import type { LiveComponent, LiveElement } from '@use-gpu/live';
import type { RustTextAPI, Font } from '@use-gpu/glyph';
export declare const FontContext: import("@use-gpu/live").LiveContext<RustTextAPI>;
export declare const useFontContext: () => RustTextAPI;
export type FontProviderProps = {
    fonts: Font[];
    children?: LiveElement;
};
export declare const FontProvider: LiveComponent<FontProviderProps>;
export declare const useFontFamily: (family?: string, weight?: string | number, style?: string) => number[];
export declare const useFontText: (stack: number[], strings: string[] | string, size: number) => {
    spans: import("@use-gpu/core").Tuples<3, number>;
    glyphs: import("@use-gpu/core").Tuples<4, number>;
    breaks: Uint32Array<ArrayBufferLike>;
};
export declare const useFontHeight: (stack: number[], size: number, lineHeight?: number) => {
    ascent: number;
    descent: number;
    lineHeight: number;
    xHeight: number;
    emUnit: number;
};
export declare const useFontDebug: () => void;