A JSONP mixin for Lodash

example.js

_.jsonp('https://api.ipify.org/?format=jsonp', function(err, value){
  console.log(err || value);
});

lodash_jsonp.js

_.mixin({
  "jsonp": function(url, cb, receiverParameterName){

    var receiverName = _(_.range(10)).map(_.partial(_.sample,"abcdefghijklmnopqrstuvexyzABCDEFGHIJKLMNOPRQAT",1)).join(''),
        urlSplit = url.split('?'),
        cbWrapper = _.once(_.flow(cb || _.noop, function(){ window[receiverName] = undefined; }));

    window[receiverName] = _.partial(cbWrapper, null);
    setTimeout(_.partial(cbWrapper, new Error('Connection timed out')), 3000);

    var script = document.createElement('script');
    script.src = [urlSplit.shift()]
        .concat(
            urlSplit
              .map(function(str){ return str.split('&') })
              .concat([receiverParameterName || "callback", receiverName].join('='))
              .join('&')
        ).join('?');
    
    document.querySelector('body').appendChild(script);
  }
});