reverting the closure wrapper removal again.

lib/coffee-script/nodes.js

@@ -303,7 +303,7 @@
     };
 
     Block.prototype.compileRoot = function(o) {
-      var code, e, exp, i, prelude, preludeExps, rest;
+      var code, exp, i, prelude, preludeExps, rest;
       o.indent = o.bare ? '' : TAB;
       o.scope = new Scope(null, this, null);
       o.level = LEVEL_TOP;
@@ -316,19 +316,22 @@
           _results = [];
           for (i = 0, _len = _ref2.length; i < _len; i++) {
             exp = _ref2[i];
-            e = exp.unwrap();
-            if (!(e instanceof Comment || e instanceof Literal)) break;
+            if (!(exp.unwrap() instanceof Comment)) break;
             _results.push(exp);
           }
           return _results;
         }).call(this);
         rest = this.expressions.slice(preludeExps.length);
         this.expressions = preludeExps;
-        if (preludeExps.length) prelude = "" + (this.compileNode(o)) + "\n";
+        if (preludeExps.length) {
+          prelude = "" + (this.compileNode(merge(o, {
+            indent: ''
+          }))) + "\n";
+        }
         this.expressions = rest;
       }
       code = this.compileWithDeclarations(o);
-      if (o.bare) return prelude + code;
+      if (o.bare) return code;
       return "" + prelude + "(function() {\n" + code + "\n}).call(this);\n";
     };
 

src/nodes.coffee

@@ -250,15 +250,14 @@ exports.Block = class Block extends Base
     prelude   = ""
     unless o.bare
       preludeExps = for exp, i in @expressions
-        e = exp.unwrap()
-        break unless e instanceof Comment or e instanceof Literal
+        break unless exp.unwrap() instanceof Comment
         exp
       rest = @expressions[preludeExps.length...]
       @expressions = preludeExps
-      prelude = "#{@compileNode o}\n" if preludeExps.length
+      prelude = "#{@compileNode merge(o, indent: '')}\n" if preludeExps.length
       @expressions = rest
     code = @compileWithDeclarations o
-    return prelude + code if o.bare
+    return code if o.bare
     "#{prelude}(function() {\n#{code}\n}).call(this);\n"
 
   # Compile the expressions body for the contents of a function, with