Function makeLongProxyChain

tests/xs/issues/__743.js:20–28

(startObject = emptyFunction)

};
let seenStartObjects = new Map();
function makeLongProxyChain(startObject = emptyFunction) {
    if (seenStartObjects.has(startObject))
        return seenStartObjects.get(startObject);
    let p = new Proxy(startObject, {});
    for (let i = 0; i < 500000; i++)
        p = new Proxy(p, {});
    seenStartObjects.set(startObject, p);
    return p;
}
shouldThrowStackOverflow(function longProxyChain() {
    let f = makeLongProxyChain();
    f.name;