Replace camelCaseString with dashed-string

hyphenize.ts

/**
 * @example
 *   ```ts
 *   hyphenize("someCamelCaseString");
 *    //=> "some-camel-case-string"
 *
 *   hyphenize("ABigHouse");
 *    //=> "a-big-house"
 *   ```
 */
export function hyphenize(str: string): string {
  const chars = str.match(/[A-Z]/g);
  if (!chars) return str;
  
  let ret = str;
  for (const val of chars) {
    ret = ret.replace(val, "-" + val.toLowerCase());
  }
  
  if (ret.startsWith("-")) {
    return ret.slice(1, ret.length);
  }
  
  return ret;
};