Module observe 

Structured progress and warning channels for library callers.

Structs

CollectingWarnings

Warning sink useful for embedders and tests that need to inspect warnings.

NoopProgress

Default progress sink for callers that do not care about progress.

NoopWarnings

Default warning sink for callers that do not care about warnings.

TaskId

Stable progress task identifier.

Warning

Structured warning for embedders and render layers.

Enums

ProgressEvent

Structured progress event emitted by long-running operations.

Traits

ProgressSink

Receives structured progress events.

WarningSink

Receives structured warnings that should not be printed by domain crates.