Function arrayEquals

packages/core/src/util/array_utils.ts:19–33

(a: T[], b: T[], identityAccessor?: (value: T) => unknown)

 *     the array.
 */
export function arrayEquals<T>(a: T[], b: T[], identityAccessor?: (value: T) => unknown): boolean {
  if (a.length !== b.length) return false;
  for (let i = 0; i < a.length; i++) {
    let valueA = a[i];
    let valueB = b[i];
    if (identityAccessor) {
      valueA = identityAccessor(valueA) as any;
      valueB = identityAccessor(valueB) as any;
    }
    if (valueB !== valueA) {
      return false;
    }
  }
  return true;
}

/**
 * Flattens an array.