NgRx Entity

• Part of NgRx

• Converts arrays to dictionaries

• Supports relationships between stores

• Super fast find by id

• Entity enrichment

  • Loading, error, etc

• Selectors to transform data back to arrays

Entity State

interface EntityState<V> {
  ids: string[] | number[];
  entities: { [id: string | id: number]: V };
}

Reducers

Selectors

• Memoized

• Composable

• Testable

Refactor Tour of Heroes NgRx project to use entity: https://stackblitz.com/github/jessesanders/tour-of-heroes/tree/ngrx