plane/space/components/issues/board-views/kanban/header.tsx

// mobx react lite
import { observer } from "mobx-react-lite";
// interfaces
// constants
import { StateGroupIcon } from "@plane/ui";
import { issueGroupFilter } from "@/constants/data";
// ui
// mobx hook
import { useMobxStore } from "@/lib/mobx/store-provider";
import { RootStore } from "@/store/root.store";
import { IIssueState } from "types/issue";

export const IssueKanBanHeader = observer(({ state }: { state: IIssueState }) => {
  const store: RootStore = useMobxStore();

  const stateGroup = issueGroupFilter(state.group);

  if (stateGroup === null) return <></>;

  return (
    <div className="flex items-center gap-2 px-2 pb-2">
      <div className="flex h-3.5 w-3.5 flex-shrink-0 items-center justify-center">
        <StateGroupIcon stateGroup={state.group} color={state.color} height="14" width="14" />
      </div>
      <div className="mr-1 truncate font-semibold capitalize text-custom-text-200">{state?.name}</div>
      <span className="flex-shrink-0 rounded-full text-custom-text-300">
        {store.issue.getCountOfIssuesByState(state.id)}
      </span>
    </div>
  );
});