swc/crates/swc_ecma_minifier/tests/fixture/issues/7969/input.js

let a = 0;
function f(arr) {
    let b = a;
    return `${arr.map((child) => {
        a = b + "str";
    })}`;
}

function g(arr) {
    return f(arr);
}
globalThis.g = g;
g([1, 2, 3])
console.log(a);