const M = new Map<string, string>([
  ["\u002C", "\u002E"],
  ["\u005B", "\u0028"],
  ["\u005D", "\u0029"],
  ["\u007B", "\u0028"],
  ["\u007D", "\u0029"],
  ["\u00A5", "\u005C"],
  ["\u3014", "\u0028"],
  ["\u3015", "\u0029"],
  ["\u3000", "\u0020"],
  ["\u3001", "\u002e"],
  ["\u3002", "\u002e"],
  ["\u300c", "\uff62"],
  ["\u300d", "\uff63"],
  ["\u3041", "\uff71"],
  ["\u3042", "\uff71"],
  ["\u3043", "\uff72"],
  ["\u3044", "\uff72"],
  ["\u3045", "\uff73"],
  ["\u3046", "\uff73"],
  ["\u3047", "\uff74"],
  ["\u3048", "\uff74"],
  ["\u3049", "\uff75"],
  ["\u304a", "\uff75"],
  ["\u304b", "\uff76"],
  ["\u304c", "\uff76\uff9e"],
  ["\u304d", "\uff77"],
  ["\u304e", "\uff77\uff9e"],
  ["\u304f", "\uff78"],
  ["\u3050", "\uff78\uff9e"],
  ["\u3051", "\uff79"],
  ["\u3052", "\uff79\uff9e"],
  ["\u3053", "\uff7a"],
  ["\u3054", "\uff7a\uff9e"],
  ["\u3055", "\uff7b"],
  ["\u3056", "\uff7b\uff9e"],
  ["\u3057", "\uff7c"],
  ["\u3058", "\uff7c\uff9e"],
  ["\u3059", "\uff7d"],
  ["\u305a", "\uff7d\uff9e"],
  ["\u305b", "\uff7e"],
  ["\u305c", "\uff7e\uff9e"],
  ["\u305d", "\uff7f"],
  ["\u305e", "\uff7f\uff9e"],
  ["\u305f", "\uff80"],
  ["\u3060", "\uff80\uff9e"],
  ["\u3061", "\uff81"],
  ["\u3062", "\uff81\uff9e"],
  ["\u3063", "\uff82"],
  ["\u3064", "\uff82"],
  ["\u3065", "\uff82\uff9e"],
  ["\u3066", "\uff83"],
  ["\u3067", "\uff83\uff9e"],
  ["\u3068", "\uff84"],
  ["\u3069", "\uff84\uff9e"],
  ["\u306a", "\uff85"],
  ["\u306b", "\uff86"],
  ["\u306c", "\uff87"],
  ["\u306d", "\uff88"],
  ["\u306e", "\uff89"],
  ["\u306f", "\uff8a"],
  ["\u3070", "\uff8a\uff9e"],
  ["\u3071", "\uff8a\uff9f"],
  ["\u3072", "\uff8b"],
  ["\u3073", "\uff8b\uff9e"],
  ["\u3074", "\uff8b\uff9f"],
  ["\u3075", "\uff8c"],
  ["\u3076", "\uff8c\uff9e"],
  ["\u3077", "\uff8c\uff9f"],
  ["\u3078", "\uff8d"],
  ["\u3079", "\uff8d\uff9e"],
  ["\u307a", "\uff8d\uff9f"],
  ["\u307b", "\uff8e"],
  ["\u307c", "\uff8e\uff9e"],
  ["\u307d", "\uff8e\uff9f"],
  ["\u307e", "\uff8f"],
  ["\u307f", "\uff90"],
  ["\u3080", "\uff91"],
  ["\u3081", "\uff92"],
  ["\u3082", "\uff93"],
  ["\u3083", "\uff94"],
  ["\u3084", "\uff94"],
  ["\u3085", "\uff95"],
  ["\u3086", "\uff95"],
  ["\u3087", "\uff96"],
  ["\u3088", "\uff96"],
  ["\u3089", "\uff97"],
  ["\u308a", "\uff98"],
  ["\u308b", "\uff99"],
  ["\u308c", "\uff9a"],
  ["\u308d", "\uff9b"],
  ["\u308e", "\uff9c"],
  ["\u308f", "\uff9c"],
  ["\u3090", "\uff72"],
