import { type ResolvablePromise } from '@arcmantle/library/async';
import type { CSSStyle } from '../shared/css.ts';
import { DisposingEventHost } from './auto-disposing-event-host.ts';
type PropertyType = StringConstructor | ObjectConstructor | NumberConstructor | BooleanConstructor;
export declare class SignalElement extends DisposingEventHost {
    static tagName: string;
    static register(tagName?: string): void;
    static registerNow(tagName?: string): void;
    static get observedAttributes(): string[];
    protected static elementStyles: CSSStyleSheet[];
    protected static defineStyles(): void;
    constructor();
    readonly updateComplete: ResolvablePromise<boolean>;
    readonly hasConnected: boolean;
    readonly hasUpdated: boolean;
    private get __metadata();
    private __unsubEffect?;
    private __changedProps;
    private __previousProps;
    attributeChangedCallback(name: string, _oldValue: string, newValue: string): void;
    protected connected(): void;
    protected disconnected(): void;
    /** Runs the immediately after connectedCallback, the first time this component connects. */
    protected firstConnected(): void;
    /** Runs after render has completed and dom has been painted after a connectedCallback. */
    protected afterConnected(): void;
    /** Runs immediately before render is performed. */
    protected beforeUpdate(changedProps: Set<string | symbol>): void;
    /** Runs after render has completed and dom has painted. */
    protected afterUpdate(changedProps: Set<string | symbol>): void;
    requestUpdate(): Promise<boolean>;
    performUpdate(): void;
    /** Return a value which will be rendered into the components shadowroot. */
    protected render(): unknown;
    static styles: CSSStyle;
}
export declare const state: () => <C extends SignalElement, V>(target: ClassAccessorDecoratorTarget<C, V>, context: ClassAccessorDecoratorContext<C, V>) => ClassAccessorDecoratorResult<C, V>;
export declare const property: (type?: PropertyType) => <C extends SignalElement, V>(target: ClassAccessorDecoratorTarget<C, V>, context: ClassAccessorDecoratorContext<C, V>) => ClassAccessorDecoratorResult<C, V>;
export {};
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