Type Alias: NestLensPreset

NestLensPreset = "failures-only"

Defined in: presets.ts:23

A configuration written out for a job people keep having to write themselves.

Recording only what failed, in production, takes five settings that are only correct together — and one of them, the order in which sampling and the filter run, is stated nowhere but in the collector's source. An application reported reaching it at a hundred lines of configuration, arrived at by reading collector.service.ts:

sampling.rate 0, so nothing ordinary is kept sampling.always the types that are still kept — and filter never sees what this drops, which is the part nobody guesses filter narrows those types down to their failures captureResponse off, because a payload is built before sampling is asked traceFieldResolvers off, for the same reason

That is knowledge the library has and the reader should not need to rediscover. preset puts it in the package.