replace jest with ava

node_modules/currently-unhandled/browser.js

@@ -0,0 +1,27 @@
+'use strict';
+var core = require('./core');
+
+function unwrapEvent(event) {
+	if (event && event.detail && event.detail.promise) {
+		return event.detail;
+	}
+
+	return event;
+}
+
+module.exports = function (w) {
+	w = w || window;
+	var c = core();
+
+	w.addEventListener('unhandledrejection', function (event) {
+		event = unwrapEvent(event);
+		c.onUnhandledRejection(event.reason, event.promise);
+	});
+
+	w.addEventListener('rejectionhandled', function (event) {
+		event = unwrapEvent(event);
+		c.onRejectionHandled(event.promise);
+	});
+
+	return c.currentlyUnhandled;
+};