optionalProperty()

optionalProperty<T>(obj?): <K>(prop) => undefined | T[K]

Gets the optional value of prop in obj. Array index support.

Type Parameters

T

T extends object

The type of the input object.

Parameters

obj?

T

The object to get the value from.

Returns

<K>(prop): undefined | T[K]

Type Parameters

K

K extends string | number | symbol

Parameters

prop

K

Returns

undefined | T[K]

Remarks

pure function

Example

optionalProperty(personStore)('address');
// personStore?.address

optionalProperty(userStore.profile)(0);
// userStore?.profile?.at(0)