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// Shorthand for exiting if the contribution list (usually a property's update
// value) resolves to empty - ensuring that the later computed results are only
// returned if these contributions are present.
import {input, templateCompositeFrom} from '#composite';
import {isContributionList} from '#validators';
import {withResultOfAvailabilityCheck} from '#composite/control-flow';
import withResolvedContribs from './withResolvedContribs.js';
export default templateCompositeFrom({
annotation: `exitWithoutContribs`,
inputs: {
contribs: input({
validate: isContributionList,
acceptsNull: true,
}),
value: input({defaultValue: null}),
},
steps: () => [
withResolvedContribs({
from: input('contribs'),
}),
// TODO: Fairly certain exitWithoutDependency would be sufficient here.
withResultOfAvailabilityCheck({
from: '#resolvedContribs',
mode: input.value('empty'),
}),
{
dependencies: ['#availability', input('value')],
compute: (continuation, {
['#availability']: availability,
[input('value')]: value,
}) =>
(availability
? continuation()
: continuation.exit(value)),
},
],
});
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