indexed-collection/src/core/ICollectionChangeDetail.ts

A zero-dependency library of classes that make filtering, sorting and observing changes to arrays easier and more efficient.

export interface ICollectionUpdateLineItem<T> {
  oldValue: T;
  newValue: T;
}

export interface ICollectionChangeDetail<T> {
  readonly added: T[];
  readonly removed: T[];
  readonly updated: ICollectionUpdateLineItem<T>[];
}