@datorama/akita
Version:
State Management Tailored-Made for JS Applications
41 lines • 4.54 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { hasEntity } from './hasEntity';
// @internal
/**
* @template S, E
* @param {?} __0
* @return {?}
*/
export function addEntities({ state, entities, idKey, options = {}, preAddEntity }) {
/** @type {?} */
let newEntities = {};
/** @type {?} */
let newIds = [];
/** @type {?} */
let hasNewEntities = false;
for (const entity of entities) {
if (hasEntity(state.entities, entity[idKey]) === false) {
// evaluate the middleware first to support dynamic ids
/** @type {?} */
const current = preAddEntity(entity);
/** @type {?} */
const entityId = current[idKey];
newEntities[entityId] = current;
if (options.prepend)
newIds.unshift(entityId);
else
newIds.push(entityId);
hasNewEntities = true;
}
}
return hasNewEntities
? {
newState: Object.assign({}, state, { entities: Object.assign({}, state.entities, newEntities), ids: options.prepend ? [...newIds, ...state.ids] : [...state.ids, ...newIds] }),
newIds
}
: null;
}
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