@types/chai 4.2.22

The @types/chai is an npm package that provides TypeScript definitions for Chai, a BDD and TDD assertion framework for node.js. This package is a part of DefinitelyTyped project which hosts TypeScript definitions for various JavaScript libraries. By integrating these definitions into your project, you can leverage TypeScript's static typing for better code quality and readability while using Chai.

Using @types/chai is straightforward. First, you must install it as a development dependency in your project using the command npm install --save-dev @types/chai. Once installed, you can import chai in your TypeScript file and the typings will automatically apply:

import * as chai from 'chai';

let expect = chai.expect;
let should = chai.should();

let foo = 'bar';

expect(foo).to.be.a('string');
foo.should.be.a('string');

Please note that you must have TypeScript and Chai also installed in your project for @types/chai to work correctly.

The documentation for @types/chai is implicitly contained in the TypeScript definition files within the package. In addition to that, It doesn't have standalone documentation. To understand the type definitions, it's beneficial to refer to the Chai documentation along with the DefinitelyTyped Github repository. The GitHub repository will also provide information on the DefinitelyTyped project and guidelines for use.