/// <reference types="jquery" />
import * as Mithril from 'mithril';
export interface ComponentAttrs extends Mithril.Attributes {
}
/**
 * The `Component` class defines a user interface 'building block'. A component
 * generates a virtual DOM to be rendered on each redraw.
 *
 * Essentially, this is a wrapper for Mithril's components that adds several useful features:
 *
 *  - In the `oninit` and `onbeforeupdate` lifecycle hooks, we store vnode attrs in `this.attrs.
 *    This allows us to use attrs across components without having to pass the vnode to every single
 *    method.
 *  - The static `initAttrs` method allows a convenient way to provide defaults (or to otherwise modify)
 *    the attrs that have been passed into a component.
 *  - When the component is created in the DOM, we store its DOM element under `this.element`; this lets
 *    us use jQuery to modify child DOM state from internal methods via the `this.$()` method.
 *  - A convenience `component` method, which serves as an alternative to hyperscript and JSX.
 *
 * As with other Mithril components, components extending Component can be initialized
 * and nested using JSX, hyperscript, or a combination of both. The `component` method can also
 * be used.
 *
 * @example
 * return m('div', <MyComponent foo="bar"><p>Hello World</p></MyComponent>);
 *
 * @example
 * return m('div', MyComponent.component({foo: 'bar'), m('p', 'Hello World!'));
 *
 * @see https://mithril.js.org/components.html
 */
export default abstract class Component<T extends ComponentAttrs = ComponentAttrs> implements Mithril.ClassComponent<T> {
    /**
     * The root DOM element for the component.
     */
    protected element: Element;
    /**
     * The attributes passed into the component.
     *
     * @see https://mithril.js.org/components.html#passing-data-to-components
     */
    protected attrs: T;
    /**
     * @inheritdoc
     */
    abstract view(vnode: Mithril.Vnode<T, this>): Mithril.Children;
    /**
     * @inheritdoc
     */
    oninit(vnode: Mithril.Vnode<T, this>): void;
    /**
     * @inheritdoc
     */
    oncreate(vnode: Mithril.VnodeDOM<T, this>): void;
    /**
     * @inheritdoc
     */
    onbeforeupdate(vnode: Mithril.VnodeDOM<T, this>): void;
    /**
     * Returns a jQuery object for this component's element. If you pass in a
     * selector string, this method will return a jQuery object, using the current
     * element as its buffer.
     *
     * For example, calling `component.$('li')` will return a jQuery object
     * containing all of the `li` elements inside the DOM element of this
     * component.
     *
     * @param {String} [selector] a jQuery-compatible selector string
     * @returns {jQuery} the jQuery object for the DOM node
     * @final
     */
    protected $(selector: any): JQuery<any>;
    /**
     * Convenience method to attach a component without JSX.
     * Has the same effect as calling `m(THIS_CLASS, attrs, children)`.
     *
     * @see https://mithril.js.org/hyperscript.html#mselector,-attributes,-children
     */
    static component(attrs?: {}, children?: any): Mithril.Vnode;
    /**
     * Saves a reference to the vnode attrs after running them through initAttrs,
     * and checking for common issues.
     */
    private setAttrs;
    /**
     * Initialize the component's attrs.
     *
     * This can be used to assign default values for missing, optional attrs.
     */
    protected static initAttrs<T>(attrs: T): void;
}