isUndefined()function
isUndefined(value: unknown): value is undefined
| Param | Type | |
|---|---|---|
value | unknown | The value to test. required |
| Return | |
|---|---|
value is undefined | true if the value is undefined, otherwise false. |
Is a value undefined?
isUndefined(value: unknown): value is undefined
| Param | Type | |
|---|---|---|
value | unknown | The value to test. required |
| Return | |
|---|---|
value is undefined | true if the value is undefined, otherwise false. |
Is a value undefined?