electron/docs/api/structures/trace-categories-and-options.md

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# TraceCategoriesAndOptions Object
* `categoryFilter` String - A filter to control what category groups
should be traced. A filter can have an optional '-' prefix to exclude
category groups that contain a matching category. Having both included
and excluded category patterns in the same list is not supported. Examples:
`test_MyTest*`, `test_MyTest*,test_OtherStuff`, `-excluded_category1,-excluded_category2`.
* `traceOptions` String - Controls what kind of tracing is enabled,
it is a comma-delimited sequence of the following strings:
`record-until-full`, `record-continuously`, `trace-to-console`, `enable-sampling`, `enable-systrace`,
e.g. `'record-until-full,enable-sampling'`.
The first 3 options are trace recording modes and hence mutually exclusive.
If more than one trace recording modes appear in the `traceOptions` string,
the last one takes precedence. If none of the trace recording modes are
specified, recording mode is `record-until-full`.
The trace option will first be reset to the default option (`record_mode` set
to `record-until-full`, `enable_sampling` and `enable_systrace`
set to `false`) before options parsed from `traceOptions` are applied on it.