Cypress Tips/Tricks - Typing Custom Commands

index.d.ts

declare namespace Cypress {
  interface Chainable<Subject> {
    // Typing out all of our custom commands i.e. cy.login(...)
    
    /**
     * Logging in to a user directly through the API
     * It returns the auth token in the .then on success
     * @example
     * cy.login('username', 'password123')
     */
    login(username: string, password: string): Chainable<string>;
  }
}