fix(parse): Synchronize after statement parse errors

Rather than infinitely reporting an error at the same location (not very
helpful), we should move on to the next statement boundary (only a
':' or newline so far) and continue parsing.

src/parser/index.ts

@@ -40,6 +40,7 @@ function declaration(): Statement | undefined {
 
         return statement();
     } catch (error) {
+        synchronize();
         return;
     }
 }