is
The is() method checks whether a value is an array (type guard).
Interactive example
Syntax
typescript
function is<
GenericInput extends unknown
>(
input: GenericInput
): input is GenericInput extends any[] ? GenericInput : neverParameters
input: The value to test.
Return value
true if the value is an array, false otherwise. Narrows the type to an array when true.
See also
from- Creates an array from an iterable