import type { Credit, DataSource } from "../data-door.ts";
import { type SourceBook, type SourceBookOptions } from "./book.ts";
/** What an element tells its host about the last drawn frame. */
export interface DoorFrame {
    /** The package's own credits, with how many marks each gave (`ownCredit`). */
    own(): readonly Credit[];
    /** How many marks or tiles each of the book's sources gave, by id. */
    used(): ReadonlyMap<string, number>;
}
export interface DoorHost {
    readonly book: SourceBook;
    /** The sources set by a page, in the order added. */
    sources(): readonly DataSource[];
    /** Replaces every source: all are checked first, and if one is refused nothing changes and the `TypeError` is thrown. */
    setSources(list: readonly unknown[]): void;
    /** The credits of the last drawn frame, the package's own first. */
    credits(): Credit[];
    /** Fires `chikyu-creditschange` when the set of credited sources changed since the last call (not at each draw). */
    announce(): void;
}
/**
 * Makes the door of one element.
 *
 * @param target - The element: it gets `chikyu-creditschange`.
 * @param frame - What the last drawn frame held.
 * @param options - The kinds of source the element draws.
 * @param redraw - Asked for when a source was added, removed or switched, or its records were read.
 * @returns The host.
 */
export declare function createDoorHost(target: EventTarget, frame: DoorFrame, options: SourceBookOptions, redraw: () => void): DoorHost;