source: Dev/trunk/src/client/dojo/dojo.js @ 493

(function(
        userConfig,
        defaultConfig
){
        // summary:
        //              This is the "source loader" and is the entry point for Dojo during development. You may also load Dojo with
        //              any AMD-compliant loader via the package main module dojo/main.
        // description:
        //              This is the "source loader" for Dojo. It provides an AMD-compliant loader that can be configured
        //              to operate in either synchronous or asynchronous modes. After the loader is defined, dojo is loaded
        //              IAW the package main module dojo/main. In the event you wish to use a foreign loader, you may load dojo as a package
        //              via the package main module dojo/main and this loader is not required; see dojo/package.json for details.
        //
        //              In order to keep compatibility with the v1.x line, this loader includes additional machinery that enables
        //              the dojo.provide, dojo.require et al API. This machinery is loaded by default, but may be dynamically removed
        //              via the has.js API and statically removed via the build system.
        //
        //              This loader includes sniffing machinery to determine the environment; the following environments are supported:
        //
        //              - browser
        //              - node.js
        //              - rhino
        //
        //              This is the so-called "source loader". As such, it includes many optional features that may be discarded by
        //              building a customized version with the build system.

        // Design and Implementation Notes
        //
        // This is a dojo-specific adaption of bdLoad, donated to the dojo foundation by Altoviso LLC.
        //
        // This function defines an AMD-compliant (http://wiki.commonjs.org/wiki/Modules/AsynchronousDefinition)
        // loader that can be configured to operate in either synchronous or asynchronous modes.
        //
        // Since this machinery implements a loader, it does not have the luxury of using a load system and/or
        // leveraging a utility library. This results in an unpleasantly long file; here is a road map of the contents:
        //
        //       1. Small library for use implementing the loader.
        //       2. Define the has.js API; this is used throughout the loader to bracket features.
        //       3. Define the node.js and rhino sniffs and sniff.
        //       4. Define the loader's data.
        //       5. Define the configuration machinery.
        //       6. Define the script element sniffing machinery and sniff for configuration data.
        //       7. Configure the loader IAW the provided user, default, and sniffing data.
        //       8. Define the global require function.
        //       9. Define the module resolution machinery.
        //      10. Define the module and plugin module definition machinery
        //      11. Define the script injection machinery.
        //      12. Define the window load detection.
        //      13. Define the logging API.
        //      14. Define the tracing API.
        //      16. Define the AMD define function.
        //      17. Define the dojo v1.x provide/require machinery--so called "legacy" modes.
        //      18. Publish global variables.
        //
        // Language and Acronyms and Idioms
        //
        // moduleId: a CJS module identifier, (used for public APIs)
        // mid: moduleId (used internally)
        // packageId: a package identifier (used for public APIs)
        // pid: packageId (used internally); the implied system or default package has pid===""
        // pack: package is used internally to reference a package object (since javascript has reserved words including "package")
        // prid: plugin resource identifier
        // The integer constant 1 is used in place of true and 0 in place of false.

        // define a minimal library to help build the loader
        var     noop = function(){
                },

                isEmpty = function(it){
                        for(var p in it){
                                return 0;
                        }
                        return 1;
                },

                toString = {}.toString,

                isFunction = function(it){
                        return toString.call(it) == "[object Function]";
                },

                isString = function(it){
                        return toString.call(it) == "[object String]";
                },

                isArray = function(it){
                        return toString.call(it) == "[object Array]";
                },

                forEach = function(vector, callback){
                        if(vector){
                                for(var i = 0; i < vector.length;){
                                        callback(vector[i++]);
                                }
                        }
                },

                mix = function(dest, src){
                        for(var p in src){
                                dest[p] = src[p];
                        }
                        return dest;
                },

                makeError = function(error, info){
                        return mix(new Error(error), {src:"dojoLoader", info:info});
                },

                uidSeed = 1,

                uid = function(){
                        // Returns a unique identifier (within the lifetime of the document) of the form /_d+/.
                        return "_" + uidSeed++;
                },

                // FIXME: how to doc window.require() api

                // this will be the global require function; define it immediately so we can start hanging things off of it
                req = function(
                        config,           //(object, optional) hash of configuration properties
                        dependencies, //(array of commonjs.moduleId, optional) list of modules to be loaded before applying callback
                        callback          //(function, optional) lambda expression to apply to module values implied by dependencies
                ){
                        return contextRequire(config, dependencies, callback, 0, req);
                },

                // the loader uses the has.js API to control feature inclusion/exclusion; define then use throughout
                global = this,

                doc = global.document,

                element = doc && doc.createElement("DiV"),

                has = req.has = function(name){
                        return isFunction(hasCache[name]) ? (hasCache[name] = hasCache[name](global, doc, element)) : hasCache[name];
                },

                hasCache = has.cache = defaultConfig.hasCache;

        has.add = function(name, test, now, force){
                (hasCache[name]===undefined || force) && (hasCache[name] = test);
                return now && has(name);
        };

        has.add("host-node", userConfig.has && "host-node" in userConfig.has ?
                userConfig.has["host-node"] :
                (typeof process == "object" && process.versions && process.versions.node && process.versions.v8));
        if(has("host-node")){
                // fixup the default config for node.js environment
                require("./_base/configNode.js").config(defaultConfig);
                // remember node's require (with respect to baseUrl==dojo's root)
                defaultConfig.loaderPatch.nodeRequire = require;
        }

        has.add("host-rhino", userConfig.has && "host-rhino" in userConfig.has ?
                userConfig.has["host-rhino"] :
                (typeof load == "function" && (typeof Packages == "function" || typeof Packages == "object")));
        if(has("host-rhino")){
                // owing to rhino's lame feature that hides the source of the script, give the user a way to specify the baseUrl...
                for(var baseUrl = userConfig.baseUrl || ".", arg, rhinoArgs = this.arguments, i = 0; i < rhinoArgs.length;){
                        arg = (rhinoArgs[i++] + "").split("=");
                        if(arg[0] == "baseUrl"){
                                baseUrl = arg[1];
                                break;
                        }
                }
                load(baseUrl + "/_base/configRhino.js");
                rhinoDojoConfig(defaultConfig, baseUrl, rhinoArgs);
        }

        // userConfig has tests override defaultConfig has tests; do this after the environment detection because
        // the environment detection usually sets some has feature values in the hasCache.
        for(var p in userConfig.has){
                has.add(p, userConfig.has[p], 0, 1);
        }

        //
        // define the loader data
        //

        // the loader will use these like symbols if the loader has the traceApi; otherwise
        // define magic numbers so that modules can be provided as part of defaultConfig
        var     requested = 1,
                arrived = 2,
                nonmodule = 3,
                executing = 4,
                executed = 5;

        if(has("dojo-trace-api")){
                // these make debugging nice; but using strings for symbols is a gross rookie error; don't do it for production code
                requested = "requested";
                arrived = "arrived";
                nonmodule = "not-a-module";
                executing = "executing";
                executed = "executed";
        }

        var legacyMode = 0,
                sync = "sync",
                xd = "xd",
                syncExecStack = [],
                dojoRequirePlugin = 0,
                checkDojoRequirePlugin = noop,
                transformToAmd = noop,
                getXhr;
        if(has("dojo-sync-loader")){
                req.isXdUrl = noop;

                req.initSyncLoader = function(dojoRequirePlugin_, checkDojoRequirePlugin_, transformToAmd_){
                        // the first dojo/_base/loader loaded gets to define these variables; they are designed to work
                        // in the presence of zero to many mapped dojo/_base/loaders
                        if(!dojoRequirePlugin){
                                dojoRequirePlugin = dojoRequirePlugin_;
                                checkDojoRequirePlugin = checkDojoRequirePlugin_;
                                transformToAmd = transformToAmd_;
                        }

                        return {
                                sync:sync,
                                requested:requested,
                                arrived:arrived,
                                nonmodule:nonmodule,
                                executing:executing,
                                executed:executed,
                                syncExecStack:syncExecStack,
                                modules:modules,
                                execQ:execQ,
                                getModule:getModule,
                                injectModule:injectModule,
                                setArrived:setArrived,
                                signal:signal,
                                finishExec:finishExec,
                                execModule:execModule,
                                dojoRequirePlugin:dojoRequirePlugin,
                                getLegacyMode:function(){return legacyMode;},
                                guardCheckComplete:guardCheckComplete
                        };
                };

                if(has("dom")){
                        // in legacy sync mode, the loader needs a minimal XHR library

                        var locationProtocol = location.protocol,
                                locationHost = location.host;
                        req.isXdUrl = function(url){
                                if(/^\./.test(url)){
                                        // begins with a dot is always relative to page URL; therefore not xdomain
                                        return false;
                                }
                                if(/^\/\//.test(url)){
                                        // for v1.6- backcompat, url starting with // indicates xdomain
                                        return true;
                                }
                                // get protocol and host
                                // \/+ takes care of the typical file protocol that looks like file:///drive/path/to/file
                                // locationHost is falsy if file protocol => if locationProtocol matches and is "file:", || will return false
                                var match = url.match(/^([^\/\:]+\:)\/+([^\/]+)/);
                                return match && (match[1] != locationProtocol || (locationHost && match[2] != locationHost));
                        };


