import type { ReadOnlyIterable, Strigifiable } from "@lou.codes/types";
/**
 * Takes a `separator` string and a iterable and returns a string with the
 * concatenation of all the elements separated by the `separator`.
 *
 * @category Reducers
 * @example
 * ```typescript
 * const joinWithSpaces = join(" ");
 * joinWithSpaces([1, 2, 3]); // "1 2 3"
 * ```
 * @param separator String to use as separator.
 * @returns Curried function with `separator` in context.
 */
export declare const join: <const Separator extends string>(
	separator: Separator,
) => <Item extends Strigifiable>(
	iterable: ReadOnlyIterable<Item>,
) => `${string}${Separator}${string}`;