export interface Context {
    set(key: string, value: any): void;
    get(key: string): any;
}
export interface Action {
    type: string;
    payload: any;
    id: string;
    meta: {
        received_at: string;
        [x: string]: any;
    };
}
export declare type ActionHandler = (ctx: Context, action: Action) => Promise<unknown>;
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