/**
 * `cva` — forked from class-variance-authority (Apache-2.0, © Joe Bell), inlined
 * so `veryfront/chat` takes no external `class-variance-authority` dependency.
 *
 * The runtime is faithful to upstream; the types are narrowed to what the chat
 * UI primitives use. Private to the chat module — not a public export.
 *
 * @module react/components/ui/cva
 */
import { type ClassValue, clsx } from "../../../utils/clsx.js";
/** Re-export of the class joiner, matching upstream's `cx`. */
export declare const cx: typeof clsx;
type VariantShape = Record<string, Record<string, ClassValue>>;
type VariantSelection<V extends VariantShape> = {
    [K in keyof V]?: keyof V[K] | null | undefined;
};
type CvaProps<V extends VariantShape> = VariantSelection<V> & {
    class?: ClassValue;
    className?: ClassValue;
};
interface CvaConfig<V extends VariantShape> {
    variants?: V;
    compoundVariants?: Array<Partial<{
        [K in keyof V]: keyof V[K] | Array<keyof V[K]>;
    }> & {
        class?: ClassValue;
        className?: ClassValue;
    }>;
    defaultVariants?: VariantSelection<V>;
}
/** Extracts the variant props of a `cva` function, like upstream's helper. */
export type VariantProps<T extends (...args: any) => any> = Omit<NonNullable<Parameters<T>[0]>, "class" | "className">;
/** Build a class-name function from a base plus a variants config. */
export declare function cva<V extends VariantShape>(base?: ClassValue, config?: CvaConfig<V>): (props?: CvaProps<V>) => string;
export {};
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