/** The game board (grid) background image. */
export declare const gridSvgUrl: string;
/**
 * The 14 train sprite images, indexed the same way as the original snake.js
 * spritesheet: 0/1 straight body segments, 2..5 corner pieces, 6..9 heads,
 * 10..13 tails.
 */
export declare const trainSvgUrls: readonly string[];
/** The 8 food sprite images. */
export declare const foodSvgUrls: readonly string[];