Variable: NO_ENTRY

const NO_ENTRY: unique symbol

Defined in: reducers.d.ts:448

A unique value representing the lack of an entry for some key in a KeyedReducer or AsyncKeyedReducer.

Keyed reducers use this instead of null or undefined because they are valid values. Furthermore, introducing a has method for the purpose of disambiguation would be less performant due to the need to perform the lookup twice when the entry exists: has followed by get for the same key.

Since

v2.0.0