@plone/types/src/utils.d.ts

Plone's Types Package

/**
 * Get the type of the elements in an array
 */
export type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;

export type RequireAtLeastOne<T, Keys extends keyof T = keyof T> = Pick<
  T,
  Exclude<keyof T, Keys>
> &
  {
    [K in Keys]-?: Required<Pick<T, K>> & Partial<Pick<T, Exclude<Keys, K>>>;
  }[Keys];