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Contents
/**
Extracts the type of the last element of an array.
Use-case: Defining the return type of functions that extract the last element of an array, for example [`lodash.last`](https://lodash.com/docs/4.17.15#last).
@example
```
import type {LastArrayElement} from 'type-fest';
declare function lastOf<V extends readonly any[]>(array: V): LastArrayElement<V>;
const array = ['foo', 2];
typeof lastOf(array);
//=> number
```
@category Array
@category Template literal
*/
export type LastArrayElement<ValueType extends readonly unknown[]> =
ValueType extends readonly [infer ElementType]
? ElementType
: ValueType extends readonly [infer _, ...infer Tail]
? LastArrayElement<Tail>
: ValueType extends ReadonlyArray<infer ElementType>
? ElementType
: never;
Version data entries
24 entries across 24 versions & 1 rubygems