export interface ClassDescriptor {
    kind: 'class';
    elements: ClassElement[];
    finisher?: <T>(classDef: Constructor<T>) => undefined | Constructor<T>;
}
export interface ClassElement {
    kind: 'field' | 'method';
    key: PropertyKey;
    placement: 'static' | 'prototype' | 'own';
    initializer?: any;
    extras?: ClassElement[];
    finisher?: <T>(classDef: Constructor<T>) => undefined | Constructor<T>;
    descriptor?: PropertyDescriptor;
}
export declare type Constructor<T> = {
    new (...args: any[]): T;
};
export declare const classStandardDecorator: (value: any, descriptor: ClassDescriptor, fn: (value: any, classDef: Constructor<HTMLElement>) => any) => {
    kind: "class";
    elements: ClassElement[];
    finisher(classDef: Constructor<HTMLElement>): void;
};
export declare const classLegacyDecorator: (value: any, classDef: Constructor<HTMLElement>, fn: (value: any, classDef: Constructor<HTMLElement>) => any) => any;