Update llama2.js

llama2.js

@@ -1,4 +1,8 @@
 
+var cache;
+try {
+  cache = typeof caches !== 'undefined' ? caches.open('llama-cache') : null;
+} catch (_) {}
 
 // The Module object: Our interface to the outside world. We import
 // and export values on it. There are various ways Module can be used:
@@ -97,14 +101,44 @@ var REMOTE_PACKAGE_SIZE = metadata['remote_package_size'];
           throw new Error("NetworkError for: " + packageName);
         }
         xhr.onload = function(event) {
-          if (xhr.status == 200 || xhr.status == 304 || xhr.status == 206 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
+        
+        if(xhr.status == 200) {
+          if (cache) {
+            cache.then(async c => {
+              try {
+                await c.put(packageName, new Response(xhr.response));
+              } catch(_) {}
+              callback(xhr.response);
+            });
+          } else {
+            callback(xhr.response);
+          }
+        } else if (xhr.status == 304 || xhr.status == 206 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
             var packageData = xhr.response;
             callback(packageData);
           } else {
             throw new Error(xhr.statusText + " : " + xhr.responseURL);
           }
         };
-        xhr.send(null);
+        
+        if (cache) {
+          cache.then(async c => {
+            try {
+              let response = await c.match(packageName);
+              if (response){
+                callback(await response.arrayBuffer());
+              } else {
+                xhr.send(null);
+              }
+            } catch (_) {
+              xhr.send(null);
+            }
+          })
+        }else{
+            xhr.send(null);
+        }
+        
+        
       };
 
       function handleError(error) {
@@ -1235,6 +1269,7 @@ function getBinary(file) {
 }
 
 function getBinaryPromise() {
+console.log('getBinaryPromise');
   // If we don't have the binary yet, try to to load it asynchronously.
   // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
   // See https://github.com/github/fetch/pull/92#issuecomment-140665932
@@ -5834,3 +5869,4 @@ run();
 
 
 
+