/**
 * Weavetab — tools/canvas.ts
 * browser_canvas: Extract canvas image data as base64 or dispatch raw stroke/drawing events.
 * Supports ref resolution via action map cache and CDP DOM APIs.
 * Weavetab by fy2ne
 */
import CDP from "chrome-remote-interface";
import type { Config } from "../config/loader.js";
export interface CanvasOptions {
    action: "get_image" | "draw";
    selector?: string;
    id?: string;
    label?: string;
    ref?: string;
    backendNodeId?: number;
    points?: {
        x: number;
        y: number;
    }[];
}
export declare function browserCanvas(session: CDP.Client, options: CanvasOptions, _config: Config): Promise<{
    success: boolean;
    dataUrl?: string;
    message: string;
}>;