---
title: "12.0.0"
url: "https://www.cypress.io/releases/12-0-0"
description: "Summary: The Session and Origin Experiment is now generally available for end-to-end testing. This means Cypress now fully supports: Testing multiple origins…"
---

# 12.0.0

ReleasedReleased on December 5, 2022

**Summary:**

The Session and Origin Experiment is now generally available for end-to-end testing. This means Cypress now fully supports:

-   Testing multiple origins in a single test with the new [`cy.origin()`](/api/commands/origin) command.
    
-   Caching and restoring cookies, [`localStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage), and [`sessionStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) between tests
    
-   Configuring [`testIsolation`](/app/core-concepts/writing-and-organizing-tests#Test-Isolation) in suites to define whether or not the browser context is cleaned or persisted between tests
    

Additionally in this release, enhancements were made to how Cypress manages DOM element resolution to reduce the likelihood of hitting detached DOM errors due to maintaining stale DOM references. We've updated our [Retry-ability Guide](/app/core-concepts/retry-ability) with all the details if you'd like to learn more.

Read more about 12.0 in [our blog post](https://on.cypress.io/cypress-12-release).

**Breaking Changes:**

-   Cypress dropped support for Node.js 12, 15 and 17. Those versions have reached end-of-life. Installing Cypress on your system now requires Node.js 14, 16 or 18+. Addressed in [#24885](https://github.com/cypress-io/cypress/pull/24885).
    
-   Cypress has always recommended writing tests in a clean context. In Cypress 12, we enforce running tests in a clean browser context through [test isolation](/app/core-concepts/writing-and-organizing-tests#Test-Isolation). This option is configurable, but is enabled by default. Whether enabled or disabled, this changes how Cypress cleans up the browser context before each test and you may experience test errors with this upgrade. To better understand the full impact of this change, please review the [migration guide](/app/references/migration-guide#Test-Isolation).
    
    -   In Cypress v12, the `testIsolation` configuration values have changed from `on` or `off` to `true` or `false`. Addressed in [#24935](https://github.com/cypress-io/cypress/pull/24935).
        
-   The `experimentalSessionAndOrigin` configuration option has been removed and all functionality associated with this experiment is now enabled by default, with the exception of using `require` and `import` with callback supplied to the [`cy.origin()`](/api/commands/origin) command. To leverage external dependencies in `cy.origin()` callbacks, set the new [`e2e.experimentalOriginDependencies`](/app/references/experiments#End-to-End-Testing) configuration option to `true`. Addresses [#21471](https://github.com/cypress-io/cypress/issues/21471).
    
-   The `Cookies.defaults` and `Cookies.preserveOnce` APIs have been removed. Use the new [`cy.session()`](/api/commands/session) command to preserve cookies between tests. Addresses [#21472](https://github.com/cypress-io/cypress/issues/21472).
    
-   The `cy.server()` and `cy.route()` commands have been removed. Additionally, the corresponding `Cypress.Server.defaults` API has also been removed. Use the \[`cy.intercept()`(/api/commands/intercept) command to stub network responses and requests. Addresses [#22126](https://github.com/cypress-io/cypress/issues/22126).
    
-   The Cookie commands now uses the `hostname` as the domain by default instead of the `superdomain`. This change aligns Cypress' cookie rules with the browser cookie rules. This may affect what cookies are returned by [`cy.getCookie()`](/api/commands/getcookie), what cookies are set with [`cy.setCookie()`](/api/commands/setcookie), and the cookies cleared with [`cy.clearCookies()`](/api/commands/clearcookies). Addresses [#363](https://github.com/cypress-io/cypress/issues/363), [#5723](https://github.com/cypress-io/cypress/issues/5723) and [#24526](https://github.com/cypress-io/cypress/issues/24526).
    
-   The [`.within()`](/api/commands/within) command now requires a single subject and throws an error if given more than one subject. This change adds consistency around how `.within()` behaves across commands. Previously some commands inside a `.within()` callback would silently select the first element, while others would use all of the previously yielded subjects, and others would throw an error. Addressed in [#24975](https://github.com/cypress-io/cypress/pull/24975).
    
-   Cypress now throws an error if any Cypress commands are invoked from inside a [`.should()`](/api/commands/should) callback. This previously resulted in unusual and undefined behavior. Addresses [#5963](https://github.com/cypress-io/cypress/issues/5963), [#14656](https://github.com/cypress-io/cypress/issues/14656) and [#22587](https://github.com/cypress-io/cypress/issues/22587).
    
-   The [`.invoke()`](/api/commands/invoke) command now throws an error if the invoked function returns a promise. If you wish to call a method that returns a promise and wait for it to resolve, use [`.then()`](/api/commands/then) instead of `.invoke()`. Addressed in [#24417](https://github.com/cypress-io/cypress/pull/24417).
    
-   The [`cy.request()`](/api/commands/request) command now uses [`querystringify`](https://www.npmjs.com/package/querystringify) to stringify & parse the `qs` options. This change aligns with how the [`cy.visit()`](/api/commands/visit) command generates urls with query parameters. Addressed in [#20302](https://github.com/cypress-io/cypress/pull/20302).
    

