Object.create wrapper with shorter property descriptor syntax and graceful handling for browsers not supporting it

ObjectCreate.js

function ObjectCreate(proto, properties) {
    var propDesc = {}, p, pd, pdStr, ES5 = !!(Object.create && Object.defineProperties);
    if (!ES5) {
        var F = function() {};
        F.prototype = proto;
        var o = new F();
    }
    for (p in properties) {
        pd = properties[p], pdStr = pd.pd.toLowerCase();
        if (ES5) {
            propDesc[p] = {
                value: pd.value,
                writable: pdStr.indexOf('w')>=0,
                enumerable: pdStr.indexOf('e')>=0,
                configurable: pdStr.indexOf('c')>=0
            };
        }
        else {
            o[p] = pd.value
        }
    }
    
    return ES5 ? Object.create(proto, propDesc) : o;

}

You asked on twitter. No problems, one suggestion:

        propDesc[p] = {
            value: pd.value,
            writable: pdStr.indexOf('w') >= 0,
            enumerable: pdStr.indexOf('e') >= 0,
            configurable: pdStr.indexOf('c' )>= 0
       }

Performance is not an issue until profiling says so but this seems cleaner and it will make one "hidden class" or "inferred type" instead of several for the 'wec' combinations actually used.

/be