const LINE_DISPLAY_NAMES: Record<string, string> = {
  yosan: "予讃線",
  koutoku: "高徳線",
  tokushima: "徳島線",
  dosan: "土讃線",
  dosan2: "土讃線",
  uwajima: "予讃線",
  uwajima2: "予讃線／愛ある伊予灘線",
  naruto: "鳴門線",
  seto: "瀬戸大橋線",
};

export const lineDisplayName = (lineId: string | undefined): string =>
  lineId ? LINE_DISPLAY_NAMES[lineId] ?? lineId : "";