export declare function isAppContext(ctx: unknown): ctx is AppContext;
export declare class AppContext {
    private readonly ctx;
    static is(ctx: unknown): ctx is AppContext;
    static merge(...ctxs: (AppContext | undefined | Record<string, unknown>)[]): AppContext;
    set<T>(key: string, value: T): AppContext;
    get<T>(key: string): T | undefined;
    getOrDefault<T>(key: string, defaultValue: T): T;
    getOrThrow<T>(key: string): T;
    delete(key: string): void;
    asObj(): Record<string, unknown>;
}
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