Issue 4088 - JSHydra-generated module scopes shouldn't be called immediately

scripts/abprewrite.js

Index: scripts/abprewrite.js
===================================================================
--- a/scripts/abprewrite.js
+++ b/scripts/abprewrite.js
@@ -7,16 +7,17 @@ include("../utils/beautify.js");
 let headerPrinted = false;
 
 // See https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API for
 // AST structure.
 
 let options = {
   filename: null,
   module: false,
+  autoload: "",
   varIndex: 0,
   indent_size: 2,
   preserve_newlines: false,
   brace_style: "expand",
   source_repo: ""
 };
 let global = this;
 
@@ -491,17 +492,17 @@ function modifyYieldExpression(ast)
       callee: Member(options.generatorVar, "push"),
       arguments: [ast.argument]
     };
   }
   else
     return null;
 }
 
-process_js = function(ast, filename, args)
+var process_js = function(ast, filename, args)
 {
   for (let arg of args.split(/\s+/))
   {
     let match = /^(\w+)\s*=\s*(.*)/.exec(arg);
     if (match && typeof options[match[1]] == "boolean")
       options[match[1]] = (match[2] == "true");
     else if (match && typeof options[match[1]] == "string")
       options[match[1]] = match[2];
@@ -551,19 +552,38 @@ process_js = function(ast, filename, arg
   {
     // Wrap the entire module into a function to give it an independent scope.
     // Return exported symbols:
     //
     // require.scopes["foobar"] = (function() {
     //   var exports = {};
     //   ...
     //   return exports;
-    // })();
+    // });
     let code = 'require.scopes["' + options.filename + '"] = (function() {\n' +
                decompileAST(ast).replace(/^("use strict";\n)?/,
                                          "$1var exports = {};\n") +
                'return exports;\n' +
-               '})();\n';
+               '});\n';
     _print(js_beautify(code, options));
   }
   else
     _print(js_beautify(decompileAST(ast), options));
-}
+};
+
+var post_processing = function()
+{
+  let autoloadModules = options.autoload.split(/[\s,]+/);
+  for (let module of autoloadModules)
+  {
+    if (module == "")
+      continue;
+
+    _print(decompileAST({
+      type: "ExpressionStatement",
+      expression: {
+        type: "CallExpression",
+        callee: Identifier("require"),
+        arguments: [Literal(module)]
+      }
+    }));
+  }
+};