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Diffstat (limited to 'thirdparty/systemjs/lib/scriptLoader.js')
| -rw-r--r-- | thirdparty/systemjs/lib/scriptLoader.js | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/thirdparty/systemjs/lib/scriptLoader.js b/thirdparty/systemjs/lib/scriptLoader.js deleted file mode 100644 index 8bd1d4b3e..000000000 --- a/thirdparty/systemjs/lib/scriptLoader.js +++ /dev/null @@ -1,196 +0,0 @@ -/* - * Script tag fetch - * - * When load.metadata.scriptLoad is true, we load via script tag injection. - */ -(function() { - - if (typeof document != 'undefined') - var head = document.getElementsByTagName('head')[0]; - - var curSystem; - var curRequire; - - // if doing worker executing, this is set to the load record being executed - var workerLoad = null; - - // interactive mode handling method courtesy RequireJS - var ieEvents = head && (function() { - var s = document.createElement('script'); - var isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]'; - return s.attachEvent && !(s.attachEvent.toString && s.attachEvent.toString().indexOf('[native code') < 0) && !isOpera; - })(); - - // IE interactive-only part - // we store loading scripts array as { script: <script>, load: {...} } - var interactiveLoadingScripts = []; - var interactiveScript; - function getInteractiveScriptLoad() { - if (interactiveScript && interactiveScript.script.readyState === 'interactive') - return interactiveScript.load; - - for (var i = 0; i < interactiveLoadingScripts.length; i++) - if (interactiveLoadingScripts[i].script.readyState == 'interactive') { - interactiveScript = interactiveLoadingScripts[i]; - return interactiveScript.load; - } - } - - // System.register, System.registerDynamic, AMD define pipeline - // this is called by the above methods when they execute - // we then run the reduceRegister_ collection function either immediately - // if we are in IE and know the currently executing script (interactive) - // or later if we need to wait for the synchronous load callback to know the script - var loadingCnt = 0; - var registerQueue = []; - hook('pushRegister_', function(pushRegister) { - return function(register) { - // if using eval-execution then skip - if (pushRegister.call(this, register)) - return false; - - // if using worker execution, then we're done - if (workerLoad) - this.reduceRegister_(workerLoad, register); - - // detect if we know the currently executing load (IE) - // if so, immediately call reduceRegister - else if (ieEvents) - this.reduceRegister_(getInteractiveScriptLoad(), register); - - // otherwise, add to our execution queue - // to call reduceRegister on sync script load event - else if (loadingCnt) - registerQueue.push(register); - - // if we're not currently loading anything though - // then do the reduction against a null load - // (out of band named define or named register) - // note even in non-script environments, this catch is used - else - this.reduceRegister_(null, register); - - return true; - }; - }); - - function webWorkerImport(loader, load) { - return new Promise(function(resolve, reject) { - if (load.metadata.integrity) - reject(new Error('Subresource integrity checking is not supported in web workers.')); - - workerLoad = load; - try { - importScripts(load.address); - } - catch(e) { - workerLoad = null; - reject(e); - } - workerLoad = null; - - // if nothing registered, then something went wrong - if (!load.metadata.entry) - reject(new Error(load.address + ' did not call System.register or AMD define. If loading a global, ensure the meta format is set to global.')); - - resolve(''); - }); - } - - // override fetch to use script injection - hook('fetch', function(fetch) { - return function(load) { - var loader = this; - - if (load.metadata.format == 'json' || !load.metadata.scriptLoad || (!isBrowser && !isWorker)) - return fetch.call(this, load); - - if (isWorker) - return webWorkerImport(loader, load); - - return new Promise(function(resolve, reject) { - var s = document.createElement('script'); - - s.async = true; - - if (load.metadata.crossOrigin) - s.crossOrigin = load.metadata.crossOrigin; - - if (load.metadata.integrity) - s.setAttribute('integrity', load.metadata.integrity); - - if (ieEvents) { - s.attachEvent('onreadystatechange', complete); - interactiveLoadingScripts.push({ - script: s, - load: load - }); - } - else { - s.addEventListener('load', complete, false); - s.addEventListener('error', error, false); - } - - loadingCnt++; - - curSystem = __global.System; - curRequire = __global.require; - - s.src = load.address; - head.appendChild(s); - - function complete(evt) { - if (s.readyState && s.readyState != 'loaded' && s.readyState != 'complete') - return; - - loadingCnt--; - - // complete call is sync on execution finish - // (in ie already done reductions) - if (!load.metadata.entry && !registerQueue.length) { - loader.reduceRegister_(load); - } - else if (!ieEvents) { - for (var i = 0; i < registerQueue.length; i++) - loader.reduceRegister_(load, registerQueue[i]); - registerQueue = []; - } - - cleanup(); - - // if nothing registered, then something went wrong - if (!load.metadata.entry && !load.metadata.bundle) - reject(new Error(load.name + ' did not call System.register or AMD define. If loading a global module configure the global name via the meta exports property for script injection support.')); - - resolve(''); - } - - function error(evt) { - cleanup(); - reject(new Error('Unable to load script ' + load.address)); - } - - function cleanup() { - __global.System = curSystem; - __global.require = curRequire; - - if (s.detachEvent) { - s.detachEvent('onreadystatechange', complete); - for (var i = 0; i < interactiveLoadingScripts.length; i++) - if (interactiveLoadingScripts[i].script == s) { - if (interactiveScript && interactiveScript.script == s) - interactiveScript = null; - interactiveLoadingScripts.splice(i, 1); - } - } - else { - s.removeEventListener('load', complete, false); - s.removeEventListener('error', error, false); - } - - head.removeChild(s); - } - }); - }; - }); -})(); |