import type { DrawInteractions } from "../common";
type Check<T> = (value: unknown) => value is T;
/**
 * Checks whether a value is a finite, non-negative number.
 *
 * @param value - The value to validate.
 * @returns True when the value is a number >= 0 and finite.
 */
export declare const isFiniteNonNegativeNumber: Check<number>;
/**
 * Checks whether a value is a boolean.
 *
 * @param value - The value to validate.
 * @returns True when the value is either true or false.
 */
export declare const isBoolean: Check<boolean>;
/**
 *  Checks whether a value is null.
 *
 * @param value - The value to validate.
 * @returns True when the value is null.
 */
export declare const isNull: Check<null>;
/**
 * Checks whether a value is a non-null object.
 *
 * @param value - The value to validate.
 * @returns True when the value is an object and not null.
 */
export declare const isNonNullObject: Check<Record<string, unknown>>;
/**
 * Checks whether a value is a function.
 *
 * @param value - The value to validate.
 * @returns True when the value is a callable function.
 */
export declare const isFunction: Check<Function>;
/**
 * Checks whether a value is a string with at least one character.
 *
 * @param value - The value to validate.
 * @returns True when the value is a non-empty string.
 */
export declare const isNonEmptyString: Check<string>;
/**
 * Checks whether a value is a supported draw interaction string.
 *
 * @param value - The value to validate.
 * @returns True when the value is one of the DrawInteractions literals.
 */
export declare const isDrawInteraction: Check<DrawInteractions>;
export {};