import { type IDisposable, type Scene } from "@babylonjs/core/scene.js";
import { type BMFontChar } from "./sdf/bmFont.js";
import { type SdfFont } from "./sdf/font.js";
import { Texture } from "@babylonjs/core/Materials/Textures/texture.js";
/**
 * Class representing a font asset for SDF (Signed Distance Field) rendering.
 */
export declare class FontAsset implements IDisposable {
    private readonly _chars;
    private readonly _charsRegex;
    private readonly _kernings;
    /** @internal */
    readonly _font: SdfFont;
    /**
     * Gets the font scale value
     */
    readonly scale: number;
    /**
     * Gets the list of used textures
     */
    readonly textures: Texture[];
    /**
     * Creates a new FontAsset instance.
     * @param definitionData defines the font data in JSON format.
     * @param textureUrl defines the url of the texture to use for the font.
     * @param scene defines the hosting scene.
     */
    constructor(definitionData: string, textureUrl: string, scene?: Scene);
    dispose(): void;
    private _updateFallbacks;
    /** @internal */
    _getChar(charCode: number): BMFontChar;
    /** @internal */
    _getKerning(first: number, second: number): number;
    /** @internal */
    _unsupportedChars(text: string): string;
}