                        // note: to get the file:// protocol to work in FF, you must set security.fileuri.strict_origin_policy to false in about:config
                        has.add("dojo-xhr-factory", 1);
                        has.add("dojo-force-activex-xhr", has("host-browser") && !doc.addEventListener && window.location.protocol == "file:");
                        has.add("native-xhr", typeof XMLHttpRequest != "undefined");
                        if(has("native-xhr") && !has("dojo-force-activex-xhr")){
                                getXhr = function(){
                                        return new XMLHttpRequest();
                                };
                        }else{
                                // if in the browser an old IE; find an xhr
                                for(var XMLHTTP_PROGIDS = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'], progid, i = 0; i < 3;){
                                        try{
                                                progid = XMLHTTP_PROGIDS[i++];
                                                if(new ActiveXObject(progid)){
                                                        // this progid works; therefore, use it from now on
                                                        break;
                                                }
                                        }catch(e){
                                                // squelch; we're just trying to find a good ActiveX progid
                                                // if they all fail, then progid ends up as the last attempt and that will signal the error
                                                // the first time the client actually tries to exec an xhr
                                        }
                                }
                                getXhr = function(){
                                        return new ActiveXObject(progid);
                                };
                        }
                        req.getXhr = getXhr;

                        has.add("dojo-gettext-api", 1);
                        req.getText = function(url, async, onLoad){
                                var xhr = getXhr();
                                xhr.open('GET', fixupUrl(url), false);
                                xhr.send(null);
                                if(xhr.status == 200 || (!location.host && !xhr.status)){
                                        if(onLoad){
                                                onLoad(xhr.responseText, async);
                                        }
                                }else{
                                        throw makeError("xhrFailed", xhr.status);
                                }
                                return xhr.responseText;
                        };
                }
        }else{
                req.async = 1;
        }

        //
        // loader eval
        //
        var eval_ =
                // use the function constructor so our eval is scoped close to (but not in) in the global space with minimal pollution
                new Function('return eval(arguments[0]);');

        req.eval =
                function(text, hint){
                        return eval_(text + "\r\n////@ sourceURL=" + hint);
                };

        //
        // loader micro events API
        //
        var listenerQueues = {},
                error = "error",
                signal = req.signal = function(type, args){
                        var queue = listenerQueues[type];
                        // notice we run a copy of the queue; this allows listeners to add/remove
                        // other listeners without affecting this particular signal
                        forEach(queue && queue.slice(0), function(listener){
                                listener.apply(null, isArray(args) ? args : [args]);
                        });
                },
                on = req.on = function(type, listener){
                        // notice a queue is not created until a client actually connects
                        var queue = listenerQueues[type] || (listenerQueues[type] = []);
                        queue.push(listener);
                        return {
                                remove:function(){
                                        for(var i = 0; i<queue.length; i++){
                                                if(queue[i]===listener){
                                                        queue.splice(i, 1);
                                                        return;
                                                }
                                        }
                                }
                        };
                };

        // configuration machinery; with an optimized/built defaultConfig, all configuration machinery can be discarded
        // lexical variables hold key loader data structures to help with minification; these may be completely,
        // one-time initialized by defaultConfig for optimized/built versions
        var
                aliases
                        // a vector of pairs of [regexs or string, replacement] => (alias, actual)
                        = [],

                paths
                        // CommonJS paths
                        = {},

                pathsMapProg
                        // list of (from-path, to-path, regex, length) derived from paths;
                        // a "program" to apply paths; see computeMapProg
                        = [],

                packs
                        // a map from packageId to package configuration object; see fixupPackageInfo
                        = {},

                map = req.map
                        // AMD map config variable; dojo/_base/kernel needs req.map to figure out the scope map
                        = {},

                mapProgs
                        // vector of quads as described by computeMapProg; map-key is AMD map key, map-value is AMD map value
                        = [],

                modules
                        // A hash:(mid) --> (module-object) the module namespace
                        //
                        // pid: the package identifier to which the module belongs (e.g., "dojo"); "" indicates the system or default package
                        // mid: the fully-resolved (i.e., mappings have been applied) module identifier without the package identifier (e.g., "dojo/io/script")
                        // url: the URL from which the module was retrieved
                        // pack: the package object of the package to which the module belongs
                        // executed: 0 => not executed; executing => in the process of traversing deps and running factory; executed => factory has been executed
                        // deps: the dependency vector for this module (vector of modules objects)
                        // def: the factory for this module
                        // result: the result of the running the factory for this module
                        // injected: (0 | requested | arrived) the status of the module; nonmodule means the resource did not call define
                        // load: plugin load function; applicable only for plugins
                        //
                        // Modules go through several phases in creation:
                        //
                        // 1. Requested: some other module's definition or a require application contained the requested module in
                        //        its dependency vector or executing code explicitly demands a module via req.require.
                        //
                        // 2. Injected: a script element has been appended to the insert-point element demanding the resource implied by the URL
                        //
                        // 3. Loaded: the resource injected in [2] has been evaluated.
                        //
                        // 4. Defined: the resource contained a define statement that advised the loader about the module. Notice that some
                        //        resources may just contain a bundle of code and never formally define a module via define
                        //
                        // 5. Evaluated: the module was defined via define and the loader has evaluated the factory and computed a result.
                        = {},

                cacheBust
                        // query string to append to module URLs to bust browser cache
                        = "",

                cache
                        // hash:(mid | url)-->(function | string)
                        //
                        // A cache of resources. The resources arrive via a config.cache object, which is a hash from either mid --> function or
                        // url --> string. The url key is distinguished from the mid key by always containing the prefix "url:". url keys as provided
                        // by config.cache always have a string value that represents the contents of the resource at the given url. mid keys as provided
                        // by configl.cache always have a function value that causes the same code to execute as if the module was script injected.
                        //
                        // Both kinds of key-value pairs are entered into cache via the function consumePendingCache, which may relocate keys as given
                        // by any mappings *iff* the config.cache was received as part of a module resource request.
                        //
                        // Further, for mid keys, the implied url is computed and the value is entered into that key as well. This allows mapped modules
                        // to retrieve cached items that may have arrived consequent to another namespace.
                        //
                         = {},

                urlKeyPrefix
                        // the prefix to prepend to a URL key in the cache.
                        = "url:",

                pendingCacheInsert
                        // hash:(mid)-->(function)
                        //
                        // Gives a set of cache modules pending entry into cache. When cached modules are published to the loader, they are
                        // entered into pendingCacheInsert; modules are then pressed into cache upon (1) AMD define or (2) upon receiving another
                        // independent set of cached modules. (1) is the usual case, and this case allows normalizing mids given in the pending
                        // cache for the local configuration, possibly relocating modules.
                         = {},

                dojoSniffConfig
                        // map of configuration variables
                        // give the data-dojo-config as sniffed from the document (if any)
                        = {},

                insertPointSibling
                        // the nodes used to locate where scripts are injected into the document
                        = 0;

        if(has("dojo-config-api")){
                var consumePendingCacheInsert = function(referenceModule){
                                var p, item, match, now, m;
                                for(p in pendingCacheInsert){
                                        item = pendingCacheInsert[p];
                                        match = p.match(/^url\:(.+)/);
                                        if(match){
                                                cache[urlKeyPrefix + toUrl(match[1], referenceModule)] =  item;
                                        }else if(p=="*now"){
                                                now = item;
                                        }else if(p!="*noref"){
                                                m = getModuleInfo(p, referenceModule, true);
                                                cache[m.mid] = cache[urlKeyPrefix + m.url] = item;
                                        }
                                }
                                if(now){
                                        now(createRequire(referenceModule));
                                }
                                pendingCacheInsert = {};
                        },

                        escapeString = function(s){
                                return s.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, function(c){ return "\\" + c; });
                        },

                        computeMapProg = function(map, dest){
                                // This routine takes a map as represented by a JavaScript object and initializes dest, a vector of
                                // quads of (map-key, map-value, refex-for-map-key, length-of-map-key), sorted decreasing by length-
                                // of-map-key. The regex looks for the map-key followed by either "/" or end-of-string at the beginning
                                // of a the search source. Notice the map-value is irrelevant to the algorithm
                                dest.splice(0, dest.length);
                                for(var p in map){
                                        dest.push([
                                                p,
                                                map[p],
                                                new RegExp("^" + escapeString(p) + "(\/|$)"),
                                                p.length]);
                                }
                                dest.sort(function(lhs, rhs){ return rhs[3] - lhs[3]; });
                                return dest;
                        },

                        computeAliases = function(config, dest){
                                forEach(config, function(pair){
                                        // take a fixed-up copy...
                                        dest.push([isString(pair[0]) ? new RegExp("^" + escapeString(pair[0]) + "$") : pair[0], pair[1]]);
                                });
                        },


