type Provider = () => string | Error;
/**
 * Wrapper around Node assert that allows for lazy evaluation of the error and,
 * more importantly, a custom Error class.
 * @param value
 * @param message
 */
export declare function assert(value: unknown, message: string | Error | Provider): asserts value;
export { fail, strictEqual, notStrictEqual, AssertionError } from 'assert';