Merge pull request #1278 from logancameo/master

NextStep and selectNext async typing updates

Author: Richard Všianský

packages/common/src/wizard/select-next.d.ts

@@ -1,12 +1,16 @@
 import { AnyObject } from "@data-driven-forms/react-form-renderer";
 
-export type NextStep = string | ((values: AnyObject) => string) | AnyObject & {
+export type NextStepContext = {
+  values: AnyObject;
+}
+
+export type NextStep = string | ((context: NextStepContext) => string) | ((context: NextStepContext) => Promise<string>) | AnyObject & {
   stepMapper: {
     [key: string]: string;
     [key: number]: string;
   };
   when: string[] | string
 }
 
-declare const selectNext: (nextStep: NextStep, getState: (() => AnyObject & {values: AnyObject})) => string;
+declare const selectNext: <T extends NextStep>(nextStep: T, getState: (() => AnyObject & {values: AnyObject})) => T extends (...args: any[]) => infer U ? U : string;
 export default selectNext;