                        fixupPackageInfo = function(packageInfo){
                                // calculate the precise (name, location, main, mappings) for a package
                                var name = packageInfo.name;
                                if(!name){
                                        // packageInfo must be a string that gives the name
                                        name = packageInfo;
                                        packageInfo = {name:name};
                                }
                                packageInfo = mix({main:"main"}, packageInfo);
                                packageInfo.location = packageInfo.location ? packageInfo.location : name;

                                // packageMap is deprecated in favor of AMD map
                                if(packageInfo.packageMap){
                                        map[name] = packageInfo.packageMap;
                                }

                                if(!packageInfo.main.indexOf("./")){
                                        packageInfo.main = packageInfo.main.substring(2);
                                }

                                // now that we've got a fully-resolved package object, push it into the configuration
                                packs[name] = packageInfo;
                        },

                        delayedModuleConfig
                                // module config cannot be consumed until the loader is completely initialized; therefore, all
                                // module config detected during booting is memorized and applied at the end of loader initialization
                                // TODO: this is a bit of a kludge; all config should be moved to end of loader initialization, but
                                // we'll delay this chore and do it with a final loader 1.x cleanup after the 2.x loader prototyping is complete
                                = [],


                        config = function(config, booting, referenceModule){
                                for(var p in config){
                                        if(p=="waitSeconds"){
                                                req.waitms = (config[p] || 0) * 1000;
                                        }
                                        if(p=="cacheBust"){
                                                cacheBust = config[p] ? (isString(config[p]) ? config[p] : (new Date()).getTime() + "") : "";
                                        }
                                        if(p=="baseUrl" || p=="combo"){
                                                req[p] = config[p];
                                        }
                                        if(has("dojo-sync-loader") && p=="async"){
                                                // falsy or "sync" => legacy sync loader
                                                // "xd" => sync but loading xdomain tree and therefore loading asynchronously (not configurable, set automatically by the loader)
                                                // "legacyAsync" => permanently in "xd" by choice
                                                // "debugAtAllCosts" => trying to load everything via script injection (not implemented)
                                                // otherwise, must be truthy => AMD
                                                // legacyMode: sync | legacyAsync | xd | false
                                                var mode = config[p];
                                                req.legacyMode = legacyMode = (isString(mode) && /sync|legacyAsync/.test(mode) ? mode : (!mode ? sync : false));
                                                req.async = !legacyMode;
                                        }
                                        if(config[p]!==hasCache){
                                                // accumulate raw config info for client apps which can use this to pass their own config
                                                req.rawConfig[p] = config[p];
                                                p!="has" && has.add("config-"+p, config[p], 0, booting);
                                        }
                                }

                                // make sure baseUrl exists
                                if(!req.baseUrl){
                                        req.baseUrl = "./";
                                }
                                // make sure baseUrl ends with a slash
                                if(!/\/$/.test(req.baseUrl)){
                                        req.baseUrl += "/";
                                }

                                // now do the special work for has, packages, packagePaths, paths, aliases, and cache

                                for(p in config.has){
                                        has.add(p, config.has[p], 0, booting);
                                }

                                // for each package found in any packages config item, augment the packs map owned by the loader
                                forEach(config.packages, fixupPackageInfo);

                                // for each packagePath found in any packagePaths config item, augment the packageConfig
                                // packagePaths is deprecated; remove in 2.0
                                for(baseUrl in config.packagePaths){
                                        forEach(config.packagePaths[baseUrl], function(packageInfo){
                                                var location = baseUrl + "/" + packageInfo;
                                                if(isString(packageInfo)){
                                                        packageInfo = {name:packageInfo};
                                                }
                                                packageInfo.location = location;
                                                fixupPackageInfo(packageInfo);
                                        });
                                }

                                // notice that computeMapProg treats the dest as a reference; therefore, if/when that variable
                                // is published (see dojo-publish-privates), the published variable will always hold a valid value.

                                // this must come after all package processing since package processing may mutate map
                                computeMapProg(mix(map, config.map), mapProgs);
                                forEach(mapProgs, function(item){
                                        item[1] = computeMapProg(item[1], []);
                                        if(item[0]=="*"){
                                                mapProgs.star = item;
                                        }
                                });

                                // push in any paths and recompute the internal pathmap
                                computeMapProg(mix(paths, config.paths), pathsMapProg);

                                // aliases
                                computeAliases(config.aliases, aliases);

                                if(booting){
                                        delayedModuleConfig.push({config:config.config});
                                }else{
                                        for(p in config.config){
                                                var module = getModule(p, referenceModule);
                                                module.config = mix(module.config || {}, config.config[p]);
                                        }
                                }

                                // push in any new cache values
                                if(config.cache){
                                        consumePendingCacheInsert();
                                        pendingCacheInsert = config.cache;
                                        if(config.cache["*noref"]){
                                                consumePendingCacheInsert();
                                        }
                                }

                                signal("config", [config, req.rawConfig]);
                        };

                //
                // execute the various sniffs; userConfig can override and value
                //

                if(has("dojo-cdn") || has("dojo-sniff")){
                        // the sniff regex looks for a src attribute ending in dojo.js, optionally preceded with a path.
                        // match[3] returns the path to dojo.js (if any) without the trailing slash. This is used for the
                        // dojo location on CDN deployments and baseUrl when either/both of these are not provided
                        // explicitly in the config data; this is the 1.6- behavior.

                        var scripts = doc.getElementsByTagName("script"),
                                i = 0,
                                script, dojoDir, src, match;
                        while(i < scripts.length){
                                script = scripts[i++];
                                if((src = script.getAttribute("src")) && (match = src.match(/(((.*)\/)|^)dojo\.js(\W|$)/i))){
                                        // sniff dojoDir and baseUrl
                                        dojoDir = match[3] || "";
                                        defaultConfig.baseUrl = defaultConfig.baseUrl || dojoDir;

                                        // remember an insertPointSibling
                                        insertPointSibling = script;
                                }

                                // sniff configuration on attribute in script element
                                if((src = (script.getAttribute("data-dojo-config") || script.getAttribute("djConfig")))){
                                        dojoSniffConfig = req.eval("({ " + src + " })", "data-dojo-config");

                                        // remember an insertPointSibling
                                        insertPointSibling = script;
                                }

                                // sniff requirejs attribute
                                if(has("dojo-requirejs-api")){
                                        if((src = script.getAttribute("data-main"))){
                                                dojoSniffConfig.deps = dojoSniffConfig.deps || [src];
                                        }
                                }
                        }
                }

                if(has("dojo-test-sniff")){
                        // pass down doh.testConfig from parent as if it were a data-dojo-config
                        try{
                                if(window.parent != window && window.parent.require){
                                        var doh = window.parent.require("doh");
                                        doh && mix(dojoSniffConfig, doh.testConfig);
                                }
                        }catch(e){}
                }

                // configure the loader; let the user override defaults
                req.rawConfig = {};
                config(defaultConfig, 1);

                // do this before setting userConfig/sniffConfig to allow userConfig/sniff overrides
                if(has("dojo-cdn")){
                        packs.dojo.location = dojoDir;
                        if(dojoDir){
                                dojoDir += "/";
                        }
                        packs.dijit.location = dojoDir + "../dijit/";
                        packs.dojox.location = dojoDir + "../dojox/";
                }

                config(userConfig, 1);
                config(dojoSniffConfig, 1);

        }else{
                // no config API, assume defaultConfig has everything the loader needs...for the entire lifetime of the application
                paths = defaultConfig.paths;
                pathsMapProg = defaultConfig.pathsMapProg;
                packs = defaultConfig.packs;
                aliases = defaultConfig.aliases;
                mapProgs = defaultConfig.mapProgs;
                modules = defaultConfig.modules;
                cache = defaultConfig.cache;
                cacheBust = defaultConfig.cacheBust;

                // remember the default config for other processes (e.g., dojo/config)
                req.rawConfig = defaultConfig;
        }


        if(has("dojo-combo-api")){
                req.combo = req.combo || {add:noop};
                var     comboPending = 0,
                        combosPending = [],
                        comboPendingTimer = null;
        }


        // build the loader machinery iaw configuration, including has feature tests
        var     injectDependencies = function(module){
                        // checkComplete!=0 holds the idle signal; we're not idle if we're injecting dependencies
                        guardCheckComplete(function(){
                                forEach(module.deps, injectModule);
                                if(has("dojo-combo-api") && comboPending && !comboPendingTimer){
                                        comboPendingTimer = setTimeout(function() {
                                                comboPending = 0;
                                                comboPendingTimer = null;
                                                req.combo.done(function(mids, url) {
                                                        var onLoadCallback= function(){
                                                                // defQ is a vector of module definitions 1-to-1, onto mids
                                                                runDefQ(0, mids);
                                                                checkComplete();
                                                        };
                                                        combosPending.push(mids);
                                                        injectingModule = mids;
                                                        req.injectUrl(url, onLoadCallback, mids);
                                                        injectingModule = 0;
                                                }, req);
                                        }, 0);
                                }
                        });
                },

                contextRequire = function(a1, a2, a3, referenceModule, contextRequire){
                        var module, syntheticMid;
                        if(isString(a1)){
                                // signature is (moduleId)
                                module = getModule(a1, referenceModule, true);
                                if(module && module.executed){
                                        return module.result;
                                }
                                throw makeError("undefinedModule", a1);
                        }
                        if(!isArray(a1)){
                                // a1 is a configuration
                                config(a1, 0, referenceModule);

