fixed some bugs

ast/ast.go

@@ -175,7 +175,10 @@ func (be *BinaryExpression) String() string {
 type BlockExpression struct {
 	Token       token.Token // The '{'
 	Expressions []Expression
-	ReturnExpression Expression // A expression that does not end with a semicolon, there can only be one of those and it hast to be at the end
+	// NOTE: Nullable
+	//
+	// A expression that does not end with a semicolon, there can only be one of those and it has to be at the end
+	ReturnExpression Expression
 }
 
 func (be *BlockExpression) expressionNode()      {}

build/task.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"runtime/debug"
 	"slices"
 	"strings"
 
@@ -149,7 +150,7 @@ func build(outputWriter io.Writer, input string, output string, toPrint ToPrintF
 
 	defer func() {
 		if panicErr := recover(); panicErr != nil {
-			err = fmt.Errorf("panic in build: %#v", panicErr)
+			err = fmt.Errorf("panic in build: %#v\n%s", panicErr, debug.Stack())
 		}
 	}()
 

test.tt

@@ -8,6 +8,6 @@ fn main() = {
     else {
         hi = 1
     };
-
-    test2
 };
+
+fn test2() = {};

typechecker/variable_resolution.go

@@ -118,7 +118,9 @@ func VarResolveExpr(s *Scope, e ast.Expression) error {
 		for _, e := range e.Expressions {
 			errs = append(errs, VarResolveExpr(&newS, e))
 		}
+		if e.ReturnExpression != nil {
 			errs = append(errs, VarResolveExpr(&newS, e.ReturnExpression))
+		}
 
 		return errors.Join(errs...)
 	case *ast.IfExpression:
@@ -145,7 +147,7 @@ func VarResolveExpr(s *Scope, e ast.Expression) error {
 			return errorf(e.Token, "variable %q redefined", e.Identifier)
 		}
 
-		s.SetUniq(e.Identifier)
+		e.Identifier = s.SetUniq(e.Identifier)
 	case *ast.VariableReference:
 		v, ok := s.Get(e.Identifier)
 		if !ok {