mingo/esm/operators/pipeline/facet.js

MongoDB query language for in-memory objects

import { Aggregator } from "../../aggregator";
import { ComputeOptions, ProcessingMode } from "../../core/_internal";
const $facet = (collection, expr, options) => {
  if (!(options.processingMode & ProcessingMode.CLONE_INPUT)) {
    options = {
      ...ComputeOptions.init(options).options,
      processingMode: ProcessingMode.CLONE_INPUT
    };
  }
  return collection.transform(((array) => {
    const o = {};
    for (const [k, pipeline] of Object.entries(expr)) {
      o[k] = new Aggregator(pipeline, options).run(array);
    }
    return [o];
  }));
};
export {
  $facet
};