import type { CRTOptions } from "./options";
/**
 * A style bag keyed by CSS property (camelCase) or CSS custom property (`--x`).
 * Every wrapper consumes this: React casts it to CSSProperties, Vue passes it
 * to `h(..., { style })`, and the Web Component serializes it to a style string.
 */
export type CRTStyle = Record<string, string | number>;
/** Overlay layers rendered as sibling divs after the content. */
export type OverlayClass = "crt-curvature" | "crt-noise" | "crt-glare" | "crt-edge-glow" | "crt-vignette";
export interface CRTComputed {
    /** When false, wrappers should render the raw content with no effect at all. */
    enabled: boolean;
    wrapper: {
        className: string;
        style: CRTStyle;
    };
    inner: {
        className: string;
        style?: CRTStyle;
    };
    overlays: OverlayClass[];
}
/**
 * Turn a set of CRT options into the class names, inline styles, and overlay
 * list that every framework wrapper renders. This is the single source of
 * truth for how the effect maps onto markup.
 */
export declare function computeCrt(options?: CRTOptions): CRTComputed;