type Config = Record<string, any>;
export declare function isObject(value: unknown): value is object;
export declare function isConfigObject(value: unknown): value is Config;
export declare function isEmptyConfigObject(value: unknown): value is Config;
export declare function isEmptyObject(value: unknown): value is {};
export declare function isFunction(value: unknown): value is Function;
export declare function isString(value: unknown): value is string;
export declare function isNumber(value: unknown): value is number;
export declare function isBoolean(value: unknown): value is boolean;
/**
 * Returns true if value is an array and has at least one element, otherwise false.
 */
export declare function isArray(value: unknown): value is [];
export declare function isUndefined(value: unknown): value is undefined;
export declare function isUndefinedOrNull(value: unknown): value is undefined | null;
export {};