import type { TextNode, TypedNode, Node, NodeInput, RichTextNode, StringNode } from './types.js';
export declare function isText(toTest: Node | null | undefined): toTest is TextNode;
export declare function isTypedNode(toTest: Node | null | undefined): toTest is TypedNode;
export declare function isRichTextNode(toTest: any): toTest is RichTextNode;
export declare function isStringNode(toTest: any): toTest is StringNode;
export declare function isNonEmptyString(toTest: any): toTest is string;
export declare function processNodeInput(input: NodeInput | null | undefined): RichTextNode | StringNode | undefined;
export declare function getRandomId(scope?: string): string;
/**
 * Test if the provided value is a valid output of the XHTML field-type within
 * Optimizely CMS
 *
 * @param       toTest
 * @returns
 */
export declare function isNodeInput(toTest: any): toTest is NodeInput;