1 files changed, 29 insertions, 0 deletions
diff --git a/www/lib/localforage/src/utils/createBlob.js b/www/lib/localforage/src/utils/createBlob.js
new file mode 100644
index 00000000..4d698551
--- /dev/null
+++ b/www/lib/localforage/src/utils/createBlob.js
@@ -0,0 +1,29 @@
+// Abstracts constructing a Blob object, so it also works in older
+// browsers that don't support the native Blob constructor. (i.e.
+// old QtWebKit versions, at least).
+// Abstracts constructing a Blob object, so it also works in older
+// browsers that don't support the native Blob constructor. (i.e.
+// old QtWebKit versions, at least).
+function createBlob(parts, properties) {
+    /* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */
+    parts = parts || [];
+    properties = properties || {};
+    try {
+        return new Blob(parts, properties);
+    } catch (e) {
+        if (e.name !== 'TypeError') {
+            throw e;
+        }
+        var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
+            typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
+            typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder :
+            WebKitBlobBuilder;
+        var builder = new Builder();
+        for (var i = 0; i < parts.length; i += 1) {
+            builder.append(parts[i]);
+        }
+        return builder.getBlob(properties.type);
+    }
+}
+
+export default createBlob;