Function shouldHideSelectedOptions

packages/react-select/src/Select.tsx:611–621

(
  props: Props<Option, IsMulti, Group>
)

}

const shouldHideSelectedOptions = <
  Option,
  IsMulti extends boolean,
  Group extends GroupBase<Option>
>(
  props: Props<Option, IsMulti, Group>
) => {
  const { hideSelectedOptions, isMulti } = props;
  if (hideSelectedOptions === undefined) return isMulti;
  return hideSelectedOptions;
};

let instanceId = 1;