From ba1f5b13e04e9c02a837aa92dc59a8509f5906ca Mon Sep 17 00:00:00 2001
From: Fedor Indutny <fedor@indutny.com>
Date: Tue, 19 Apr 2016 17:50:36 -0400
Subject: [PATCH] module: expose `Module._runInThisContext`

`Module._runInThisContext` can be overridden to store/load cached
compilation artifacts when embedding node.js .
---
 lib/module.js                                   |  6 +++++-
 test/fixtures/empty.js                          |  1 +
 .../parallel/test-module-run-in-this-context.js | 17 +++++++++++++++++
 3 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 test/parallel/test-module-run-in-this-context.js

diff --git a/lib/module.js b/lib/module.js
index 29a23776d790d2..6a63337545562f 100644
--- a/lib/module.js
+++ b/lib/module.js
@@ -461,6 +461,10 @@ Module.prototype.require = function(path) {
 var resolvedArgv;
 
 
+// Overridable method, may be useful for caching compilation results
+Module._runInThisContext = runInThisContext;
+
+
 // Run the file contents in the correct scope or sandbox. Expose
 // the correct helper variables (require, module, exports) to
 // the file.
@@ -497,7 +501,7 @@ Module.prototype._compile = function(content, filename) {
   // create wrapper function
   var wrapper = Module.wrap(content);
 
-  var compiledWrapper = runInThisContext(wrapper, {
+  var compiledWrapper = Module._runInThisContext(wrapper, {
     filename: filename,
     lineOffset: 0,
     displayErrors: true
diff --git a/test/fixtures/empty.js b/test/fixtures/empty.js
index e69de29bb2d1d6..5885289003f0a4 100644
--- a/test/fixtures/empty.js
+++ b/test/fixtures/empty.js
@@ -0,0 +1 @@
+// Intentionally empty
diff --git a/test/parallel/test-module-run-in-this-context.js b/test/parallel/test-module-run-in-this-context.js
new file mode 100644
index 00000000000000..86ba8f41e210bd
--- /dev/null
+++ b/test/parallel/test-module-run-in-this-context.js
@@ -0,0 +1,17 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const vm = require('vm');
+const path = require('path');
+const Module = require('module');
+
+let counter = 0;
+
+Module._runInThisContext = function runInThisContext(source, options) {
+  counter++;
+  return vm.runInThisContext(source, options);
+};
+
+const empty = require(path.join(common.fixturesDir, 'empty.js'));
+
+assert.equal(counter, 1);