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fix(js): console.log(Error) must not trigger Error.prepareStackTrace

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deviceandbrowserinfo.com detects CDP by setting Error.prepareStackTrace as a spy, then calling console.log(new Error()). _consoleFn accessed a.stack, which fires prepareStackTrace if set. Fix: save/clear/restore around the .stack access.
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SGavrl authored and GitHub committed 2026-06-10 20:48:45 +00:00
1 parent 534de77882
commit 3c92c36862
2 files changed
+22 -1
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crates/obscura-js/js/bootstrap.js
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+7 -1
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@@ -212,7 +212,13 @@ const _consoleFn = (level, args) => {
try { Deno.core.ops.op_console_msg(level, args.map(a => {
if (a === null) return "null";
if (a === undefined) return "undefined";
if (a instanceof Error) return a.stack || a.message || String(a);
if (a instanceof Error) {
const _pst = Error.prepareStackTrace;
if (_pst !== undefined) Error.prepareStackTrace = undefined;
const _s = a.stack || a.message || String(a);
if (_pst !== undefined) Error.prepareStackTrace = _pst;
return _s;
}
if (typeof a === "object") {
try {
const s = JSON.stringify(a);