梁美英 / programming · Files

var pIE            = require('./_object-pie')
  , createDesc     = require('./_property-desc')
  , toIObject      = require('./_to-iobject')
  , toPrimitive    = require('./_to-primitive')
  , has            = require('./_has')
  , IE8_DOM_DEFINE = require('./_ie8-dom-define')
  , gOPD           = Object.getOwnPropertyDescriptor;

exports.f = require('./_descriptors') ? gOPD : function getOwnPropertyDescriptor(O, P){
  O = toIObject(O);
  P = toPrimitive(P, true);
  if(IE8_DOM_DEFINE)try {
    return gOPD(O, P);
  } catch(e){ /* empty */ }
  if(has(O, P))return createDesc(!pIE.f.call(O, P), O[P]);
};