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optionalProperty()

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

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): T[K] | undefined

Type Parameters​

K​

K extends string | number | symbol

Parameters​

prop​

K

Returns​

T[K] | undefined

Remarks​

pure function

Example​

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

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