I got stuck here:
+
+    4│      import svg.Path as
+                              ^
+
+    I just saw the `as` keyword, so I was expecting to see an alias next.
+    "###
+    );
+
     test_report!(
         ingested_file_import_ann_syntax_err,
         indoc!(

crates/reporting/src/error/parse.rs

@@ -1502,10 +1502,21 @@ fn to_import_report<'a>(
                 ]),
             )
         }
+        IndentAlias(pos) | Alias(pos) => to_unfinished_import_report(
+            alloc,
+            lines,
+            filename,
+            *pos,
+            start,
+            alloc.concat([
+                alloc.reflow("I just saw the "),
+                alloc.keyword("as"),
+                alloc.reflow(" keyword, so I was expecting to see an alias next."),
+            ]),
+        ),
+
         Annotation(problem, pos) => to_type_report(alloc, lines, filename, problem, *pos),
         Space(problem, pos) => to_space_report(alloc, lines, filename, problem, *pos),
-        IndentAlias(_) => todo!(),
-        Alias(_) => todo!(),
         ExposingListStart(_) => todo!(),
         ExposedName(_) => todo!(),
         ExposingListEnd(_) => todo!(),