/// <reference types="node" />
export declare class TextEngine {
    private _spritePath;
    private _spriteSheet;
    private _spriteSheetCharacters;
    private _ready;
    private _defaultSpriteSheet;
    constructor(spritePath?: string | Buffer);
    loadSprites(): Promise<void>;
    rasterize(input: string): Promise<string[]>;
    private pixelsFromSpritesheet;
    private generateUnspritedCharacter;
    private pixelsFromImage;
    private ensureReady;
}