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fix(analytics): drop file:// exceptions from error tracking #19792

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fix(analytics): drop file:// exceptions from error tracking #19792

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14 changes: 10 additions & 4 deletions gatsby/onPreBootstrap.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -82,12 +82,18 @@ posthog.init("${process.env.GATSBY_POSTHOG_API_KEY}", {
error_tracking: {
__capturePostHogExceptions: true,
},
// Drop exceptions coming from local dev servers so developers' local
// exceptions (e.g. Gatsby dev-server ChunkLoadErrors on hot recompiles)
// don't pollute production error tracking. Real users are never on localhost.
// Drop exceptions that no real visitor can hit, so they don't pollute
// production error tracking. Local dev servers (localhost/127.0.0.1) throw
// Gatsby ChunkLoadErrors on hot recompiles. A page saved to disk and opened
// over file:// boots Gatsby, finds no page-data for the local file path, and
// throws; its hostname is empty, so check the protocol too.
before_send: function (event) {
var hostname = window.location.hostname
if (event && event.event === '$exception' && (hostname === 'localhost' || hostname === '127.0.0.1')) {
if (
event &&
event.event === '$exception' &&
(hostname === 'localhost' || hostname === '127.0.0.1' || window.location.protocol === 'file:')
) {
return null
}
return event
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