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Spring Boot + Angular/React/Vue in one handy generator

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export class ArrayRecombiner { static standard(opt) { return async (results, originalItems) => { const iterator = await results(); const itemMap = new Map(); const items = []; for await (const result of iterator) { const index = result.metadata().index; const text = result.text(); if (opt.unique && itemMap.has(text)) { continue; } if (opt.limit && items.length >= opt.limit) { break; } itemMap.set(text, index); items.push({ item: originalItems[index], index, }); } const sorted = opt.sort && opt.sort === 'index' ? items.sort((a, b) => a.index - b.index) : items; return sorted.map(x => x.item); }; } }