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KeyValueDiffer

interface

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

diff()

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

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

Parameters
object Map<K, V>

containing the new value.
Returns

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

Parameters
object object

containing the new value.
Returns

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

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https://v14.angular.io/api/core/KeyValueDiffer