@ngrx/entity
Version:
Common utilities for entity reducers
25 lines • 4 kB
JavaScript
import { createSelector } from '@ngrx/store';
export function createSelectorsFactory() {
function getSelectors(selectState) {
const selectIds = (state) => state.ids;
const selectEntities = (state) => state.entities;
const selectAll = createSelector(selectIds, selectEntities, (ids, entities) => ids.map((id) => entities[id]));
const selectTotal = createSelector(selectIds, (ids) => ids.length);
if (!selectState) {
return {
selectIds,
selectEntities,
selectAll,
selectTotal,
};
}
return {
selectIds: createSelector(selectState, selectIds),
selectEntities: createSelector(selectState, selectEntities),
selectAll: createSelector(selectState, selectAll),
selectTotal: createSelector(selectState, selectTotal),
};
}
return { getSelectors };
}
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