import type { PluginHookContributions } from "../../types/hook";
type EventHook = NonNullable<PluginHookContributions["event"]>;
type ForegroundFallbackReason = "rate-limit";
type ForegroundFallbackDependencies = {
    defaultFallbackChain?: string[];
    getCurrentModel?: (sessionID: string) => string | undefined;
    getAvailableModels?: (sessionID: string) => Set<string>;
    setCurrentModel?: (sessionID: string, model: string) => void | Promise<void>;
    onFallbackApplied?: (input: {
        sessionID: string;
        previousModel: string;
        nextModel: string;
        reason: ForegroundFallbackReason;
    }) => void | Promise<void>;
    onRetryRequested?: (input: {
        sessionID: string;
        model: string;
    }) => void | Promise<void>;
    now?: () => number;
};
export declare function createForegroundFallbackHandler(deps?: ForegroundFallbackDependencies): EventHook;
export {};