rivo/Str/Repeat.d.ts

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import type { Args, Fn } from "../HKT";
import type { Nat } from "../Num";
import type { Dec } from "../Num/Int/Dec";
import type { AssertStr } from "../helpers";

export type Repeat<N extends Nat, S extends string> = AssertStr<
  Nat extends N ? string
  : N extends 0 ? ""
  : // @ts-ignore - Type instantiation is excessively deep and possibly infinite.
    `${S}${Repeat<Dec<N>, S>}`
>;

export default interface RepeatFn extends Fn<[Nat, string], string> {
  def: ([n, s]: Args<this>) => Repeat<typeof n, typeof s>;
}