KeyValueDiffer

interface

Contents

A differ that tracks changes made to an object over time.

      
      interface KeyValueDiffer<K, V> {
  diff(object: Map<K, V>): KeyValueChanges<K, V> | null
}

Methods

Compute a difference between the previous state and the new object state.

      
      diff(object: Map<K, V>): KeyValueChanges<K, V> | null

object

Map<K, V>

containing the new value.

KeyValueChanges<K, V> | null: an object describing the difference. The return value is only valid until the next diff() invocation.

      
      diff(object: { [key: string]: V; }): KeyValueChanges<string, V> | null

object

containing the new value.

KeyValueChanges<string, V> | null: an object describing the difference. The return value is only valid until the next diff() invocation.