import { type ReactNode } from "react";
/**
 * Extensible map of supported components → their props.
 * @salt-ds/core must augment this with the components that support the API,
 * using the same key string that the component passes to useClassNameInjection,
 * e.g., "saltButton": ButtonProps.
 */
export interface ComponentPropsMap {
}
type SupportedComponent = keyof ComponentPropsMap extends never ? "ComponentPropsMap must be augmented to define the components that support useClassNameInjection" : keyof ComponentPropsMap;
export type ClassNameInjector<Props, Keys extends keyof Props> = (props: Pick<Props, Keys>) => string | undefined;
interface ClassNameInjectorEntry {
    fn: (props: unknown) => string | undefined;
    keys: string[];
}
export type ClassNameInjectionRegistry<ComponentName extends SupportedComponent = SupportedComponent> = Map<ComponentName, ClassNameInjectorEntry[]>;
export type ClassNameInjectionProviderProps = {
    children: ReactNode;
    value?: ClassNameInjectionRegistry;
};
export declare function ClassNameInjectionProvider({ children, value, }: ClassNameInjectionProviderProps): import("react/jsx-runtime").JSX.Element;
type PropsWithClassName = {
    className?: string;
} & Record<string, any>;
/**
 * Return the className created by the registry and a props object with injector keys stripped.
 * Only components declared in ComponentPropsMap can call this at compile time.
 */
export declare function useClassNameInjection<Props extends PropsWithClassName>(component: SupportedComponent, props: Props): {
    className: string | undefined;
    props: Omit<Props, "className">;
};
/**
 * Register a class injector for a supported component name.
 * - Keys must be valid string keys for that component’s props (as declared in ComponentPropsMap).
 * - Injector receives only the declared keys (Pick<PropsOf<C>, Keys>).
 */
export declare function registerClassInjector<Props extends Record<string, any>, Keys extends Extract<keyof Props, string>>(registry: ClassNameInjectionRegistry, component: SupportedComponent, keys: Keys[], injector: ClassNameInjector<Props, Keys>): void;
export {};