import { Fn } from '../Fn';
import { IfInvoking, Input } from '../utils';
export interface Flat<T extends unknown[]> extends Fn<T[], T[number][]> {
    out: IfInvoking<this, InvokeFlat<T, Input<this>>, T[number][]>;
}
export type InvokeFlat<T extends unknown[], In extends T[]> = Internal<T, In, [
]>;
type Internal<T extends unknown[], In extends T[], Acc extends T[number][]> = In extends [infer First extends T, ...infer Rest extends T[]] ? Internal<T, Rest, [...Acc, ...First]> : Acc;
export {};