/// <reference types="chai" resolution-mode="require"/>
export declare const expect: Chai.ExpectStatic;
export declare function testStep<ReturnValue>(title: string | ((result: {
    type: 'fail';
    error: Error;
} | {
    type: 'pass';
}) => string), get: (() => ReturnValue) | (() => Promise<ReturnValue>)): Promise<ReturnValue>;
