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// Filters particular values out of a list. Note that this will always
// completely skip over null, but can be used to filter out any other
// primitive or object value.
//
// See also:
// - fillMissingListItems
//
// More list utilities:
// - withFilteredList, withMappedList, withSortedList
// - withFlattenedList, withUnflattenedList
// - withPropertyFromList, withPropertiesFromList
//
import {input, templateCompositeFrom} from '#composite';
import {empty} from '#sugar';
export default templateCompositeFrom({
annotation: `excludeFromList`,
inputs: {
list: input(),
item: input({defaultValue: null}),
items: input({type: 'array', defaultValue: null}),
},
outputs: ({
[input.staticDependency('list')]: list,
}) => [list ?? '#list'],
steps: () => [
{
dependencies: [
input.staticDependency('list'),
input('list'),
input('item'),
input('items'),
],
compute: (continuation, {
[input.staticDependency('list')]: listName,
[input('list')]: listContents,
[input('item')]: excludeItem,
[input('items')]: excludeItems,
}) => continuation({
[listName ?? '#list']:
listContents.filter(item => {
if (excludeItem !== null && item === excludeItem) return false;
if (!empty(excludeItems) && excludeItems.includes(item)) return false;
return true;
}),
}),
},
],
});
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