((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;
};