Function: filterNullAndUndefinedAndZero()
filterNullAndUndefinedAndZero<
TValue>(value:0|Nullish|TValue):value is TValue
Checks whether a value is not null nor undefined nor 0.
This can be used in Array.filter to remove null, undefined from the array type
Type Parameters
| Type Parameter |
|---|
TValue |
Parameters
| Parameter | Type | Description |
|---|---|---|
value | 0 | Nullish | TValue | The value to verify that is neither null, undefined nor 0 |
Returns
value is TValue
A boolean that is true if the value is neither null, undefined nor 0, false otherwise.
Example
// TypeScript Type: (string | number | undefined | null)[]
const someArray = ['one', 'two', undefined, null, 0, 1];
// TypeScript Type: (string | number)[]
const filteredArray = someArray.filter(filterNullAndUndefinedAndZero);
// Result: ['one', 'two', 1]