swc/ecmascript/minifier/tests/terser/compress/functions/inner_ref/input.js

console.log(
    (function (a) {
        return (function () {
            return a + 1;
        })();
    })(1),
    (function (a) {
        return (function (a) {
            return a === undefined;
        })();
    })(2)
);