fix(overmind): add missing typeof for promise check

Author: christianalfoni

packages/node_modules/overmind/src/utils.ts

@@ -20,8 +20,8 @@ export function isPromise(maybePromise: any) {
   return (
     maybePromise instanceof Promise ||
     (maybePromise &&
-      maybePromise.then === 'function' &&
-      maybePromise.catch === 'function')
+      typeof maybePromise.then === 'function' &&
+      typeof maybePromise.catch === 'function')
   )
 }