import type { UIColorConfig } from "../../miscellaneous/color/UIColor.Internal";
import type { UIProgressMaskFunction } from "../../miscellaneous/mask-function/UIProgressMaskFunction";
import type { UIElementOptions } from "../UIElement/UIElement.Internal";
/** Configuration options for UIProgress */
export interface UIProgressOptions extends UIElementOptions {
    /** Multiplicative tint */
    color: UIColorConfig;
    /** Function controlling fill direction and shape */
    maskFunction: UIProgressMaskFunction;
    /** Progress from 0 (empty) to 1 (full) */
    progress: number;
}
export declare const PROGRESS_DEFAULT_VALUE = 1;
export declare function simplifyGLSLSource(source: string): string;