All files / src/bundle/strategies per-spa-instance.ts

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import { Container, ModelItem, RootContainer } from '../model/types';
import { BundleConfig, Strategy } from '../types';
import { extractDuplicates, flatMap } from '../utils/array';
 
const isContainer = (item: ModelItem): item is Container => Object.prototype.hasOwnProperty.call(item, 'children');
 
const getClassIds = (item: ModelItem): Array<string> => {
  const children = isContainer(item) ? flatMap(item.children, getClassIds) : [];
  return [item.classId, ...children];
};
 
export const perSpaStrategy: Strategy = (modelItems: Array<RootContainer>): BundleConfig[] => {
  if (modelItems.length === 0) {
    return [];
  }
  const config = modelItems
    .map((root) => [...new Set(flatMap(root.children, getClassIds))])
    .filter((i) => i.length !== 0);
  return extractDuplicates(config);
};