typecheck: diagnose missing TYPE OF expressions

docs/ADVANCED_STATIC_TYPING.md

@@ -2,6 +2,20 @@
 
 Claro v1.18.26 adds the first advanced static-typing foundation: typed containers checked by `claro typecheck`.
 
+## Complete `TYPE OF` statements
+
+`TYPE OF` needs an expression, `AS`, and a result name. If the expression is missing, `claro typecheck` gives a repair example instead of silently creating the result variable:
+
+```claro
+TYPE OF AS kind
+```
+
+```text
+TYPE OF needs an expression before AS. Try: TYPE OF score AS kind.
+```
+
+Add the value whose type should be stored, such as `TYPE OF score AS kind`.
+
 Class fields need a type after the field name. If a learner writes `HAS score` instead of `HAS score NUMBER`, `claro typecheck` explains the missing piece:
 
 ```text

docs/CURRENT_STATUS.md

@@ -60,6 +60,7 @@ Ready now:
 - `CHECK TYPE` rejects unknown expected type names with a beginner-facing list of supported types
 - typed function return diagnostics also identify an unknown return expression in compatibility `TAKES` / `LEARNED` functions, matching the modern function and object-method guidance
 - `TYPE OF` reports a direct repair hint when the learner forgets `AS`, for example `TYPE OF score` suggests `TYPE OF score AS kind`
+- `TYPE OF` reports a direct repair hint when the learner forgets the expression before `AS`, for example `TYPE OF AS kind` reports `TYPE OF needs an expression before AS. Try: TYPE OF score AS kind.`
 - `TYPE OF` rejects extra words after its result name with a direct repair hint, so `TYPE OF score AS kind extra` explains that only one result name belongs there; typed `TEACH ... RETURNS TYPE` declarations likewise reject extra words after the return type with a direct repair hint
 - typed `TEACH ... RETURNS` declarations reject a missing return type with a direct repair hint, such as `Function greet needs a return type after RETURNS. Add a type such as NUMBER.` The same diagnostic names the complete class and method, including compatibility `TAKES` / `LEARNED` methods: `Method Player.score needs a return type after RETURNS. Add a type such as NUMBER.`
 - typed list/map checks through `claro typecheck`, including a nested `LIST OF MAP` insertion example

docs/ROADMAP.md

@@ -79,6 +79,7 @@ Keep declared return types honest: `claro typecheck` now reports friendly diagno
 8q.3. Keep `CHECK TYPE` declarations complete: a bare `CHECK TYPE` now explains that the expression, `IS`, and expected type are all required, with a complete repair example.
 8q.4. Keep `CHECK TYPE` declarations ordered: `CHECK TYPE IS NUMBER` now explains that an expression belongs before `IS`, with a complete repair example.
 8q.5. Keep `TYPE OF` declarations understandable: a missing `AS` now gets a direct repair hint with a complete `TYPE OF score AS kind` example.
+8q.5.1. Keep `TYPE OF` declarations complete: a missing expression before `AS` now gets a direct repair hint with a complete `TYPE OF score AS kind` example.
 8q.6. Keep `TYPE OF` declarations unambiguous: extra words after the result name now get a direct repair hint instead of being silently included in the variable name.
 8q.7. Keep typed `TEACH` declarations unambiguous: extra words after a declared return type now get a direct repair hint instead of being treated as part of an unknown type.
 8q.8. Keep typed `TEACH` declarations complete: a bare `RETURNS` now gets a direct repair hint naming the missing type and showing a supported example such as `NUMBER`.