// first case
export function normalizeParams<P>(params: P): P {
  return Object.entries(params).reduce((acc, [key, value]) => {
    value = typeof value === 'string' ? value.trim() : value;
    if (value) {
      acc[key as keyof P] = value;
    }
    return acc;
  }, {} as P);
}

// second case
export type Keys<T> = { [Key in keyof T]: Key };

export const toKeys = <T>(source: T): Keys<T> =>
  Object.keys(source).reduce((acc, k) => {
    const key = k as keyof T;
    acc[key] = key;
    return acc;
  }, {} as Keys<T>);