ensure that globals includes process and console

The code attaches global properties to the sandbox context by iterating
over all the enumerable properties of `global`. However, in node v10,
`console` switched [to being non-enmuerable][1]. This means that for
users of this library with node>10, any `console.log`s in evaluated
scripts will fail.

This commit fixes this issue by manually attaching console to the
sandbox (when globals are being used). A test has been added. Prior to
the change to eval.js, the test would pass in node v8 but fail in v10
and v12.

Also, the tests were already failing in v12, because in v12 `process`
also became non-enumerable. I've applied a similar fix to `process` to
ensure that it's always available too.

[1]: nodejs/node#17708

eval.js

@@ -36,6 +36,10 @@ module.exports = function (content, filename, scope, includeGlobals) {
 
   if (includeGlobals) {
     merge(sandbox, global)
+    // console is non-enumerable in node v10 and above
+    sandbox.console = global.console
+    // process is non-enumerable in node v12 and above
+    sandbox.process = global.process
     sandbox.require = requireLike(_filename)
   }
 

test.js

@@ -27,4 +27,8 @@ assert.throws(function () {
     _eval('require("fs")')
 })
 
+// Verify that the console is available when globals are passed
+res = _eval('exports.x = console', true)
+assert.deepEqual(res.x, console)
+
 console.log('All tests passed')