                                // juggle args; (a2, a3) may be (dependencies, callback)
                                a1 = a2;
                                a2 = a3;
                        }
                        if(isArray(a1)){
                                // signature is (requestList [,callback])
                                if(!a1.length){
                                        a2 && a2();
                                }else{
                                        syntheticMid = "require*" + uid();

                                        // resolve the request list with respect to the reference module
                                        for(var mid, deps = [], i = 0; i < a1.length;){
                                                mid = a1[i++];
                                                deps.push(getModule(mid, referenceModule));
                                        }

                                        // construct a synthetic module to control execution of the requestList, and, optionally, callback
                                        module = mix(makeModuleInfo("", syntheticMid, 0, ""), {
                                                injected: arrived,
                                                deps: deps,
                                                def: a2 || noop,
                                                require: referenceModule ? referenceModule.require : req,
                                                gc: 1 //garbage collect
                                        });
                                        modules[module.mid] = module;

                                        // checkComplete!=0 holds the idle signal; we're not idle if we're injecting dependencies
                                        injectDependencies(module);

                                        // try to immediately execute
                                        // if already traversing a factory tree, then strict causes circular dependency to abort the execution; maybe
                                        // it's possible to execute this require later after the current traversal completes and avoid the circular dependency.
                                        // ...but *always* insist on immediate in synch mode
                                        var strict = checkCompleteGuard && legacyMode!=sync;
                                        guardCheckComplete(function(){
                                                execModule(module, strict);
                                        });
                                        if(!module.executed){
                                                // some deps weren't on board or circular dependency detected and strict; therefore, push into the execQ
                                                execQ.push(module);
                                        }
                                        checkComplete();
                                }
                        }
                        return contextRequire;
                },

                createRequire = function(module){
                        if(!module){
                                return req;
                        }
                        var result = module.require;
                        if(!result){
                                result = function(a1, a2, a3){
                                        return contextRequire(a1, a2, a3, module, result);
                                };
                                module.require = mix(result, req);
                                result.module = module;
                                result.toUrl = function(name){
                                        return toUrl(name, module);
                                };
                                result.toAbsMid = function(mid){
                                        return toAbsMid(mid, module);
                                };
                                if(has("dojo-undef-api")){
                                        result.undef = function(mid){
                                                req.undef(mid, module);
                                        };
                                }
                                if(has("dojo-sync-loader")){
                                        result.syncLoadNls = function(mid){
                                                var nlsModuleInfo = getModuleInfo(mid, module),
                                                        nlsModule = modules[nlsModuleInfo.mid];
                                                if(!nlsModule || !nlsModule.executed){
                                                        cached = cache[nlsModuleInfo.mid] || cache[urlKeyPrefix + nlsModuleInfo.url];
                                                        if(cached){
                                                                evalModuleText(cached);
                                                                nlsModule = modules[nlsModuleInfo.mid];
                                                        }
                                                }
                                                return nlsModule && nlsModule.executed && nlsModule.result;
                                        };
                                }

                        }
                        return result;
                },

                execQ =
                        // The list of modules that need to be evaluated.
                        [],

                defQ =
                        // The queue of define arguments sent to loader.
                        [],

                waiting =
                        // The set of modules upon which the loader is waiting for definition to arrive
                        {},

                setRequested = function(module){
                        module.injected = requested;
                        waiting[module.mid] = 1;
                        if(module.url){
                                waiting[module.url] = module.pack || 1;
                        }
                        startTimer();
                },

                setArrived = function(module){
                        module.injected = arrived;
                        delete waiting[module.mid];
                        if(module.url){
                                delete waiting[module.url];
                        }
                        if(isEmpty(waiting)){
                                clearTimer();
                                has("dojo-sync-loader") && legacyMode==xd && (legacyMode = sync);
                        }
                },

                execComplete = req.idle =
                        // says the loader has completed (or not) its work
                        function(){
                                return !defQ.length && isEmpty(waiting) && !execQ.length && !checkCompleteGuard;
                        },

                runMapProg = function(targetMid, map){
                        // search for targetMid in map; return the map item if found; falsy otherwise
                        if(map){
                        for(var i = 0; i < map.length; i++){
                                if(map[i][2].test(targetMid)){
                                        return map[i];
                                }
                        }
                        }
                        return 0;
                },

                compactPath = function(path){
                        var result = [],
                                segment, lastSegment;
                        path = path.replace(/\\/g, '/').split('/');
                        while(path.length){
                                segment = path.shift();
                                if(segment==".." && result.length && lastSegment!=".."){
                                        result.pop();
                                        lastSegment = result[result.length - 1];
                                }else if(segment!="."){
                                        result.push(lastSegment= segment);
                                } // else ignore "."
                        }
                        return result.join("/");
                },

                makeModuleInfo = function(pid, mid, pack, url){
                        if(has("dojo-sync-loader")){
                                var xd= req.isXdUrl(url);
                                return {pid:pid, mid:mid, pack:pack, url:url, executed:0, def:0, isXd:xd, isAmd:!!(xd || (packs[pid] && packs[pid].isAmd))};
                        }else{
                                return {pid:pid, mid:mid, pack:pack, url:url, executed:0, def:0};
                        }
                },

                getModuleInfo_ = function(mid, referenceModule, packs, modules, baseUrl, mapProgs, pathsMapProg, aliases, alwaysCreate){
                        // arguments are passed instead of using lexical variables so that this function my be used independent of the loader (e.g., the builder)
                        // alwaysCreate is useful in this case so that getModuleInfo never returns references to real modules owned by the loader
                        var pid, pack, midInPackage, mapItem, url, result, isRelative, requestedMid;
                        requestedMid = mid;
                        isRelative = /^\./.test(mid);
                        if(/(^\/)|(\:)|(\.js$)/.test(mid) || (isRelative && !referenceModule)){
                                // absolute path or protocol of .js filetype, or relative path but no reference module and therefore relative to page
                                // whatever it is, it's not a module but just a URL of some sort
                                // note: pid===0 indicates the routine is returning an unmodified mid

                                return makeModuleInfo(0, mid, 0, mid);
                        }else{
                                // relative module ids are relative to the referenceModule; get rid of any dots
                                mid = compactPath(isRelative ? (referenceModule.mid + "/../" + mid) : mid);
                                if(/^\./.test(mid)){
                                        throw makeError("irrationalPath", mid);
                                }
                                // at this point, mid is an absolute mid

                                // map the mid
                                if(referenceModule){
                                        mapItem = runMapProg(referenceModule.mid, mapProgs);
                                }
                                mapItem = mapItem || mapProgs.star;
                                mapItem = mapItem && runMapProg(mid, mapItem[1]);

                                if(mapItem){
                                        mid = mapItem[1] + mid.substring(mapItem[3]);
                                        }

                                match = mid.match(/^([^\/]+)(\/(.+))?$/);
                                pid = match ? match[1] : "";
                                if((pack = packs[pid])){
                                        mid = pid + "/" + (midInPackage = (match[3] || pack.main));
                                }else{
                                        pid = "";
                                }

                                // search aliases
                                var candidateLength = 0,
                                        candidate = 0;
                                forEach(aliases, function(pair){
                                        var match = mid.match(pair[0]);
                                        if(match && match.length>candidateLength){
                                                candidate = isFunction(pair[1]) ? mid.replace(pair[0], pair[1]) : pair[1];
                                        }
                                });
                                if(candidate){
                                        return getModuleInfo_(candidate, 0, packs, modules, baseUrl, mapProgs, pathsMapProg, aliases, alwaysCreate);
                                }

                                result = modules[mid];
                                if(result){
                                        return alwaysCreate ? makeModuleInfo(result.pid, result.mid, result.pack, result.url) : modules[mid];
                                }
                        }
                        // get here iff the sought-after module does not yet exist; therefore, we need to compute the URL given the
                        // fully resolved (i.e., all relative indicators and package mapping resolved) module id

