fix(redirectTo): Fix typings for redirectTo. Allow a function that re…

…turns a target state or a promise for one.

src/state/interface.ts

@@ -54,7 +54,7 @@ export interface _ViewDeclaration {
    * @internalapi
    */
   $uiViewName?: string;
-  
+
   /**
    * The normalized context anchor (state name) for the `uiViewName`
    *
@@ -314,13 +314,13 @@ export interface StateDeclaration {
   /**
    * Sets the resolve policy defaults for all resolves on this state
    *
-   * This should be an [[ResolvePolicy]] object. 
-   * 
+   * This should be an [[ResolvePolicy]] object.
+   *
    * It can contain the following optional keys/values:
-   * 
+   *
    * - `when`: (optional) defines when the resolve is fetched. Accepted values: "LAZY" or "EAGER"
    * - `async`: (optional) if the transition waits for the resolve. Accepted values: "WAIT", "NOWAIT", "RXWAIT"
-   * 
+   *
    * See [[ResolvePolicy]] for more details.
    */
   resolvePolicy?: ResolvePolicy
@@ -504,6 +504,7 @@ export interface StateDeclaration {
    * ```
    */
   redirectTo?: RedirectToResult |
+      ((transition: Transition) => RedirectToResult) |
       ((transition: Transition) => Promise<RedirectToResult>);
 
   /**

test/hooksSpec.ts

@@ -117,7 +117,7 @@ describe("hooks", () => {
 
     // Test for #3117
     it("should not redirect if the redirectTo: function returns undefined", (done) => {
-      find(states, s => s.name === 'A').redirectTo = function() {};
+      find(states, s => s.name === 'A').redirectTo = function() {} as any;
       init();
 
       $state.go('A').then(() => {
@@ -213,4 +213,4 @@ describe("hooks", () => {
 
     setTimeout(() => { router.dispose(); disposed(); }, 50);
   });
-});
+});