import { Context, Schema, Service, Element } from 'koishi';
export declare const name = "ocr";
export interface Config {
    timeout?: number;
    exePath?: string;
    cwd?: string;
    args?: string[];
    debug?: boolean;
}
export declare const Config: Schema<Config>;
declare module 'koishi' {
    interface Context {
        ocr: Ocr;
    }
}
declare class Ocr extends Service {
    config: Config;
    static [Service.provide]: string;
    static inject: string[];
    private ocr;
    private pid;
    private initialized;
    private ocrInitComplete;
    constructor(ctx: Context, config: Config);
    start(): Promise<void>;
    stop(): Promise<void>;
    isReady(): boolean;
    /**
     * 将Element元素转换为统一的base64格式
     */
    private getImageBase64;
    private fetchImageFromUrl;
    recognizeText(imageElement: Element): Promise<string>;
}
export declare function apply(ctx: Context, config: Config): void;
export {};