import { type BaseError, type BaseErrorOptions } from "./BaseError.js";
/**
 * Thrown when something is required but not supplied.
 * - Usually thrown from `requireX()` functions, e.g. `requireString()` and `requireNumber()`
 */
export declare class RequiredError extends Error implements BaseError {
    /** Provide additional named contextual data that is relevant to the `Error` instance. */
    readonly [key: string]: unknown;
    constructor(message?: string, options?: BaseErrorOptions);
}