import type Gtk from "gi://Gtk";
import type { PackType } from "../../../enums/gtk3-index";
import type { GjsElement } from "../../gjs-element";
import type { CaseCollectorCallback } from "../element-extenders/map-properties";
type ChildPropertyValue = string | number | boolean | undefined;
export type ChildPropertiesProps = {
    /**
     * Defines how the element is packed within it's parent. When set to
     * `END` elements are packed at the end of the parent in reversed
     * order (i.e. last child will be first one visible when looking
     * from left to right, or top to bottom).
     */
    "cpt:pack-type"?: PackType;
    /**
     * `cpt` stands for `child property`.
     *
     * `cpt:*` prefix is used to define Gtk's `child properties`, those
     * properties do not belong to the element itself, or it's parent,
     * but rather to the relation between them.
     *
     * A typical example of a child property is `pack-type` which is
     * used to define the packing location of a child inside it's
     * container.
     *
     * `cpt` props are not individually handled by the Element, rather
     * whatever string of characters you put after `cpt:` will be used
     * to define a child property, this means that it's possible to
     * define a child property with an incorrect name and not get any
     * errors.
     *
     * @example
     *   // Assuming you have the following element:
     *   <Box cpt:pack-type={Gtk.PackType.START} />
     *
     *   // This is what will happen behind the scenes:
     *   parentWidgetOfTheBox.child_set_property(
     *   boxWidget,
     *   "pack-type",
     *   Gtk.PackType.START
     *   );
     */
    [k: `cpt:${string}`]: ChildPropertyValue;
};
export declare const createChildPropsMapper: (getWidget: () => Gtk.Widget, getParent: () => undefined | null | GjsElement) => CaseCollectorCallback<any>;
export {};