Merge pull request #13 from total-typescript/matt/update-to-29-finite-state-machine

Update to 29-finite-state-machine

Author: mattpocock

package.json

@@ -123,4 +123,4 @@
     "ts-toolbelt": "^9.6.0",
     "zod": "^3.19.1"
   }
-}
+}

src/06-identity-functions/29-finite-state-machine.problem.ts

@@ -1,7 +1,7 @@
-// import { F } from "ts-toolbelt";
+type NoInfer<T> = [T][T extends any ? 0 : never];
 
 /**
- * Clue: F.NoInfer is part of the solution!
+ * Clue: NoInfer is part of the solution!
  *
  * You'll need to modify the interface below
  * to get it to work.
@@ -17,7 +17,7 @@ interface FSMConfig<TState extends string> {
 }
 
 export const makeFiniteStateMachine = <TState extends string>(
-  config: FSMConfig<TState>
+  config: FSMConfig<TState>,
 ) => config;
 
 const config = makeFiniteStateMachine({

src/06-identity-functions/29-finite-state-machine.solution.ts

@@ -1,7 +1,8 @@
-import { F } from "ts-toolbelt";
+// Before 5.4
+type NoInfer<T> = [T][T extends any ? 0 : never];
 
 interface FSMConfig<TState extends string> {
-  initial: F.NoInfer<TState>;
+  initial: NoInfer<TState>;
   states: Record<
     TState,
     {