Function nonNullAssign

src/util/object-utils.ts:27–33

(target: T, source: S)

// Like Object.assign but ignore null or undefined properties.
export function nonNullAssign<T extends object, S extends object>(target: T, source: S): T {
  for (const key in source) {
    if (Object.prototype.hasOwnProperty.call(source, key) && source[key] != null)
      target[key as unknown as keyof T] = source[key] as unknown as T[keyof T];
  }
  return target;
}

// Return true if |obj| is not an object or it has no properties.
export function isEmptyObject(obj: object) {