Experimental port to Firebase hosting

public/es6-promise@4.2.5/lib/es6-promise/polyfill.js

@@ -0,0 +1,35 @@
+/*global self*/
+import Promise from './promise';
+
+export default function polyfill() {
+  let local;
+
+  if (typeof global !== 'undefined') {
+    local = global;
+  } else if (typeof self !== 'undefined') {
+    local = self;
+  } else {
+    try {
+      local = Function('return this')();
+    } catch (e) {
+      throw new Error('polyfill failed because global object is unavailable in this environment');
+    }
+  }
+
+  let P = local.Promise;
+
+  if (P) {
+    var promiseToString = null;
+    try {
+      promiseToString = Object.prototype.toString.call(P.resolve());
+    } catch(e) {
+      // silently ignored
+    }
+
+    if (promiseToString === '[object Promise]' && !P.cast){
+      return;
+    }
+  }
+
+  local.Promise = Promise;
+}