**Features:**

-   Added a new configuration option called `testIsolation`, which defaults to `true`. This option can be set at the `e2e` or suite-level to determine whether or not [test isolation](/app/core-concepts/writing-and-organizing-tests#Test-Isolation) is enabled to ensure a clean browser context between tests. Addressed in [#22230](https://github.com/cypress-io/cypress/pull/22230).
    
-   The previously experimental Cypress command, [`cy.origin()`](/api/commands/origin), is now generally available in end-to-end testing. This command allows testing multiple origins in a single test. Addresses [#17336](https://github.com/cypress-io/cypress/issues/17336).
    
-   The previously experimental Cypress command, [`cy.session()`](/api/commands/session), is now generally available. This command caches and restores `cookies`, [`localStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage), and [`sessionStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) in order to recreate a consistent browser context between tests. Addresses [#20977](https://github.com/cypress-io/cypress/issues/20977).
    
-   Added a new Cypress command, [`cy.getAllLocalStorage()`](/api/commands/getalllocalstorage), to get [`localStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) data for all origins with which the test has interacted. Addresses [#24276](https://github.com/cypress-io/cypress/issues/24276).
    
-   Added a new Cypress command, [`cy.clearAllLocalStorage()`](/api/commands/clearalllocalstorage), to clear [`localStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) data for all origins with which the test has interacted. Addresses [#24276](https://github.com/cypress-io/cypress/issues/24276).
    
-   Added a new Cypress command, [`cy.getAllSessionStorage()`](/api/commands/getallsessionstorage), to get [`sessionStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage) data for all origins with which the test has interacted. Addresses [#24276](https://github.com/cypress-io/cypress/issues/24276).
    
-   Added a new Cypress command, [`cy.clearAllSessionStorage()`](/api/commands/clearallsessionstorage), to clear [`sessionStorage`](https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage) data for all origins with which the test has interacted. Addresses [#24276](https://github.com/cypress-io/cypress/issues/24276).
    
-   Added a new configuration option called [`experimentalOriginDependencies`](/app/references/experiments#End-to-End-Testing), which defaults to `false`. This option enables support for `require` and `import` within the callback supplied to the [`cy.origin()`](/api/commands/origin) command in end-to-end testing. Previously this feature was enabled through the `experimentalSessionAndOrigin` configuration option. `experimentalOriginDependencies` was added as a configuration option in Cypress 12, instead of being enabled by default, due to increased Node.js memory usage associated with this option that needs to be addressed before making this behavior generally available. See issue [#24976](https://github.com/cypress-io/cypress/issues/24976) for more information. Addressed in [#24931](https://github.com/cypress-io/cypress/pull/24931).
    
-   Added a new `Cypress.ensure` API which provides several methods that can be helpful when writing customs commands. Addressed in [#24697](https://github.com/cypress-io/cypress/pull/24697).
    
-   Added a new "Run All" button to the [`experimentalRunAllSpecs`](/app/references/experiments#End-to-End-Testing) experiment which enables running all spec files returned from the `specPattern` glob or an array of globs, regardless of the specs sharing a root folder. Addresses [#24759](https://github.com/cypress-io/cypress/issues/24759).
    
-   Further improved bundling in the binary to reduce startup and unzip time. Addressed in [#24909](https://github.com/cypress-io/cypress/pull/24909)
    

**Bugfixes:**

-   Fixed a regression in [10.11.0](#10-11-0) where the Launchpad no longer showed a loading spinner on startup to indicate that it had successfully started and was in a loading state. Fixed [#24950](https://github.com/cypress-io/cypress/issues/24950).
    
-   Fixed the "Create Spec from Component" capability to correctly scaffold the component spec from a component which contains special characters in its name. Before this change, a spec was scaffolded with either the wrong spec name or the incorrect component import which led to invalid JS errors. Fixes [#23492](https://github.com/cypress-io/cypress/issues/23492).
    
-   Corrected Cypress environment variable resolution to correctly resolve environment variables set with `npm config set`. Fixes [#24556](https://github.com/cypress-io/cypress/issues/24556).
    
-   When [`experimentalRunAllSpecs=true`](/app/references/experiments#End-to-End-Testing), the "Run N specs" directory-level buttons in the Inline Specs List now function correctly when activated by the keyboard. Fixes [#24762](https://github.com/cypress-io/cypress/pull/24762).
    
-   Fixed unexpected behaviors when verifying a cookie was not returned from [`cy.getCookie()`](/api/commands/getcookie). Now it's possible to explicitly assert the cookie did not exist with `cy.getCookie('foo1').should('not.exist')`. Previously users had to verify cookies properties did not exist with `.its('value').should('equal', null)`. Addressed in [#24203](https://github.com/cypress-io/cypress/pull/24203).
    
-   Fixed the console output returned from clicking on an aliased intercept in the Command Log. It now logs the yielded request/response object associated to the intercepted call when clicked, where previously it did not log these details. Fixed in [#24623](https://github.com/cypress-io/cypress/pull/24623).