Fix a case with an empty body with comment(s)

make_grammar.js

@@ -37,7 +37,9 @@ module.exports = function make_grammar(dialect) {
       // also allow objects to handle .tfvars in json format
       config_file: $ => optional(choice($.body, $.object)),
 
-      body: $ => seq(
+      body: $ => choice(
+        $._shim,
+        seq(
           optional($._shim),
           repeat1(
             choice(
@@ -46,6 +48,7 @@ module.exports = function make_grammar(dialect) {
             ),
           ),
         ),
+      ),
 
       attribute: $ => seq(
         $.identifier,

src/scanner.cc

@@ -98,6 +98,8 @@ public:
       return false;
     }
     if (valid_symbols[SHIM]) {
+      lexer->mark_end(lexer);
+      while(skip_comment(lexer));
       if (lexer->lookahead != '}') {
         return accept_inplace(lexer, SHIM);
       }
@@ -271,6 +273,20 @@ private:
     return iswxdigit(lexer->lookahead);
   }
 
+  bool skip_comment(TSLexer* lexer) {
+    while (iswspace(lexer->lookahead)) {
+      skip(lexer);
+    }
+    if (lexer->lookahead != '#') {
+      return false;
+    }
+    skip(lexer);
+    while (lexer->lookahead != '\n') {
+      skip(lexer);
+    }
+    return true;
+  }
+
   bool in_context_type(ContextType type) {
     if (context_stack.empty()) {
       return false;