Filter third-party exceptions from error tracking - #78
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Jingxi-Polymaker merged 2 commits intoSep 10, 2026
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Add a before_send hook to the browser PostHog init in analytics.js. It keeps an exception only when a stack frame comes from our own origin, so errors raised entirely by vendor scripts (Klaviyo, Google, CDNs) and frameless browser noise never reach error tracking. Full URLs are classified by host. Frames reported as a host-stripped path are matched against our own first-party script names, which the added test keeps in sync with the same-origin script tags in index.html. Generated-By: PostHog Desktop Task-Id: ff9aa956-f330-440e-b78c-4d4519c7efc4
Jingxi-Polymaker
marked this pull request as ready for review
September 10, 2026 08:22
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Third-party script exceptions create error-tracking noise. Add a PostHog
before_sendhook that drops an exception only when every frame in every exception entry is identifiable as third-party code.HTTP(S) and protocol-relative URLs are classified by hostname. Klaviyo's known
/onsite/js/paths are also recognized when the hostname has been stripped. Same-host frames, unfamiliar paths, inline page scripts, malformed entries, and missing stacks are retained. This deliberately preserves frameless errors, including ResizeObserver/ProgressEvent reports, rather than assuming that missing origin information proves third-party ownership. Non-exception events pass through unchanged.Validation:
npm run test:all: 262 tests pass.