import { Base } from '@blinkk/selective-edit/dist/mixins';
import { EditorState } from '../editor/state';
export interface ProjectTypeState {
}
declare const BaseProjectTypeState_base: {
    new (...args: any[]): {
        _listeners?: Record<string, ((...args: any) => void)[]> | undefined;
        addListener(eventName: string, callback: (...args: any) => void): void;
        readonly listeners: Record<string, ((...args: any) => void)[]>;
        triggerListener(eventName: string, ...args: any): void;
    };
} & typeof Base;
export declare class BaseProjectTypeState extends BaseProjectTypeState_base implements ProjectTypeState {
    editorState: EditorState;
    /**
     * Keep track of active promises to keep from requesting the same data
     * multiple times.
     */
    protected promises: Record<string, Promise<any>>;
    constructor(editorState: EditorState);
    /**
     * Determines if there is an existing promise for a given key.
     *
     * @param key Key identifying the promise or loading status.
     */
    inProgress(key: string): boolean;
    /**
     * Signal for the editor to re-render.
     */
    render(): void;
}
export {};