Init. Map does not function and only working on backend at the moment.

node_modules/arraybuffer.slice/index.js

@@ -0,0 +1,29 @@
+/**
+ * An abstraction for slicing an arraybuffer even when
+ * ArrayBuffer.prototype.slice is not supported
+ *
+ * @api public
+ */
+
+module.exports = function(arraybuffer, start, end) {
+  var bytes = arraybuffer.byteLength;
+  start = start || 0;
+  end = end || bytes;
+
+  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }
+
+  if (start < 0) { start += bytes; }
+  if (end < 0) { end += bytes; }
+  if (end > bytes) { end = bytes; }
+
+  if (start >= bytes || start >= end || bytes === 0) {
+    return new ArrayBuffer(0);
+  }
+
+  var abv = new Uint8Array(arraybuffer);
+  var result = new Uint8Array(end - start);
+  for (var i = start, ii = 0; i < end; i++, ii++) {
+    result[ii] = abv[i];
+  }
+  return result.buffer;
+};