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/** * via: https://github.com/blakeembrey/lower-case */
import { LanguageSpecific } from "./types.ts";
/** * Special language-specific overrides. * Source: ftp://ftp.unicode.org/Public/UCD/latest/ucd/SpecialCasing.txt */const LANGUAGES: LanguageSpecific = {  tr: {    regexp: /\u0130|\u0049|\u0049\u0307/g,    map: {      İ: "\u0069",      I: "\u0131",      İ: "\u0069",    },  },  az: {    regexp: /[\u0130]/g,    map: {      İ: "\u0069",      I: "\u0131",      İ: "\u0069",    },  },  lt: {    regexp: /[\u0049\u004A\u012E\u00CC\u00CD\u0128]/g,    map: {      I: "\u0069\u0307",      J: "\u006A\u0307",      Į: "\u012F\u0307",      Ì: "\u0069\u0307\u0300",      Í: "\u0069\u0307\u0301",      Ĩ: "\u0069\u0307\u0303",    },  },};
/** * Lowercase a string. * * @param  {String} str * @return {String} */export default function (str: string, locale?: string): string {  str = str == null ? "" : String(str);
  if (!locale) {    return str.toLowerCase();  }
  const lang = LANGUAGES[locale];
  if (lang) {    str = str.replace(lang.regexp, (m: string): string => lang.map[m]);  }
  return str.toLowerCase();}