import {Document, SimpleDocumentSearchResultSetUnit} from 'flexsearch' export interface withId { id: number, } const indexes: { [k: string]: Document } = {} export const createNewIndexer = (name: string, fieldsToIndex: string[]) => { if (typeof indexes[name] === 'undefined') { indexes[name] = new Document({ tokenize: 'full', document: { id: 'id', index: fieldsToIndex, }, }) } const index = indexes[name] function add(item: withId) { return index.add(item.id, item) } function remove(item: withId) { return index.remove(item.id) } function update(item: withId) { return index.update(item.id, item) } function search(query: string | null): number[] | null { if (query === '' || query === null) { return null } // @ts-ignore return index.search(query) ?.flatMap(r => r.result) .filter((value, index, self) => self.indexOf(value) === index) || null } return { add, remove, update, search, } }