es-shimsdunder-proto 
If available, the Object.prototype.__proto__ accessor and mutator, call-bound.
Getting started
npm install --save dunder-proto
Usage/Examples
const assert = require('assert');
const getDunder = require('dunder-proto/get');
const setDunder = require('dunder-proto/set');
const obj = {};
assert.equal('toString' in obj, true);
assert.equal(getDunder(obj), Object.prototype);
setDunder(obj, null);
assert.equal('toString' in obj, false);
assert.equal(getDunder(obj), null);
Tests
Clone the repo, npm install, and run npm test