Wrapper for Logging service calls

loggerWrapper.js

let wrapper = function (bb, context) {
  this.doWrap(bb, context);
};

wrapper.prototype.doWrap = function(bb, context) {
  for(let key in bb){
    if(typeof bb[key] === 'function') {
      wrapper.prototype[key] = function() {
        console.log('before', context); 
        bb[key].apply(null,arguments);
        console.log('after', context); 
      };
    } else {
       wrapper.prototype[key] =  bb[key];
    }
  }
}