import { assert } from 'chai'; const name = 'John Doe'; assert.isString(name); // Assertion passes
import { assert } from 'chai'; function validateEmail(email: string): boolean { const emailRegex = /\S+@\S+\.\S+/; return emailRegex.test(email); } const email = 'john.doe@example.com'; assert.isString(email); assert.isTrue(validateEmail(email)); // Assertion passes
npm install chai @types/chai --save-devIn the above command, the '@types/chai' package is used to provide the TypeScript typings for the Chai library.