If available, the Object.prototype.__proto__ accessor and mutator, call-bound.

npm install --save dunder-proto

Create val
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);

Clone the repo, npm install, and run npm test