Improve Defer Trigger Misconfiguration#67497
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…ger options Ensures that viewport `@defer` trigger prefetch warnings occur when the viewport options are identical, including cases with empty or no parameters.
Extends the extended diagnostic for `@defer` trigger misconfiguration to include `on idle` triggers
Emit a warning when an `@defer` block uses `prefetch` triggers but does not define an explicit main trigger. Closes angular#52746
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On top #65553
Add two commits
Add diagnostics for idle prefetch triggers
Since adding support for
@defer (on idle(500ms)), someidle+prefetchtiming combinations are not detected correctly.@defer (on idle(500ms); prefetch on idle(200ms) ) { <heavy-comp /> }Currently, this throws an error that is actually incorrect
Adds warning for prefetch without main defer trigger
Relative to #52746 and according examples in documentation
For example
@defer (prefetch when someFlag) { <heavy-comp /> }This configuration may suggest that the prefetch will only run when someFlag becomes true.
However, since the main trigger still defaults to on idle, the deferred content can be fetched earlier during the browser’s idle period, effectively bypassing the intended condition.
Closes #52746