  ["\u3091", "\uff74"],
  ["\u3092", "\uff75"],
  ["\u3093", "\uff9d"],
  ["\u3094", "\uff73\uff9e"],
  ["\u3095", "\uff76"],
  ["\u3096", "\uff79"],
  ["\u3099", "\uff9e"],
  ["\u309a", "\uff9f"],
  ["\u30a1", "\uff71"],
  ["\u30a2", "\uff71"],
  ["\u30a3", "\uff72"],
  ["\u30a4", "\uff72"],
  ["\u30a5", "\uff73"],
  ["\u30a6", "\uff73"],
  ["\u30a7", "\uff74"],
  ["\u30a8", "\uff74"],
  ["\u30a9", "\uff75"],
  ["\u30aa", "\uff75"],
  ["\u30ab", "\uff76"],
  ["\u30ac", "\uff76\uff9e"],
  ["\u30ad", "\uff77"],
  ["\u30ae", "\uff77\uff9e"],
  ["\u30af", "\uff78"],
  ["\u30b0", "\uff78\uff9e"],
  ["\u30b1", "\uff79"],
  ["\u30b2", "\uff79\uff9e"],
  ["\u30b3", "\uff7a"],
  ["\u30b4", "\uff7a\uff9e"],
  ["\u30b5", "\uff7b"],
  ["\u30b6", "\uff7b\uff9e"],
  ["\u30b7", "\uff7c"],
  ["\u30b8", "\uff7c\uff9e"],
  ["\u30b9", "\uff7d"],
  ["\u30ba", "\uff7d\uff9e"],
  ["\u30bb", "\uff7e"],
  ["\u30bc", "\uff7e\uff9e"],
  ["\u30bd", "\uff7f"],
  ["\u30be", "\uff7f\uff9e"],
  ["\u30bf", "\uff80"],
  ["\u30c0", "\uff80\uff9e"],
  ["\u30c1", "\uff81"],
  ["\u30c2", "\uff81\uff9e"],
  ["\u30c3", "\uff82"],
  ["\u30c4", "\uff82"],
  ["\u30c5", "\uff82\uff9e"],
  ["\u30c6", "\uff83"],
  ["\u30c7", "\uff83\uff9e"],
  ["\u30c8", "\uff84"],
  ["\u30c9", "\uff84\uff9e"],
  ["\u30ca", "\uff85"],
  ["\u30cb", "\uff86"],
  ["\u30cc", "\uff87"],
  ["\u30cd", "\uff88"],
  ["\u30ce", "\uff89"],
  ["\u30cf", "\uff8a"],
  ["\u30d0", "\uff8a\uff9e"],
  ["\u30d1", "\uff8a\uff9f"],
  ["\u30d2", "\uff8b"],
  ["\u30d3", "\uff8b\uff9e"],
  ["\u30d4", "\uff8b\uff9f"],
  ["\u30d5", "\uff8c"],
  ["\u30d6", "\uff8c\uff9e"],
  ["\u30d7", "\uff8c\uff9f"],
  ["\u30d8", "\uff8d"],
  ["\u30d9", "\uff8d\uff9e"],
  ["\u30da", "\uff8d\uff9f"],
  ["\u30db", "\uff8e"],
  ["\u30dc", "\uff8e\uff9e"],
  ["\u30dd", "\uff8e\uff9f"],
  ["\u30de", "\uff8f"],
  ["\u30df", "\uff90"],
  ["\u30e0", "\uff91"],
  ["\u30e1", "\uff92"],
  ["\u30e2", "\uff93"],
  ["\u30e3", "\uff94"],
  ["\u30e4", "\uff94"],
  ["\u30e5", "\uff95"],
  ["\u30e6", "\uff95"],
  ["\u30e7", "\uff96"],
  ["\u30e8", "\uff96"],
  ["\u30e9", "\uff97"],
  ["\u30ea", "\uff98"],
  ["\u30eb", "\uff99"],
  ["\u30ec", "\uff9a"],
  ["\u30ed", "\uff9b"],
  ["\u30ef", "\uff9c"],
  ["\u30f2", "\uff75"],
  ["\u30f3", "\uff9d"],
  ["\u30f4", "\uff73\uff9e"],
  ["\u30f7", "\uff9c\uff9e"],
  ["\u30fa", "\uff75\uff9e"],
  ["\u30fb", "\u002e"],
  ["\u30fc", "\u002d"],
