export declare class ObservableState {
    private state;
    constructor();
    putValue(name: string, value: any): ObservableState;
    valueOf<T = any>(name: string): T;
    valueOfOrDefault<T>(name: string, defaultValue: T): T;
    hasValue(name: string): boolean;
    size(): number;
    keys(): string[];
    clear(): void;
    snapshot(): Record<string, any>;
}
export interface ObservableStateProvider {
    observableState(): Promise<ObservableState>;
}
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