fix: allow for "if else" constructs

Author: heyzec

server/src/rules/ifStatement.ts

@@ -11,7 +11,7 @@ export const ifStatementRule = new class extends Rule<IfStatement> {
       ast.addDiagnostic(`Missing "else" in "if-else" statement`, DiagnosticSeverity.Error, { start: child.loc!.start, end: child.consequent.loc!.start });
     if (child.consequent.type !== STATEMENTS.BLOCK)
       ast.addDiagnostic("Missing curly braces around if", DiagnosticSeverity.Error, child.consequent.loc!);
-    if (child.alternate && child.alternate.type !== STATEMENTS.BLOCK)
+    if (child.alternate && child.alternate.type !== STATEMENTS.BLOCK && child.alternate.type !== STATEMENTS.IF)
       ast.addDiagnostic("Missing curly braces around else", DiagnosticSeverity.Error, child.alternate.loc!);
   }
-}();
+}();