export default function addFilter()

in packages/search-ui/src/actions/addFilter.ts [15:54]

• 33 lines of code
• 8 McCabe index (conditional complexity)

export default function addFilter(
  name: string,
  value: FilterValue,
  type: FilterType = "all",
  persistent?: boolean
): void {
  // eslint-disable-next-line no-console
  if (this.debug) console.log("Search UI: Action", "addFilter", ...arguments);

  const { filters } = this.state as RequestState;

  const existingFilter =
    filters.find((f) => f.field === name && f.type === type) || null;
  const allOtherFilters =
    filters.filter((f) => f.field !== name || f.type !== type) || [];
  const existingFilterValues = existingFilter?.values || [];

  const newFilterValues = existingFilterValues.find((existing) =>
    doFilterValuesMatch(existing, value)
  )
    ? existingFilterValues
    : existingFilterValues.concat(value);

  this._updateSearchResults({
    current: 1,
    filters: [
      ...allOtherFilters,
      { field: name, values: newFilterValues, type, persistent }
    ]
  });

  const events: Events = this.events;

  events.emit({
    type: "FacetFilterSelected",
    field: name,
    value: serialiseFilter(newFilterValues),
    query: this.state.searchTerm
  });
}