dist/ax5core.js
function hasProperty(obj, propName) {
        return obj != null && (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && propName in obj;
    }
function hasProperty(obj, propName) {
        return obj != null && (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && propName in obj;
    }
function hasProperty ( obj , propName ) { return obj != null && ( typeof obj === 'undefined' ? 'undefined' : _typeof ( obj ) ) === 'object' && propName in obj ; }
Null safe way of checking whether or not an object,
including its prototype, has a given property
Null safe way of checking whether or not an object including its prototype has a given property