import { NormalizedPath, Path } from './types';

/**
 * Normalizes a path by turning it into an Array of strings.
 * Removes empty parts of the path and ignores redundant whitespace or
 * slashes. Each path element is also capitalized.
 *
 * @param path Array or string path to normalize.
 * @return Array of path segments.
 */
export default function normalizePath(path: Path): NormalizedPath {
  const split = Array.isArray(path) ? path : path.match(/(\w+)/g);
  return !split
    ? []
    : split.map((element) => {
        if (/^\d+$/.test(element)) {
          return parseInt(element, 10);
        }
        return element.charAt(0).toUpperCase() + element.slice(1);
      });
}