easy-mongo-orm/dist/operations/aggregation.js

A powerful and elegant MongoDB/Mongoose toolkit that makes database operations a breeze with built-in caching, search, pagination, performance monitoring, soft delete, versioning, data export/import, schema validation, and migration utilities

"use strict";

const efficientAggregation = async (Model, pipeline, options = {}) => {
  const {
    allowDiskUse = true,
    batchSize = 1000,
    maxTimeMS = 60000
  } = options;
  return Model.aggregate(pipeline).allowDiskUse(allowDiskUse).option({
    maxTimeMS
  }).option({
    cursor: {
      batchSize
    }
  });
};
const groupBy = field => ({
  $group: {
    _id: `$${field}`,
    count: {
      $sum: 1
    }
  }
});
const matchCondition = condition => ({
  $match: condition
});
const sortByField = (field, direction = 1) => ({
  $sort: {
    [field]: direction
  }
});
module.exports = {
  efficientAggregation,
  groupBy,
  matchCondition,
  sortByField
};