export declare const getArray: (arrayLength: number) => number[];
export declare function valueIsDefined<T>(value: T | null | undefined): value is T;
/** Like `valueIsDefined`, but also treats empty strings as absent. */
export declare function isNonEmptyValue(value: unknown): boolean;
export declare function wait<T = unknown>(time: number, value?: T): Promise<T | undefined>;
export declare function normalizePathSlashes(path: string): string;
export declare function saveToSessionStorage(key: string, value: unknown): void;
export declare function loadFromSessionStorage(key: string): unknown;
/**
 * Checks if a feature flag is enabled in localStorage.
 * The flag is considered enabled only if its value is exactly 'true'.
 * @param flagName - The name of the flag in localStorage
 * @returns true if the flag is set to 'true', false otherwise
 */
export declare function isLocalStorageFlagEnabled(flagName: string): boolean;