((a) => {}).length;
typeof (() => {});
export default (() => {})();
(() => {})()``;
(() => {})``;
new (() => {})();
if ((() => {}) ? 1 : 0) {
}
let f = () => ({}());
let a = () => ({} instanceof a);
a = () => ({} && a);
a = () => ({}() && a);
a = () => ({} && a && b);
a = () => ({} + a);
a = () => ({}()() && a);
a = () => ({}.b && a);
a = () => ({}[b] && a);
a = () => ({}`` && a);
a = () => ({} = 0);
a = () => ({}, a);
(a) => a instanceof {};
(a) => ({}().b && 0);
(a) => ({}().c = 0);
(x) => ({}()());
(x) => ({}()``);
(x) => ({}().b);
a = (b) => c;
(x) => (y = z);
(x) => (y += z);
f((a) => ({})) + 1;
((a) => ({})) || 0;
a = (b) => c;
a = (b) => {
  return c;
};