smoke tests

src/parser.zig

@@ -745,6 +745,7 @@ pub const Parser = struct {
         }
 
         // Body: block `{ ... }`, arrow `=> expr;`, #builtin, or #foreign marker
+        var is_arrow = false;
         const body = if (self.current.tag == .hash_builtin) blk: {
             const bi_start = self.current.loc.start;
             self.advance();
@@ -756,6 +757,7 @@ pub const Parser = struct {
             try self.expect(.semicolon);
             break :blk try self.createNode(fi_start, .{ .foreign_expr = {} });
         } else if (self.current.tag == .fat_arrow) blk: {
+            is_arrow = true;
             self.advance();
             const expr = try self.parseExpr();
             try self.expect(.semicolon);
@@ -774,6 +776,7 @@ pub const Parser = struct {
             .return_type = return_type,
             .body = body,
             .type_params = type_params,
+            .is_arrow = is_arrow,
         } });
     }