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fingerprint

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fingerprint(report): string

Defined in: diagnostics/events.ts:122

The identity two occurrences of the same problem share.

Message + source + the first stack frame. The message alone would merge two unrelated “Cannot read properties of undefined” into one event and hide a second bug behind the first; the WHOLE stack would split one bug into a dozen events whenever it is reached through different callers, which is the failure that makes a crash reporter useless at exactly the moment it is needed.

Numbers in the message are normalized away, because an error carrying an entity id or a frame count would otherwise be a brand-new problem every time it happened.

DiagnosticReport

string