x Expected ';', '}' or <eof>
   ,-[$DIR/tests/test262-parser/fail/4ff4b78ff3e2de6e.js:1:1]
 1 | (a) => {}()
   :          ^
   `----

Error: 
  > This is the expression part of an expression statement
   ,-[$DIR/tests/test262-parser/fail/4ff4b78ff3e2de6e.js:1:1]
 1 | (a) => {}()
   : ^^^^^^^^^
   `----