export declare function toMultiLineString(lines: Array<string>): string;
export declare function toMultiLineArray(text: string): Array<string>;
export declare function isUndefined(obj: unknown): obj is undefined;
export declare function isString(text: unknown): text is string;
export declare function isStringEmpty(text: unknown): boolean;
export declare function stateGenerator(length?: number): string;
export declare function toString(value: unknown): string | undefined;
export declare function stringifySafe(obj: unknown, indent?: number): string;
export declare function ensureString(value: unknown): string | null | undefined;