export type ProxyHandlerEntry = {
    provider: string;
    handlerPath: string;
};
export type ProxyServerLike = {
    listen: () => Promise<number>;
    close?: () => Promise<void>;
};
export type ActivitySpec = {
    topic: string;
    action: string;
    actor?: string;
    impact?: string;
    cause?: {
        kind: string;
        surface?: string;
        detail?: string;
    };
    subject?: unknown;
    details?: unknown;
};
export type StartLoaderProxyOptions<TProfile = unknown> = {
    createProxyServer: (opts: {
        configDir: string;
        profile: TProfile;
        port: number;
        log: (message: string) => void;
        resolveHandler: (providerName: string) => Promise<unknown>;
        notify?: (message: string, level?: string) => void;
        emitActivity?: (spec: ActivitySpec) => void;
    }) => ProxyServerLike;
    makeDynamicResolver: (listProviders: () => ProxyHandlerEntry[]) => (providerName: string) => Promise<unknown>;
    profile: TProfile;
    configDir: string;
    port: number;
    log?: (message: string) => void;
    reposDir?: string;
    notify?: (message: string, level?: string) => void;
    emitActivity?: (spec: ActivitySpec) => void;
};
export type StartedLoaderProxy = {
    server: ProxyServerLike;
    configDir: string;
    reposDir: string;
    log: (message: string) => void;
};
export declare function startLoaderProxy<TProfile = unknown>(options: StartLoaderProxyOptions<TProfile>): Promise<StartedLoaderProxy>;