                        // note: pid!==0 indicates the routine is returning a url that has .js appended unmodified mid
                        mapItem = runMapProg(mid, pathsMapProg);
                        if(mapItem){
                                url = mapItem[1] + mid.substring(mapItem[3]);
                        }else if(pid){
                                url = pack.location + "/" + midInPackage;
                        }else if(has("config-tlmSiblingOfDojo")){
                                url = "../" + mid;
                        }else{
                                url = mid;
                        }
                        // if result is not absolute, add baseUrl
                        if(!(/(^\/)|(\:)/.test(url))){
                                url = baseUrl + url;
                        }
                        url += ".js";
                        return makeModuleInfo(pid, mid, pack, compactPath(url));
                },

                getModuleInfo = function(mid, referenceModule, fromPendingCache){
                        return getModuleInfo_(mid, referenceModule, packs, modules, req.baseUrl, fromPendingCache ? [] : mapProgs, fromPendingCache ? [] : pathsMapProg, fromPendingCache ? [] : aliases);
                },

                resolvePluginResourceId = function(plugin, prid, referenceModule){
                        return plugin.normalize ? plugin.normalize(prid, function(mid){return toAbsMid(mid, referenceModule);}) : toAbsMid(prid, referenceModule);
                },

                dynamicPluginUidGenerator = 0,

                getModule = function(mid, referenceModule, immediate){
                        // compute and optionally construct (if necessary) the module implied by the mid with respect to referenceModule
                        var match, plugin, prid, result;
                        match = mid.match(/^(.+?)\!(.*)$/);
                        if(match){
                                // name was <plugin-module>!<plugin-resource-id>
                                plugin = getModule(match[1], referenceModule, immediate);

                                if(has("dojo-sync-loader") && legacyMode == sync && !plugin.executed){
                                        injectModule(plugin);
                                        if(plugin.injected===arrived && !plugin.executed){
                                                guardCheckComplete(function(){
                                                        execModule(plugin);
                                                });
                                        }
                                        if(plugin.executed){
                                                promoteModuleToPlugin(plugin);
                                        }else{
                                                // we are in xdomain mode for some reason
                                                execQ.unshift(plugin);
                                        }
                                }



                                if(plugin.executed === executed && !plugin.load){
                                        // executed the module not knowing it was a plugin
                                        promoteModuleToPlugin(plugin);
                                }

                                // if the plugin has not been loaded, then can't resolve the prid and  must assume this plugin is dynamic until we find out otherwise
                                if(plugin.load){
                                        prid = resolvePluginResourceId(plugin, match[2], referenceModule);
                                        mid = (plugin.mid + "!" + (plugin.dynamic ? ++dynamicPluginUidGenerator + "!" : "") + prid);
                                }else{
                                        prid = match[2];
                                        mid = plugin.mid + "!" + (++dynamicPluginUidGenerator) + "!waitingForPlugin";
                                }
                                result = {plugin:plugin, mid:mid, req:createRequire(referenceModule), prid:prid};
                        }else{
                                result = getModuleInfo(mid, referenceModule);
                        }
                        return modules[result.mid] || (!immediate && (modules[result.mid] = result));
                },

                toAbsMid = req.toAbsMid = function(mid, referenceModule){
                        return getModuleInfo(mid, referenceModule).mid;
                },

                toUrl = req.toUrl = function(name, referenceModule){
                        var moduleInfo = getModuleInfo(name+"/x", referenceModule),
                                url= moduleInfo.url;
                        return fixupUrl(moduleInfo.pid===0 ?
                                // if pid===0, then name had a protocol or absolute path; either way, toUrl is the identify function in such cases
                                name :
                                // "/x.js" since getModuleInfo automatically appends ".js" and we appended "/x" to make name look like a module id
                                url.substring(0, url.length-5)
                        );
                },

                nonModuleProps = {
                        injected: arrived,
                        executed: executed,
                        def: nonmodule,
                        result: nonmodule
                },

                makeCjs = function(mid){
                        return modules[mid] = mix({mid:mid}, nonModuleProps);
                },

                cjsRequireModule = makeCjs("require"),
                cjsExportsModule = makeCjs("exports"),
                cjsModuleModule = makeCjs("module"),

                runFactory = function(module, args){
                        req.trace("loader-run-factory", [module.mid]);
                        var factory = module.def,
                                result;
                        has("dojo-sync-loader") && syncExecStack.unshift(module);
                        if(has("config-dojo-loader-catches")){
                                try{
                                        result= isFunction(factory) ? factory.apply(null, args) : factory;
                                }catch(e){
                                        signal(error, module.result = makeError("factoryThrew", [module, e]));
                                }
                        }else{
                                result= isFunction(factory) ? factory.apply(null, args) : factory;
                        }
                        module.result = result===undefined && module.cjs ? module.cjs.exports : result;
                        has("dojo-sync-loader") && syncExecStack.shift(module);
                },

                abortExec = {},

                defOrder = 0,

                promoteModuleToPlugin = function(pluginModule){
                        var plugin = pluginModule.result;
                        pluginModule.dynamic = plugin.dynamic;
                        pluginModule.normalize = plugin.normalize;
                        pluginModule.load = plugin.load;
                        return pluginModule;
                },

                resolvePluginLoadQ = function(plugin){
                        // plugins is a newly executed module that has a loadQ waiting to run

                        // step 1: traverse the loadQ and fixup the mid and prid; remember the map from original mid to new mid
                        // recall the original mid was created before the plugin was on board and therefore it was impossible to
                        // compute the final mid; accordingly, prid may or may not change, but the mid will definitely change
                        var map = {};
                        forEach(plugin.loadQ, function(pseudoPluginResource){
                                // manufacture and insert the real module in modules
                                var prid = resolvePluginResourceId(plugin, pseudoPluginResource.prid, pseudoPluginResource.req.module),
                                        mid = plugin.dynamic ? pseudoPluginResource.mid.replace(/waitingForPlugin$/, prid) : (plugin.mid + "!" + prid),
                                        pluginResource = mix(mix({}, pseudoPluginResource), {mid:mid, prid:prid, injected:0});
                                if(!modules[mid]){
                                        // create a new (the real) plugin resource and inject it normally now that the plugin is on board
                                        injectPlugin(modules[mid] = pluginResource);
                                } // else this was a duplicate request for the same (plugin, rid) for a nondynamic plugin

                                // pluginResource is really just a placeholder with the wrong mid (because we couldn't calculate it until the plugin was on board)
                                // mark is as arrived and delete it from modules; the real module was requested above
                                map[pseudoPluginResource.mid] = modules[mid];
                                setArrived(pseudoPluginResource);
                                delete modules[pseudoPluginResource.mid];
                        });
                        plugin.loadQ = 0;

                        // step2: replace all references to any placeholder modules with real modules
                        var substituteModules = function(module){
                                for(var replacement, deps = module.deps || [], i = 0; i<deps.length; i++){
                                        replacement = map[deps[i].mid];
                                        if(replacement){
                                                deps[i] = replacement;
                                        }
                                }
                        };
                        for(var p in modules){
                                substituteModules(modules[p]);
                        }
                        forEach(execQ, substituteModules);
                },

                finishExec = function(module){
                        req.trace("loader-finish-exec", [module.mid]);
                        module.executed = executed;
                        module.defOrder = defOrder++;
                        has("dojo-sync-loader") && forEach(module.provides, function(cb){ cb(); });
                        if(module.loadQ){
                                // the module was a plugin
                                promoteModuleToPlugin(module);
                                resolvePluginLoadQ(module);
                        }
                        // remove all occurrences of this module from the execQ
                        for(i = 0; i < execQ.length;){
                                if(execQ[i] === module){
                                        execQ.splice(i, 1);
                                }else{
                                        i++;
                                }
                        }
                        // delete references to synthetic modules
                        if (/^require\*/.test(module.mid)) {
                                delete modules[module.mid];
                        }
                },

                circleTrace = [],

                execModule = function(module, strict){
                        // run the dependency vector, then run the factory for module
                        if(module.executed === executing){
                                req.trace("loader-circular-dependency", [circleTrace.concat(module.mid).join("->")]);
                                return (!module.def || strict) ? abortExec :  (module.cjs && module.cjs.exports);
                        }
                        // at this point the module is either not executed or fully executed


                        if(!module.executed){
                                if(!module.def){
                                        return abortExec;
                                }
                                var mid = module.mid,
                                        deps = module.deps || [],
                                        arg, argResult,
                                        args = [],
                                        i = 0;

                                if(has("dojo-trace-api")){
                                        circleTrace.push(mid);
                                        req.trace("loader-exec-module", ["exec", circleTrace.length, mid]);
                                }

                                // for circular dependencies, assume the first module encountered was executed OK
                                // modules that circularly depend on a module that has not run its factory will get
                                // the pre-made cjs.exports===module.result. They can take a reference to this object and/or
                                // add properties to it. When the module finally runs its factory, the factory can
                                // read/write/replace this object. Notice that so long as the object isn't replaced, any
                                // reference taken earlier while walking the deps list is still valid.
                                module.executed = executing;
                                while((arg = deps[i++])){
                                        argResult = ((arg === cjsRequireModule) ? createRequire(module) :
                                                                        ((arg === cjsExportsModule) ? module.cjs.exports :
                                                                                ((arg === cjsModuleModule) ? module.cjs :
                                                                                        execModule(arg, strict))));
                                        if(argResult === abortExec){
                                                module.executed = 0;
                                                req.trace("loader-exec-module", ["abort", mid]);
                                                has("dojo-trace-api") && circleTrace.pop();
                                                return abortExec;
                                        }
                                        args.push(argResult);
                                }
                                runFactory(module, args);
                                finishExec(module);
                                has("dojo-trace-api") && circleTrace.pop();
                        }
                        // at this point the module is guaranteed fully executed

