/**
 * Borrow from https://github.com/mapbox/tiny-sdf
 */
import { CanvasLike, GlobalRuntime } from '@antv/g-lite';
type TinySDFOptions = {
    canvas: CanvasLike;
    fontSize?: number;
    buffer?: number;
    radius?: number;
    cutoff?: number;
    fontFamily?: string;
    fontWeight?: string;
    fontStyle?: string;
};
export declare class TinySDF {
    private buffer;
    private radius;
    private cutoff;
    private size;
    private f;
    private z;
    private v;
    private gridOuter;
    private gridInner;
    private ctx;
    constructor(options: TinySDFOptions, runtime: GlobalRuntime);
    draw(char: string): {
        data: Uint8ClampedArray<ArrayBuffer>;
        width: number;
        height: number;
        glyphWidth: number;
        glyphHeight: number;
        glyphTop: number;
        glyphLeft: number;
        glyphAdvance: number;
    };
}
export {};
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