Source code
Revision control
Copy as Markdown
Other Tools
/* Any copyright is dedicated to the Public Domain.
function logProxy(object = {}, handler = {}) {
var log = [];
var proxy = new Proxy(object, new Proxy(handler, {
get(target, propertyKey, receiver) {
log.push(propertyKey);
return target[propertyKey];
}
}));
return {proxy, log};
}
var {proxy, log} = logProxy();
Object.preventExtensions(proxy);
assertDeepEq(log, ["preventExtensions"]);
var {proxy, log} = logProxy();
Object.preventExtensions(Object.preventExtensions(proxy));
assertDeepEq(log, ["preventExtensions", "preventExtensions"]);
reportCompare(0, 0);