trotzig/diffux

define([
    "../core",
    "../ajax"
], function( jQuery ) {

// Install script dataType
jQuery.ajaxSetup({
    accepts: {
        script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
    },
    contents: {
        script: /(?:java|ecma)script/
    },
    converters: {
        "text script": function( text ) {
            jQuery.globalEval( text );
            return text;
        }
    }
});

// Handle cache's special case and crossDomain
jQuery.ajaxPrefilter( "script", function( s ) {
    if ( s.cache === undefined ) {
        s.cache = false;
    }
    if ( s.crossDomain ) {
        s.type = "GET";
    }
});

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {
    // This transport only deals with cross domain requests
    if ( s.crossDomain ) {
        var script, callback;
        return {
            send: function( _, complete ) {
                script = jQuery("<script>").prop({
                    async: true,
                    charset: s.scriptCharset,
                    src: s.url
                }).on(
                    "load error",
                    callback = function( evt ) {
                        script.remove();
                        callback = null;
                        if ( evt ) {
                            complete( evt.type === "error" ? 404 : 200, evt.type );
                        }
                    }
                );
                document.head.appendChild( script[ 0 ] );
            },
            abort: function() {
                if ( callback ) {
                    callback();
                }
            }
        };
    }
});

});