Adopt latest loader

src/vs/css.js

@@ -51,13 +51,7 @@ var CSSLoaderPlugin;
         BrowserCSSLoader.prototype._insertLinkNode = function (linkNode) {
             this._pendingLoads++;
             var head = document.head || document.getElementsByTagName('head')[0];
-            var other = head.getElementsByTagName('link') || head.getElementsByTagName('script');
-            if (other.length > 0) {
-                head.insertBefore(linkNode, other[other.length - 1]);
-            }
-            else {
-                head.appendChild(linkNode);
-            }
+            head.appendChild(linkNode);
         };
         BrowserCSSLoader.prototype.createLinkTag = function (name, cssUrl, externalCallback, externalErrorback) {
             var _this = this;

src/vs/loader.js

@@ -681,13 +681,33 @@ var AMDLoader;
         };
         return BrowserScriptLoader;
     }());
+    function canUseEval(moduleManager) {
+        var trustedTypesPolicy = moduleManager.getConfig().getOptionsLiteral().trustedTypesPolicy;
+        try {
+            var func = (trustedTypesPolicy
+                ? self.eval(trustedTypesPolicy.createScript('', 'true'))
+                : new Function('true'));
+            func.call(self);
+            return true;
+        }
+        catch (err) {
+            return false;
+        }
+    }
     var WorkerScriptLoader = /** @class */ (function () {
         function WorkerScriptLoader() {
+            this._cachedCanUseEval = null;
         }
+        WorkerScriptLoader.prototype._canUseEval = function (moduleManager) {
+            if (this._cachedCanUseEval === null) {
+                this._cachedCanUseEval = canUseEval(moduleManager);
+            }
+            return this._cachedCanUseEval;
+        };
         WorkerScriptLoader.prototype.load = function (moduleManager, scriptSrc, callback, errorback) {
             var trustedTypesPolicy = moduleManager.getConfig().getOptionsLiteral().trustedTypesPolicy;
             var isCrossOrigin = (/^((http:)|(https:)|(file:))/.test(scriptSrc) && scriptSrc.substring(0, self.origin.length) !== self.origin);
-            if (!isCrossOrigin) {
+            if (!isCrossOrigin && this._canUseEval(moduleManager)) {
                 // use `fetch` if possible because `importScripts`
                 // is synchronous and can lead to deadlocks on Safari
                 fetch(scriptSrc).then(function (response) {

src/vs/nls.js

@@ -33,7 +33,7 @@ var NLSLoaderPlugin;
                 this._detect();
                 return this._isPseudo;
             },
-            enumerable: true,
+            enumerable: false,
             configurable: true
         });
         Environment.prototype._detect = function () {