import { ITeamsJsSdkError } from "./errors";
/**
 * @hidden
 * Used for useLiveState and useSharedState for checking if a value is a prevState callback
 */
export declare function isPrevStateCallback<TState>(value: any): value is (value: TState) => TState;
/**
 * @hidden
 */
export declare function isITeamsJsSdkError(value: any): value is ITeamsJsSdkError;
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