[inspector] Improve class name inference.
Previously having a `Symbol.toStringTag` property holding a string somewhere in the prototype chain would always take predence over trying to determine a reasonable name from the "constructor" (in case of subclassing). This would lead to confusing behavior when diagnosing objects in DevTools, for example ```js class A extends URLSearchParams {}; new A() ``` would show `URLSearchParam` as class name for the instance rather than `A`. With this CL, we change the lookup logic to explicitly check for `Symbol.toStringTag` and "constructor" along each step of the prototype chain (skipping the "constructor" for the leaf object) and pick the first one that yields a string (that is the function debug name in case of "constructor"). Fixed: chromium:980018 Change-Id: Ic920b4bae02f965bc383c711f8de89c0de55fcac Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231078 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Kim-Anh Tran <kimanh@chromium.org> Auto-Submit: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Kim-Anh Tran <kimanh@chromium.org> Cr-Commit-Position: refs/heads/main@{#77453}
Showing
Please
register
or
sign in
to comment