function getListItems()

in src/select/select.tsx [253:335]

• 71 lines of code
• 32 McCabe index (conditional complexity)

function getListItems<T = unknown>(
  props: SelectProps<T>,
  state: Partial<SelectState<T>>,
  rawFilterString: string,
  data = props.data,
) {
  let filterString = rawFilterString.trim();

  if (
    isInputMode(props.type) &&
    !props.allowAny &&
    state.selected &&
    !Array.isArray(state.selected) &&
    filterString === state.selected.label
  ) {
    filterString = ''; // ignore multiple if it is exactly the selected item
  }
  const lowerCaseString = filterString.toLowerCase();

  const filteredData = [];
  let exactMatch = false;

  const check = getFilterFn(props.filter);

  for (let i = 0; i < data.length; i++) {
    const item = {...data[i]};
    if (check(item, lowerCaseString, data)) {
      exactMatch = item.label === filterString;

      if (props.multiple && !(typeof props.multiple === 'object' && props.multiple.removeSelectedItems)) {
        item.checkbox = !!state.multipleMap?.[item.key];
      }

      if (
        props.multiple &&
        typeof props.multiple === 'object' &&
        props.multiple.limit &&
        Array.isArray(state.selected)
      ) {
        item.disabled =
          props.multiple.limit === state.selected.length &&
          !state.selected.find(selectedItem => selectedItem.key === item.key);
      }

      // Ignore item if it's multiple and is already selected
      if (
        !(
          props.multiple &&
          typeof props.multiple === 'object' &&
          props.multiple.removeSelectedItems &&
          state.multipleMap?.[item.key]
        )
      ) {
        filteredData.push(item);
      }
    }
  }

  let addButton = null;
  const {add} = props;
  if ((add && filterString && !exactMatch) || (add && add.alwaysVisible)) {
    if (
      (!(add.regexp && !add.regexp.test(filterString)) && !(add.minlength && filterString.length < +add.minlength)) ||
      add.alwaysVisible
    ) {
      let label;

      if (add.label) {
        label = typeof add.label === 'function' ? add.label(filterString) : add.label;
      } else {
        label = filterString;
      }

      addButton = {
        prefix: add.prefix,
        label,
        delayed: add.delayed ?? true,
      };
    }
  }

  return {filteredData, addButton};
}