Conflicting Var-Recorder and the Live-Programming plugin

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#### Error

Printing the following code in a Workspace results in unexpected behavior:

```JavaScript
var array = [1,2,3]
debugger
array = []
debugger
array
```

The above code, executed in one go, evaluates to `[1, 2, 3]`. However it should evaluate to an empty array.

Executing the code line-by-line results in the expected bahavior.

#### Possible Explanation

The issue may result from the interaction of two babel plugins, the Var-Recorder and the Live-Programming plugin, inside a workspace.

```JavaScript
(function(System, SystemJS) {System.register([], function (_export, _context) {
"use strict";

return {
setters: [],
execute: function () {
var __global_this__ = window.__pluginDoitThisRefs__["efafc263-5f9e-447b-aa34-68ee3ed50caf/"];
var array = [1, 2, 3];
_recorder_.undefined.array = array;
debugger;
_recorder_.undefined.array = [];
debugger;
const __result__ = array;

_export("__result__", __result__);
}
};
});
})(System, System);
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```

Executing both plugins leads the Live-Programming plugin to not use the rewritten value, but its original un-proxied reference.

Also notice the `undefined` module name resulting from evaluating the script inside a workspace. I did not yet checked for similar behavior inside a named js-module.

#### Possible Solutions

Rewriting both aspects in one go might remove this issue.
If not, the Live-Programming plugin should be applied only after the Var-Recorder.

#### Similar Issues

#257

Reproduce the provided JavaScript snippet by executing it in a workspace, then inspect the interaction between the Var-Recorder and Live-Programming plugins. Verify that the final result is an empty array and investigate the reported undefined workspace module name; done means both behaviors are corrected without regressing line-by-line execution.

Written by the indexing model from the issue text.