import { System } from '@lastolivegames/becsy';
import { ComputedTextMetrics, Text } from '../components';
export declare const fontWeightMap: {
    thin: number;
    extraLight: number;
    ultraLight: number;
    light: number;
    normal: number;
    regular: number;
    medium: number;
    semiBold: number;
    demiBold: number;
    bold: number;
    extraBold: number;
    ultraBold: number;
    black: number;
    heavy: number;
    extraBlack: number;
    ultraBlack: number;
};
/**
 * Generates a font style string to use for `TextMetrics.measureFont()`.
 * @param style
 * @returns Font style string, for passing to `TextMetrics.measureFont()`
 */
export declare function fontStringFromTextStyle(style: Partial<Text>): string;
export declare function yOffsetFromTextBaseline(textBaseline: CanvasTextBaseline, fontMetrics: Pick<globalThis.TextMetrics, 'fontBoundingBoxAscent' | 'fontBoundingBoxDescent' | 'hangingBaseline' | 'ideographicBaseline'>): number;
export declare class ComputeTextMetrics extends System {
    texts: import("@lastolivegames/becsy").Query;
    constructor();
    execute(): void;
}
export declare function measureText(style: Partial<Text>): Partial<ComputedTextMetrics>;
export declare function computeBidi(text: string): string;