  ["\uff08", "\u0028"],
  ["\uff09", "\u0029"],
  ["\uff0c", "\u002e"],
  ["\uff0d", "\u002d"],
  ["\uff0e", "\u002e"],
  ["\uff0f", "\u002f"],
  ["\uff10", "\u0030"],
  ["\uff11", "\u0031"],
  ["\uff12", "\u0032"],
  ["\uff13", "\u0033"],
  ["\uff14", "\u0034"],
  ["\uff15", "\u0035"],
  ["\uff16", "\u0036"],
  ["\uff17", "\u0037"],
  ["\uff18", "\u0038"],
  ["\uff19", "\u0039"],
  ["\uff21", "\u0041"],
  ["\uff22", "\u0042"],
  ["\uff23", "\u0043"],
  ["\uff24", "\u0044"],
  ["\uff25", "\u0045"],
  ["\uff26", "\u0046"],
  ["\uff27", "\u0047"],
  ["\uff28", "\u0048"],
  ["\uff29", "\u0049"],
  ["\uff2a", "\u004a"],
  ["\uff2b", "\u004b"],
  ["\uff2c", "\u004c"],
  ["\uff2d", "\u004d"],
  ["\uff2e", "\u004e"],
  ["\uff2f", "\u004f"],
  ["\uff30", "\u0050"],
  ["\uff31", "\u0051"],
  ["\uff32", "\u0052"],
  ["\uff33", "\u0053"],
  ["\uff34", "\u0054"],
  ["\uff35", "\u0055"],
  ["\uff36", "\u0056"],
  ["\uff37", "\u0057"],
  ["\uff38", "\u0058"],
  ["\uff39", "\u0059"],
  ["\uff3a", "\u005a"],
  ["\uff3b", "\u0028"],
  ["\uff3c", "\u005c"],
  ["\uff3d", "\u0029"],
  ["\uff41", "\u0041"],
  ["\uff42", "\u0042"],
  ["\uff43", "\u0043"],
  ["\uff44", "\u0044"],
  ["\uff45", "\u0045"],
  ["\uff46", "\u0046"],
  ["\uff47", "\u0047"],
  ["\uff48", "\u0048"],
  ["\uff49", "\u0049"],
  ["\uff4a", "\u004a"],
  ["\uff4b", "\u004b"],
  ["\uff4c", "\u004c"],
  ["\uff4d", "\u004d"],
  ["\uff4e", "\u004e"],
  ["\uff4f", "\u004f"],
  ["\uff50", "\u0050"],
  ["\uff51", "\u0051"],
  ["\uff52", "\u0052"],
  ["\uff53", "\u0053"],
  ["\uff54", "\u0054"],
  ["\uff55", "\u0055"],
  ["\uff56", "\u0056"],
  ["\uff57", "\u0057"],
  ["\uff58", "\u0058"],
  ["\uff59", "\u0059"],
  ["\uff5a", "\u005a"],
  ["\uff5b", "\u0028"],
  ["\uff5d", "\u0029"],
  ["\uffe5", "\u005c"],
]);

export function toZenginKana(str: string): string;
export function toZenginKana(str: null): null;
export function toZenginKana(str: undefined): undefined;
export function toZenginKana(value: string | null | undefined) {
  if (!value) {
    return value;
  }

  const array = [];
  let start = 0;
  for (let i = 0; i < value.length; i++) {
    const c = value.charAt(i);
    const m = M.get(c);
    if (m != null) {
      if (start < i) {
        array.push(value.substring(start, i));
      }
      array.push(m);
      start = i + 1;
    }
  }
  if (start < value.length) {
    array.push(value.substring(start));
  }
  return array.join("");
}