Promise.try shim

src/promise-try-shim.js

@@ -0,0 +1,9 @@
+// Polyfill for Promise.try, promisifies synchronous code,
+// resolving with function's return value and catching synchronous errors with a promise rejection
+if (!Promise.try) {
+    Promise.try = function(fn) {
+        return new Promise(resolve => {
+            resolve(fn());
+        });
+    };
+}