fix initial completions, don't know why it works now :P

Author: devanshj

src/types.ts

@@ -53,9 +53,9 @@ export namespace Machine {
               , "please add `on: {}` to state nodes that only have an `effect` property. "
               , "See the documentation to learn more."
               ]> :
-        [keyof A.Get<Self, "states">] extends [never]
-          ? A.CustomError<"Error: no states defined", A.Get<Self, "initial">>
-          : keyof A.Get<Self, "states">
+        [keyof A.Get<Self, "states", {}>] extends [never]
+          ? A.CustomError<"Error: no states defined", A.Get<Self, "initial", never>>
+          : keyof A.Get<Self, "states", {}>
       , states:
           { [StateIdentifier in keyof A.Get<Self, "states">]:
               StateIdentifier extends A.String

test/types.twoslash-test.ts

@@ -30,7 +30,7 @@ describe("Machine.Definition", () => {
       })
     })
 
-    it.skip("shows child state identifiers as completions", () => {
+    it("shows child state identifiers as completions", () => {
       useStateMachine({
         // @ts-expect-error
         initial: "  ",