                        return module.result;
                },


                checkCompleteGuard = 0,

                guardCheckComplete = function(proc){
                        try{
                                checkCompleteGuard++;
                                proc();
                        }finally{
                                checkCompleteGuard--;
                        }
                        if(execComplete()){
                                signal("idle", []);
                        }
                },

                checkComplete = function(){
                        // keep going through the execQ as long as at least one factory is executed
                        // plugins, recursion, cached modules all make for many execution path possibilities
                        if(checkCompleteGuard){
                                return;
                        }
                        guardCheckComplete(function(){
                                checkDojoRequirePlugin();
                                for(var currentDefOrder, module, i = 0; i < execQ.length;){
                                        currentDefOrder = defOrder;
                                        module = execQ[i];
                                        execModule(module);
                                        if(currentDefOrder!=defOrder){
                                                // defOrder was bumped one or more times indicating something was executed (note, this indicates
                                                // the execQ was modified, maybe a lot (for example a later module causes an earlier module to execute)
                                                checkDojoRequirePlugin();
                                                i = 0;
                                        }else{
                                                // nothing happened; check the next module in the exec queue
                                                i++;
                                        }
                                }
                        });
                };


        if(has("dojo-undef-api")){
                req.undef = function(moduleId, referenceModule){
                        // In order to reload a module, it must be undefined (this routine) and then re-requested.
                        // This is useful for testing frameworks (at least).
                        var module = getModule(moduleId, referenceModule);
                        setArrived(module);
                        mix(module, {def:0, executed:0, injected:0, node:0});
                };
        }

        if(has("dojo-inject-api")){
                if(has("dojo-loader-eval-hint-url")===undefined){
                        has.add("dojo-loader-eval-hint-url", 1);
                }

                var fixupUrl= function(url){
                                url += ""; // make sure url is a Javascript string (some paths may be a Java string)
                                return url + (cacheBust ? ((/\?/.test(url) ? "&" : "?") + cacheBust) : "");
                        },

                        injectPlugin = function(
                                module
                        ){
                                // injects the plugin module given by module; may have to inject the plugin itself
                                var plugin = module.plugin;

                                if(plugin.executed === executed && !plugin.load){
                                        // executed the module not knowing it was a plugin
                                        promoteModuleToPlugin(plugin);
                                }

                                var onLoad = function(def){
                                                module.result = def;
                                                setArrived(module);
                                                finishExec(module);
                                                checkComplete();
                                        };

                                if(plugin.load){
                                        plugin.load(module.prid, module.req, onLoad);
                                }else if(plugin.loadQ){
                                        plugin.loadQ.push(module);
                                }else{
                                        // the unshift instead of push is important: we don't want plugins to execute as
                                        // dependencies of some other module because this may cause circles when the plugin
                                        // loadQ is run; also, generally, we want plugins to run early since they may load
                                        // several other modules and therefore can potentially unblock many modules
                                        plugin.loadQ = [module];
                                        execQ.unshift(plugin);
                                        injectModule(plugin);
                                }
                        },

                        // for IE, injecting a module may result in a recursive execution if the module is in the cache

                        cached = 0,

                        injectingModule = 0,

                        injectingCachedModule = 0,

                        evalModuleText = function(text, module){
                                // see def() for the injectingCachedModule bracket; it simply causes a short, safe circuit
                                if(has("config-stripStrict")){
                                        text = text.replace(/"use strict"/g, '');
                                }
                                injectingCachedModule = 1;
                                if(has("config-dojo-loader-catches")){
                                        try{
                                                if(text===cached){
                                                        cached.call(null);
                                                }else{
                                                        req.eval(text, has("dojo-loader-eval-hint-url") ? module.url : module.mid);
                                                }
                                        }catch(e){
                                                signal(error, makeError("evalModuleThrew", module));
                                        }
                                }else{
                                        if(text===cached){
                                                cached.call(null);
                                        }else{
                                                req.eval(text, has("dojo-loader-eval-hint-url") ? module.url : module.mid);
                                        }
                                }
                                injectingCachedModule = 0;
                        },

                        injectModule = function(module){
                                // Inject the module. In the browser environment, this means appending a script element into
                                // the document; in other environments, it means loading a file.
                                //
                                // If in synchronous mode, then get the module synchronously if it's not xdomainLoading.

                                var mid = module.mid,
                                        url = module.url;
                                if(module.executed || module.injected || waiting[mid] || (module.url && ((module.pack && waiting[module.url]===module.pack) || waiting[module.url]==1))){
                                        return;
                                }
                                setRequested(module);

                                if(has("dojo-combo-api")){
                                        var viaCombo = 0;
                                        if(module.plugin && module.plugin.isCombo){
                                                // a combo plugin; therefore, must be handled by combo service
                                                // the prid should have already been converted to a URL (if required by the plugin) during
                                                // the normalize process; in any event, there is no way for the loader to know how to
                                                // to the conversion; therefore the third argument is zero
                                                req.combo.add(module.plugin.mid, module.prid, 0, req);
                                                viaCombo = 1;
                                        }else if(!module.plugin){
                                                viaCombo = req.combo.add(0, module.mid, module.url, req);
                                        }
                                        if(viaCombo){
                                                comboPending= 1;
                                                return;
                                        }
                                }

                                if(module.plugin){
                                        injectPlugin(module);
                                        return;
                                } // else a normal module (not a plugin)


                                var onLoadCallback = function(){
                                        runDefQ(module);
                                        if(module.injected !== arrived){
                                                // the script that contained the module arrived and has been executed yet
                                                // nothing was added to the defQ (so it wasn't an AMD module) and the module
                                                // wasn't marked as arrived by dojo.provide (so it wasn't a v1.6- module);
                                                // therefore, it must not have been a module; adjust state accordingly
                                                if(has("dojo-enforceDefine")){
                                                        signal(error, makeError("noDefine", module));
                                                        return;
                                                }
                                                setArrived(module);
                                                mix(module, nonModuleProps);
                                                req.trace("loader-define-nonmodule", [module.url]);
                                        }

                                        if(has("dojo-sync-loader") && legacyMode){
                                                // must call checkComplete even in for sync loader because we may be in xdomainLoading mode;
                                                // but, if xd loading, then don't call checkComplete until out of the current sync traversal
                                                // in order to preserve order of execution of the dojo.required modules
                                                !syncExecStack.length && checkComplete();
                                        }else{
                                                checkComplete();
                                        }
                                };
                                cached = cache[mid] || cache[urlKeyPrefix + module.url];
                                if(cached){
                                        req.trace("loader-inject", ["cache", module.mid, url]);
                                        evalModuleText(cached, module);
                                        onLoadCallback();
                                        return;
                                }
                                if(has("dojo-sync-loader") && legacyMode){
                                        if(module.isXd){
                                                // switch to async mode temporarily; if current legacyMode!=sync, then is must be one of {legacyAsync, xd, false}
                                                legacyMode==sync && (legacyMode = xd);
                                                // fall through and load via script injection
                                        }else if(module.isAmd && legacyMode!=sync){
                                                // fall through and load via script injection
                                        }else{
                                                // mode may be sync, xd/legacyAsync, or async; module may be AMD or legacy; but module is always located on the same domain
                                                var xhrCallback = function(text){
                                                        if(legacyMode==sync){
                                                                // the top of syncExecStack gives the current synchronously executing module; the loader needs
                                                                // to know this if it has to switch to async loading in the middle of evaluating a legacy module
                                                                // this happens when a modules dojo.require's a module that must be loaded async because it's xdomain
                                                                // (using unshift/shift because there is no back() methods for Javascript arrays)
                                                                syncExecStack.unshift(module);
                                                                evalModuleText(text, module);
                                                                syncExecStack.shift();

                                                                // maybe the module was an AMD module
                                                                runDefQ(module);

                                                                // legacy modules never get to defineModule() => cjs and injected never set; also evaluation implies executing
                                                                if(!module.cjs){
                                                                        setArrived(module);
                                                                        finishExec(module);
                                                                }

                                                                if(module.finish){
                                                                        // while synchronously evaluating this module, dojo.require was applied referencing a module
                                                                        // that had to be loaded async; therefore, the loader stopped answering all dojo.require
                                                                        // requests so they could be answered completely in the correct sequence; module.finish gives
                                                                        // the list of dojo.requires that must be re-applied once all target modules are available;
                                                                        // make a synthetic module to execute the dojo.require's in the correct order

                                                                        // compute a guaranteed-unique mid for the synthetic finish module; remember the finish vector; remove it from the reference module
                                                                        // TODO: can we just leave the module.finish...what's it hurting?
                                                                        var finishMid = mid + "*finish",
                                                                                finish = module.finish;
                                                                        delete module.finish;

