export interface Context<T, Initial = void> {
    init: (initialValue: Initial) => T | Promise<T>;
    teardown?: (context: T) => void | Promise<void>;
}
export type ExtractContextTypes<C> = C extends Context<infer T, infer I> ? {
    value: T;
    init: I;
} : never;
export type ContextValues<T extends Record<string, Context<any>>> = {
    [K in keyof T]: ExtractContextTypes<T[K]>['value'];
};
export declare function contextMap<T extends Record<string, Context<any>>>(base?: T): ContextMap<ContextValues<T>>;
export interface ContextMap<T> extends Context<T> {
    thenSet<S, N extends string>(name: N, generator: (dependencies: T) => Context<S, void>): ContextMap<T & Record<N, S>>;
}
export declare function use<T, S>(context: Context<T>, dependentContext: Context<S, T>): Context<S>;
export declare function teardownBehaviorContexts(): Promise<void>;
export declare function behaviorContext<T>(context: Context<T>): Context<T>;