message: Add stringify facets
diff: @@ -56,6 +56,13 @@ export const tokenizeSearch = (search: string): AdvancedSearchVariables => {
  }
  }
  +export const stringifyFacet = (
  + field: 'where' | 'what' | 'fields',
  + filter: WhereEnum | WhatEnum | FieldsEnum
  +) => {
  + return `${field}:${filter.toLowerCase()}`
  +}
  +
  const mapFacets = function(type) {
  return function(facet) {
  return `${type}:${facet.toLowerCase()}`
  