text: var anObject = require('./_an-object');
  var IE8_DOM_DEFINE = require('./_ie8-dom-define');
  var toPrimitive = require('./_to-primitive');
  var dP = Object.defineProperty;
  
  exports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) {
    anObject(O);
    P = toPrimitive(P, true);
    anObject(Attributes);
    if (IE8_DOM_DEFINE) try {
      return dP(O, P, Attributes);
    } catch (e) { /* empty */ }
    if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
    if ('value' in Attributes) O[P] = Attributes.value;
    return O;
  };
  