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// Case Style enumexport enum caseStyle {  // eg : LastName  pascalCase = "pascalCase",  // eg : lastName  camelCase = "camelCase",  // eg : last_name  snakeCase = "snakeCase",  // eg : last-name  kebabCase = "kebabCase",  // eg : LAST_NAME  screamingSnakeCase = "screamingSnakeCase",  // eg : LAST-NAME  screamingKebabCase = "screamingKebabCase"}
const validators = {  pascalCase: /[A-Z][a-z0-9]+(?:[A-Z][a-z0-9]+)*/,  camelCase: /[a-z][a-z0-9]+(?:[A-Z][a-z0-9]+)*/,  snakeCase: /[a-z][a-z0-9]+(?:[_][a-z][a-z0-9]+)*/,  screamingSnakeCase: /[A-Z][A-Z0-9]+(?:[_][A-Z][A-Z0-9]+)*/,  kebabCase: /[a-z][a-z0-9]+(?:[-][a-z][a-z0-9]+)*/,  screamingKebabCase: /[A-Z][A-Z0-9]+(?:[-][A-Z][A-Z0-9]+)*/};
/** * Validate the string into the caseStyle wanted * @param str String to validate * @param caseStyle caseStyle to validate the string into */export function validate(str: string, style: caseStyle): boolean {  const m = validators[style].exec(str);  return m && m[0] === str;}
/** * Format the string into the caseStyle wanted * @param str String to format * @param caseStyle caseStyle to format the string into * TODO (zekth): handle diacritics */export function format(str: string, style: caseStyle): string {  const acc = [];  const reg = /([a-zA-Z0-9À-ž]+)/gm;  str = str.trim().toLowerCase();  const m = str.match(reg);  switch (style) {    case caseStyle.pascalCase:    case caseStyle.camelCase:      for (let i = 0; i < m.length; i++) {        if (          style === caseStyle.pascalCase ||          (style === caseStyle.camelCase && i !== 0)        ) {          acc.push(m[i][0].toUpperCase() + m[i].slice(1));        } else {          acc.push(m[i]);        }      }      return acc.join("");    case caseStyle.snakeCase:      return m.join("_");    case caseStyle.kebabCase:      return m.join("-");    case caseStyle.screamingSnakeCase:      return m.join("_").toUpperCase();    case caseStyle.screamingKebabCase:      return m.join("-").toUpperCase();    default:      throw Error("Unknown case style");  }}