/**
 * de Casteljau's algorithm for drawing and splitting bezier curves.
 * Inspired by https://pomax.github.io/bezierinfo/
 *
 * @param {Number[][]} points Array of [x,y] points: [start, control1, control2, ..., end]
 *   The original segment to split.
 * @param {Number} t Where to split the curve (value between [0, 1])
 * @return {Object} An object { left, right } where left is the segment from 0..t and
 *   right is the segment from t..1.
 */
export declare function decasteljau(points: number[][], t: number): {
    left: number[][];
    right: number[][];
};