Cypress · Middle · Question 19 of 77

How do you add TypeScript types for a custom command `cy.login`?

1Declare it in the Cypress.Chainable interface
2Add it to tsconfig.json under commands
3Types for custom commands are generated automatically

Show the answer

Correct answer: Declare it in the Cypress.Chainable interface

Explanation

Extending namespace Cypress { interface Chainable { login(...): Chainable<void> } } gives autocompletion and type checks.

Further reading

Cypress: Custom Commands ↗

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