mongoose-diff-tracking/example/node_modules/oad-utils/src/sort-by-notation.js

Manage Mongo Collection diff History and versions

// @flow

import type {
  SortNotation,
} from 'mongolike-operations'

export function sortByNotation<T: Object>(arr: Array<T>, sortNotation: SortNotation): Array<T> {
  const newArr = arr.slice()
  const sortDnStrs = Object.keys(sortNotation)
  newArr.sort((a, b) => {
    for (const sortDnStr of sortDnStrs) {
      const valA = a[sortDnStr]
      const valB = b[sortDnStr]
      if (valA !== valB) {
        const direction = sortNotation[sortDnStr]
        return valA > valB ? direction : (direction ^ -1) + 1
      }
    }
    return 0
  })
  return newArr
}