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// Excludes duplicate items from a list and provides the results, overwriting
// the list in-place, if possible.
import {input, templateCompositeFrom} from '#composite';
import {unique} from '#sugar';
export default templateCompositeFrom({
annotation: `withUniqueItemsOnly`,
inputs: {
list: input({type: 'array'}),
},
outputs: ({
[input.staticDependency('list')]: list,
}) => [list ?? '#uniqueItems'],
steps: () => [
{
dependencies: [input('list')],
compute: (continuation, {
[input('list')]: list,
}) => continuation({
['#values']:
unique(list),
}),
},
{
dependencies: ['#values', input.staticDependency('list')],
compute: (continuation, {
'#values': values,
[input.staticDependency('list')]: list,
}) => continuation({
[list ?? '#uniqueItems']:
values,
}),
},
],
});
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