                                                                        def(finishMid, ["dojo", ("dojo/require!" + finish.join(",")).replace(/\./g, "/")], function(dojo){
                                                                                forEach(finish, function(mid){ dojo.require(mid); });
                                                                        });
                                                                        // unshift, not push, which causes the current traversal to be reattempted from the top
                                                                        execQ.unshift(getModule(finishMid));
                                                                }
                                                                onLoadCallback();
                                                        }else{
                                                                text = transformToAmd(module, text);
                                                                if(text){
                                                                        evalModuleText(text, module);
                                                                        onLoadCallback();
                                                                }else{
                                                                        // if transformToAmd returned falsy, then the module was already AMD and it can be script-injected
                                                                        // do so to improve debugability(even though it means another download...which probably won't happen with a good browser cache)
                                                                        injectingModule = module;
                                                                        req.injectUrl(fixupUrl(url), onLoadCallback, module);
                                                                        injectingModule = 0;
                                                                }
                                                        }
                                                };

                                                req.trace("loader-inject", ["xhr", module.mid, url, legacyMode!=sync]);
                                                if(has("config-dojo-loader-catches")){
                                                        try{
                                                                req.getText(url, legacyMode!=sync, xhrCallback);
                                                        }catch(e){
                                                                signal(error, makeError("xhrInjectFailed", [module, e]));
                                                        }
                                                }else{
                                                        req.getText(url, legacyMode!=sync, xhrCallback);
                                                }
                                                return;
                                        }
                                } // else async mode or fell through in xdomain loading mode; either way, load by script injection
                                req.trace("loader-inject", ["script", module.mid, url]);
                                injectingModule = module;
                                req.injectUrl(fixupUrl(url), onLoadCallback, module);
                                injectingModule = 0;
                        },

                        defineModule = function(module, deps, def){
                                req.trace("loader-define-module", [module.mid, deps]);

                                if(has("dojo-combo-api") && module.plugin && module.plugin.isCombo){
                                        // the module is a plugin resource loaded by the combo service
                                        // note: check for module.plugin should be enough since normal plugin resources should
                                        // not follow this path; module.plugin.isCombo is future-proofing belt and suspenders
                                        module.result = isFunction(def) ? def() : def;
                                        setArrived(module);
                                        finishExec(module);
                                        return module;
                                }

                                var mid = module.mid;
                                if(module.injected === arrived){
                                        signal(error, makeError("multipleDefine", module));
                                        return module;
                                }
                                mix(module, {
                                        deps: deps,
                                        def: def,
                                        cjs: {
                                                id: module.mid,
                                                uri: module.url,
                                                exports: (module.result = {}),
                                                setExports: function(exports){
                                                        module.cjs.exports = exports;
                                                },
                                                config:function(){
                                                        return module.config;
                                                }
                                        }
                                });

                                // resolve deps with respect to this module
                                for(var i = 0; deps[i]; i++){
                                        deps[i] = getModule(deps[i], module);
                                }

                                if(has("dojo-sync-loader") && legacyMode && !waiting[mid]){
                                        // the module showed up without being asked for; it was probably in a <script> element
                                        injectDependencies(module);
                                        execQ.push(module);
                                        checkComplete();
                                }
                                setArrived(module);

                                if(!isFunction(def) && !deps.length){
                                        module.result = def;
                                        finishExec(module);
                                }

                                return module;
                        },

                        runDefQ = function(referenceModule, mids){
                                // defQ is an array of [id, dependencies, factory]
                                // mids (if any) is a vector of mids given by a combo service
                                var definedModules = [],
                                        module, args;
                                while(defQ.length){
                                        args = defQ.shift();
                                        mids && (args[0]= mids.shift());
                                        // explicit define indicates possible multiple modules in a single file; delay injecting dependencies until defQ fully
                                        // processed since modules earlier in the queue depend on already-arrived modules that are later in the queue
                                        // TODO: what if no args[0] and no referenceModule
                                        module = (args[0] && getModule(args[0])) || referenceModule;
                                        definedModules.push([module, args[1], args[2]]);
                                }
                                consumePendingCacheInsert(referenceModule);
                                forEach(definedModules, function(args){
                                        injectDependencies(defineModule.apply(null, args));
                                });
                        };
        }

        var timerId = 0,
                clearTimer = noop,
                startTimer = noop;
        if(has("dojo-timeout-api")){
                // Timer machinery that monitors how long the loader is waiting and signals an error when the timer runs out.
                clearTimer = function(){
                        timerId && clearTimeout(timerId);
                        timerId = 0;
                };

                startTimer = function(){
                        clearTimer();
                        if(req.waitms){
                                timerId = window.setTimeout(function(){
                                        clearTimer();
                                        signal(error, makeError("timeout", waiting));
                                }, req.waitms);
                        }
                };
        }

        if (has("dom")) {
                // Test for IE's different way of signaling when scripts finish loading.  Note that according to
                // http://bugs.dojotoolkit.org/ticket/15096#comment:14, IE9 also needs to follow the
                // IE specific code path even though it has an addEventListener() method.
                // Unknown if special path needed on IE10+, which also has a document.attachEvent() method.
                // Should evaluate to false for Opera and Windows 8 apps, even though they document.attachEvent()
                //  is defined in both those environments.
                has.add("ie-event-behavior", doc.attachEvent && typeof Windows === "undefined" &&
                        (typeof opera === "undefined" || opera.toString() != "[object Opera]"));
        }

        if(has("dom") && (has("dojo-inject-api") || has("dojo-dom-ready-api"))){
                var domOn = function(node, eventName, ieEventName, handler){
                                // Add an event listener to a DOM node using the API appropriate for the current browser;
                                // return a function that will disconnect the listener.
                                if(!has("ie-event-behavior")){
                                        node.addEventListener(eventName, handler, false);
                                        return function(){
                                                node.removeEventListener(eventName, handler, false);
                                        };
                                }else{
                                        node.attachEvent(ieEventName, handler);
                                        return function(){
                                                node.detachEvent(ieEventName, handler);
                                        };
                                }
                        },
                        windowOnLoadListener = domOn(window, "load", "onload", function(){
                                req.pageLoaded = 1;
                                doc.readyState!="complete" && (doc.readyState = "complete");
                                windowOnLoadListener();
                        });

                if(has("dojo-inject-api")){
                        // if the loader is on the page, there must be at least one script element
                        // getting its parent and then doing insertBefore solves the "Operation Aborted"
                        // error in IE from appending to a node that isn't properly closed; see
                        // dojo/tests/_base/loader/requirejs/simple-badbase.html for an example
                        // don't use scripts with type dojo/... since these may be removed; see #15809
                        // prefer to use the insertPoint computed during the config sniff in case a script is removed; see #16958
                        var scripts = doc.getElementsByTagName("script"),
                                i = 0,
                                script;
                        while(!insertPointSibling){
                                if(!/^dojo/.test((script = scripts[i++]) && script.type)){
                                        insertPointSibling= script;
                                }
                        }

                        req.injectUrl = function(url, callback, owner){
                                // insert a script element to the insert-point element with src=url;
                                // apply callback upon detecting the script has loaded.

                                var node = owner.node = doc.createElement("script"),
                                        onLoad = function(e){
                                                e = e || window.event;
                                                var node = e.target || e.srcElement;
                                                if(e.type === "load" || /complete|loaded/.test(node.readyState)){
                                                        loadDisconnector();
                                                        errorDisconnector();
                                                        callback && callback();
                                                }
                                        },
                                        loadDisconnector = domOn(node, "load", "onreadystatechange", onLoad),
                                        errorDisconnector = domOn(node, "error", "onerror", function(e){
                                                loadDisconnector();
                                                errorDisconnector();
                                                signal(error, makeError("scriptError", [url, e]));
                                        });

                                node.type = "text/javascript";
                                node.charset = "utf-8";
                                node.src = url;
                                insertPointSibling.parentNode.insertBefore(node, insertPointSibling);
                                return node;
                        };
                }
        }

        if(has("dojo-log-api")){
                req.log = function(){
                        try{
                                for(var i = 0; i < arguments.length; i++){
                                        console.log(arguments[i]);
                                }
                        }catch(e){}
                };
        }else{
                req.log = noop;
        }

        if(has("dojo-trace-api")){
                var trace = req.trace = function(
                        group,  // the trace group to which this application belongs
                        args    // the contents of the trace
                ){
                        ///
                        // Tracing interface by group.
                        //
                        // Sends the contents of args to the console iff (req.trace.on && req.trace[group])

