/// <reference types="react" />
import { WebView } from 'react-native-webview';
import Bus from './Bus';
export declare const WEBVIEW_TARGET = "@@WEBVIEW_TARGET";
export declare const constructors: Record<string, any>;
export declare const ID: () => string;
export interface Instance {
    postMessage: (...args: any[]) => void;
    [WEBVIEW_TARGET]?: string;
    [key: string]: any;
}
export interface WebviewConstructor {
    new (...args: any[]): Instance;
    constructLocally?: (...args: unknown[]) => Instance;
}
export interface WebviewMessage {
    type: 'set' | 'exec' | 'listen' | 'event' | 'construct';
    payload: {
        target?: string | {
            [key: string]: any;
        };
        key?: string;
        value?: any;
        method?: string;
        args?: any[];
        types?: string[];
        type?: string;
        constructor?: string | Function;
        id?: string;
    };
}
export interface CanvasInstance {
    webview: WebView | null;
    bus: Bus | null;
    context2D: CanvasRenderingContext2D;
    getContext: (contextType: string) => CanvasRenderingContext2D | null;
    createImage: (width?: number, height?: number) => any;
    postMessage: (message: WebviewMessage) => Promise<any>;
    listeners: Array<(payload: any) => void>;
    addMessageListener: (listener: (payload: any) => void) => () => void;
    removeMessageListener: (listener: (payload: any) => void) => void;
    createImageData: (dataArray: number[], width?: number, height?: number) => any;
}
export declare const registerWebviewTarget: (instance: Instance, targetName: string) => void;
export declare const registerWebviewProperties: (instance: Instance, properties: Record<string, any>) => void;
export declare const registerWebviewMethods: (instance: Instance, methods: string[]) => void;
export declare const registerWebviewConstructor: (constructor: WebviewConstructor, constructorName: string) => void;
export declare const useWebviewBinding: ({ targetName, properties, methods }: {
    targetName: string;
    properties?: Record<string, any> | undefined;
    methods?: string[] | undefined;
}) => import("react").MutableRefObject<{}>;