import { ISlotType } from './litegraph';
/**
 * Uses the standard String() function to coerce to string, unless the value is null or undefined - then null.
 * @param value The value to convert
 * @returns String(value) or null
 */
export declare function stringOrNull(value: unknown): string | null;
/**
 * Uses the standard String() function to coerce to string, unless the value is null or undefined - then an empty string
 * @param value The value to convert
 * @returns String(value) or ""
 */
export declare function stringOrEmpty(value: unknown): string;
export declare function parseSlotTypes(type: ISlotType): string[];
/**
 * Creates a unique name by appending an underscore and a number to the end of the name
 * if it already exists.
 * @param name The name to make unique
 * @param existingNames The names that already exist. Default: an empty array
 * @returns The name, or a unique name if it already exists.
 */
export declare function nextUniqueName(name: string, existingNames?: string[]): string;