interface
Record representing the item change information.
interface KeyValueChangeRecord<K, V> { key: K currentValue: V | null previousValue: V | null }
Property | Description |
---|---|
key: K | Read-Only Current key in the Map. |
currentValue: V | null | Read-Only Current value for the key or |
previousValue: V | null | Read-Only Previous value for the key or |
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https://v12.angular.io/api/core/KeyValueChangeRecord