                        if(trace.on && trace.group[group]){
                                signal("trace", [group, args]);
                                for(var arg, dump = [], text= "trace:" + group + (args.length ? (":" + args[0]) : ""), i= 1; i<args.length;){
                                        arg = args[i++];
                                        if(isString(arg)){
                                                text += ", " + arg;
                                        }else{
                                                dump.push(arg);
                                        }
                                }
                                req.log(text);
                                dump.length && dump.push(".");
                                req.log.apply(req, dump);
                        }
                };
                mix(trace, {
                        on:1,
                        group:{},
                        set:function(group, value){
                                if(isString(group)){
                                        trace.group[group]= value;
                                }else{
                                        mix(trace.group, group);
                                }
                        }
                });
                trace.set(mix(mix(mix({}, defaultConfig.trace), userConfig.trace), dojoSniffConfig.trace));
                on("config", function(config){
                        config.trace && trace.set(config.trace);
                });
        }else{
                req.trace = noop;
        }

        var def = function(
                mid,              //(commonjs.moduleId, optional)
                dependencies, //(array of commonjs.moduleId, optional) list of modules to be loaded before running factory
                factory           //(any)
        ){
                ///
                // Advises the loader of a module factory. //Implements http://wiki.commonjs.org/wiki/Modules/AsynchronousDefinition.
                ///
                //note
                // CommonJS factory scan courtesy of http://requirejs.org

                var arity = arguments.length,
                        defaultDeps = ["require", "exports", "module"],
                        // the predominate signature...
                        args = [0, mid, dependencies];
                if(arity==1){
                        args = [0, (isFunction(mid) ? defaultDeps : []), mid];
                }else if(arity==2 && isString(mid)){
                        args = [mid, (isFunction(dependencies) ? defaultDeps : []), dependencies];
                }else if(arity==3){
                        args = [mid, dependencies, factory];
                }

                if(has("dojo-amd-factory-scan") && args[1]===defaultDeps){
                        args[2].toString()
                                .replace(/(\/\*([\s\S]*?)\*\/|\/\/(.*)$)/mg, "")
                                .replace(/require\(["']([\w\!\-_\.\/]+)["']\)/g, function(match, dep){
                                args[1].push(dep);
                        });
                }

                req.trace("loader-define", args.slice(0, 2));
                var targetModule = args[0] && getModule(args[0]),
                        module;
                if(targetModule && !waiting[targetModule.mid]){
                        // given a mid that hasn't been requested; therefore, defined through means other than injecting
                        // consequent to a require() or define() application; examples include defining modules on-the-fly
                        // due to some code path or including a module in a script element. In any case,
                        // there is no callback waiting to finish processing and nothing to trigger the defQ and the
                        // dependencies are never requested; therefore, do it here.
                        injectDependencies(defineModule(targetModule, args[1], args[2]));
                }else if(!has("ie-event-behavior") || !has("host-browser") || injectingCachedModule){
                        // not IE path: anonymous module and therefore must have been injected; therefore, onLoad will fire immediately
                        // after script finishes being evaluated and the defQ can be run from that callback to detect the module id
                        defQ.push(args);
                }else{
                        // IE path: possibly anonymous module and therefore injected; therefore, cannot depend on 1-to-1,
                        // in-order exec of onLoad with script eval (since it's IE) and must manually detect here
                        targetModule = targetModule || injectingModule;
                        if(!targetModule){
                                for(mid in waiting){
                                        module = modules[mid];
                                        if(module && module.node && module.node.readyState === 'interactive'){
                                                targetModule = module;
                                                break;
                                        }
                                }
                                if(has("dojo-combo-api") && !targetModule){
                                        for(var i = 0; i<combosPending.length; i++){
                                                targetModule = combosPending[i];
                                                if(targetModule.node && targetModule.node.readyState === 'interactive'){
                                                        break;
                                                }
                                                targetModule= 0;
                                        }
                                }
                        }
                        if(has("dojo-combo-api") && isArray(targetModule)){
                                injectDependencies(defineModule(getModule(targetModule.shift()), args[1], args[2]));
                                if(!targetModule.length){
                                        combosPending.splice(i, 1);
                                }
                        }else if(targetModule){
                                consumePendingCacheInsert(targetModule);
                                injectDependencies(defineModule(targetModule, args[1], args[2]));
                        }else{
                                signal(error, makeError("ieDefineFailed", args[0]));
                        }
                        checkComplete();
                }
        };
        def.amd = {
                vendor:"dojotoolkit.org"
        };

        if(has("dojo-requirejs-api")){
                req.def = def;
        }

        // allow config to override default implementation of named functions; this is useful for
        // non-browser environments, e.g., overriding injectUrl, getText, log, etc. in node.js, Rhino, etc.
        // also useful for testing and monkey patching loader
        mix(mix(req, defaultConfig.loaderPatch), userConfig.loaderPatch);

        // now that req is fully initialized and won't change, we can hook it up to the error signal
        on(error, function(arg){
                try{
                        console.error(arg);
                        if(arg instanceof Error){
                                for(var p in arg){
                                        console.log(p + ":", arg[p]);
                                }
                                console.log(".");
                        }
                }catch(e){}
        });

        // always publish these
        mix(req, {
                uid:uid,
                cache:cache,
                packs:packs
        });


        if(has("dojo-publish-privates")){
                mix(req, {
                        // these may be interesting to look at when debugging
                        paths:paths,
                        aliases:aliases,
                        modules:modules,
                        legacyMode:legacyMode,
                        execQ:execQ,
                        defQ:defQ,
                        waiting:waiting,

                        // these are used for testing
                        // TODO: move testing infrastructure to a different has feature
                        packs:packs,
                        mapProgs:mapProgs,
                        pathsMapProg:pathsMapProg,
                        listenerQueues:listenerQueues,

                        // these are used by the builder (at least)
                        computeMapProg:computeMapProg,
                        computeAliases:computeAliases,
                        runMapProg:runMapProg,
                        compactPath:compactPath,
                        getModuleInfo:getModuleInfo_
                });
        }

        // the loader can be defined exactly once; look for global define which is the symbol AMD loaders are
        // *required* to define (as opposed to require, which is optional)
        if(global.define){
                if(has("dojo-log-api")){
                        signal(error, makeError("defineAlreadyDefined", 0));
                }
                return;
        }else{
                global.define = def;
                global.require = req;
                if(has("host-node")){
                        require = req;
                }
        }

        if(has("dojo-combo-api") && req.combo && req.combo.plugins){
                var plugins = req.combo.plugins,
                        pluginName;
                for(pluginName in plugins){
                        mix(mix(getModule(pluginName), plugins[pluginName]), {isCombo:1, executed:"executed", load:1});
                }
        }

        if(has("dojo-config-api")){
                forEach(delayedModuleConfig, function(c){ config(c); });
                var bootDeps = dojoSniffConfig.deps ||  userConfig.deps || defaultConfig.deps,
                        bootCallback = dojoSniffConfig.callback || userConfig.callback || defaultConfig.callback;
                req.boot = (bootDeps || bootCallback) ? [bootDeps || [], bootCallback] : 0;
        }
        if(!has("dojo-built")){
                !req.async && req(["dojo"]);
                req.boot && req.apply(null, req.boot);
        }
})
//>>excludeStart("replaceLoaderConfig", kwArgs.replaceLoaderConfig);
(
        // userConfig
        (function(){
                // make sure we're looking at global dojoConfig etc.
                return this.dojoConfig || this.djConfig || this.require || {};
        })(),

        // defaultConfig
        {
                // the default configuration for a browser; this will be modified by other environments
                hasCache:{
                        "host-browser":1,
                        "dom":1,
                        "dojo-amd-factory-scan":1,
                        "dojo-loader":1,
                        "dojo-has-api":1,
                        "dojo-inject-api":1,
                        "dojo-timeout-api":1,
                        "dojo-trace-api":1,
                        "dojo-log-api":1,
                        "dojo-dom-ready-api":1,
                        "dojo-publish-privates":1,
                        "dojo-config-api":1,
                        "dojo-sniff":1,
                        "dojo-sync-loader":1,
                        "dojo-test-sniff":1,
                        "config-deferredInstrumentation":1,
                        "config-useDeferredInstrumentation":"report-unhandled-rejections",
                        "config-tlmSiblingOfDojo":1
                },
                packages:[{
                        // note: like v1.6-, this bootstrap computes baseUrl to be the dojo directory
                        name:'dojo',
                        location:'.'
                },{
                        name:'tests',
                        location:'./tests'
                },{
                        name:'dijit',
                        location:'../dijit'
                },{
                        name:'build',
                        location:'../util/build'
                },{
                        name:'doh',
                        location:'../util/doh'
                },{
                        name:'dojox',
                        location:'../dojox'
                },{
                        name:'demos',
                        location:'../demos'
                }],
                trace:{
                        // these are listed so it's simple to turn them on/off while debugging loading
                        "loader-inject":0,
                        "loader-define":0,
                        "loader-exec-module":0,
                        "loader-run-factory":0,
                        "loader-finish-exec":0,
                        "loader-define-module":0,
                        "loader-circular-dependency":0,
                        "loader-define-nonmodule":0
                },
                async:0,
                waitSeconds:15
        }
);
//>>excludeEnd("replaceLoaderConfig")