chris
746868d720
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gopd 
Object.getOwnPropertyDescriptor, but accounts for IE's broken implementation.
Usage
var gOPD = require('gopd');
var assert = require('assert');
if (gOPD) {
assert.equal(typeof gOPD, 'function', 'descriptors supported');
// use gOPD like Object.getOwnPropertyDescriptor here
} else {
assert.ok(!gOPD, 'descriptors not supported');
}