Type alias InitialAndLast<Input>
Initial
And
Last
<Input>: Input extends readonly [...(infer Initial
), infer Last
] ? readonly [Initial, Last] : Input extends EmptyArray | EmptyString ? readonly [Input, undefined] : Input extends `${infer Initial
}${infer Rest
}` ? readonly [`${Rest extends EmptyString ? EmptyString : Initial}${InitialAndLast<Rest>[0]}`, `${Rest extends EmptyString ? Initial : InitialAndLast<Rest>[1]}`] : readonly [Input, Input[number] | undefined]Type Parameters
-
Input extends ArrayLike<unknown>
Get a couple with the initial and last values of an array or string.
Example