import { Color as ColorType, ContrastAlgorithmType } from '../../types.js';
import { INodeDefinition, Node } from '../../programmatic/node.js';
import { ToInput } from "../../programmatic/input.js";
import { ToOutput } from "../../programmatic/output.js";
import Color from 'colorjs.io';
export declare const contrastCheck: (foreground: Color, background: Color, algorithm: any) => number;
export default class NodeDefinition extends Node {
    static title: string;
    static type: string;
    static description: string;
    inputs: ToInput<{
        foreground: ColorType;
        background: ColorType;
        algorithm: ContrastAlgorithmType;
        threshold: number;
        precision: number;
    }>;
    outputs: ToOutput<{
        color: ColorType;
        alpha: number;
        contrast: number;
    }>;
    constructor(props: INodeDefinition);
    execute(): void | Promise<void>;
}
//# sourceMappingURL=contrastingAlpha.d.ts.map