import { Element } from "./element";
export declare class Attribute<V> {
    readonly name: string;
    private readonly parser;
    private current;
    onChange: ((newValue: V | null, prevValue: V | null) => void) | null;
    onSet: (() => void) | null;
    constructor(name: string, parser: (v: string | null) => V);
    get(): V | null;
    setInternal(v: V | null): void;
    set(v: V | null): void;
    isEqualTo(v: V | null): boolean;
    isEqualToRaw(v: string | null): boolean;
    syncDown(element: Element): void;
    syncUp(element: Element): void;
}
export declare class AttributeController {
    private readonly element;
    private readonly attributes;
    constructor(element: Element);
    registerAttribute(attribute: Attribute<any>): void;
    getAttribute(name: string): Attribute<any> | undefined;
    detectedPossibleChange(mutation: MutationRecord): void;
    syncUpAll(): void;
}