export function number(key: string, dflt = 0): number {
  const stVal = localStorage.getItem(key);
  if (stVal === null) {
    return dflt;
  }
  const val = parseInt(stVal);
  if (isNaN(val)) {
    return dflt;
  }
  return val;
}

export function boolean(key: string, dflt = false): boolean {
  return localStorage.getItem(key) === 'true';
}
export function string(key: string, dflt = ''): string {
  return localStorage.getItem(key) || '';
}
