Correct window type

Previously this would type error:

```ts
cy.window().then(window => window.eval('1'));
```

cli/types/cypress.d.ts

@@ -2001,7 +2001,7 @@ declare namespace Cypress {
     })
     ```
      */
-    window(options?: Partial<Loggable & Timeoutable>): Chainable<Window>
+    window(options?: Partial<Loggable & Timeoutable>): Chainable<Window & typeof globalThis>
 
     /**
      * Scopes all subsequent cy commands to within this element.

cli/types/index.d.ts

@@ -1,33 +1,33 @@
-// Project: https://www.cypress.io
-// GitHub:  https://github.com/cypress-io/cypress
-// Definitions by: Gert Hengeveld <https://github.com/ghengeveld>
-//                 Mike Woudenberg <https://github.com/mikewoudenberg>
-//                 Robbert van Markus <https://github.com/rvanmarkus>
-//                 Nicholas Boll <https://github.com/nicholasboll>
-// TypeScript Version: 3.0
-// Updated by the Cypress team: https://www.cypress.io/about/
-
-/// <reference path="./cy-blob-util.d.ts" />
-/// <reference path="./cy-bluebird.d.ts" />
-/// <reference path="./cy-moment.d.ts" />
-/// <reference path="./cy-minimatch.d.ts" />
-/// <reference path="./cy-chai.d.ts" />
-/// <reference path="./lodash/index.d.ts" />
-/// <reference path="./sinon/index.d.ts" />
-/// <reference path="./sinon-chai/index.d.ts" />
-/// <reference path="./mocha/index.d.ts" />
-/// <reference path="./jquery/index.d.ts" />
-/// <reference path="./chai-jquery/index.d.ts" />
-
-// jQuery includes dependency "sizzle" that provides types
-// so we include it too in "node_modules/sizzle".
-// This way jQuery can load it using 'reference types="sizzle"' directive
-
-// load ambient declaration for "cypress" NPM module
-// hmm, how to load it better?
-/// <reference path="./cypress-npm-api.d.ts" />
-
-/// <reference path="./cypress.d.ts" />
-/// <reference path="./cypress-global-vars.d.ts" />
-/// <reference path="./cypress-type-helpers.d.ts" />
-/// <reference path="./cypress-expect.d.ts" />
+// Project: https://www.cypress.io
+// GitHub:  https://github.com/cypress-io/cypress
+// Definitions by: Gert Hengeveld <https://github.com/ghengeveld>
+//                 Mike Woudenberg <https://github.com/mikewoudenberg>
+//                 Robbert van Markus <https://github.com/rvanmarkus>
+//                 Nicholas Boll <https://github.com/nicholasboll>
+// TypeScript Version: 3.0
+// Updated by the Cypress team: https://www.cypress.io/about/
+
+/// <reference path="./cy-blob-util.d.ts" />
+/// <reference path="./cy-bluebird.d.ts" />
+/// <reference path="./cy-moment.d.ts" />
+/// <reference path="./cy-minimatch.d.ts" />
+/// <reference path="./cy-chai.d.ts" />
+/// <reference path="./lodash/index.d.ts" />
+/// <reference path="./sinon/index.d.ts" />
+/// <reference path="./sinon-chai/index.d.ts" />
+/// <reference path="./mocha/index.d.ts" />
+/// <reference path="./jquery/index.d.ts" />
+/// <reference path="./chai-jquery/index.d.ts" />
+
+// jQuery includes dependency "sizzle" that provides types
+// so we include it too in "node_modules/sizzle".
+// This way jQuery can load it using 'reference types="sizzle"' directive
+
+// load ambient declaration for "cypress" NPM module
+// hmm, how to load it better?
+/// <reference path="./cypress-npm-api.d.ts" />
+
+/// <reference path="./cypress.d.ts" />
+/// <reference path="./cypress-global-vars.d.ts" />
+/// <reference path="./cypress-type-helpers.d.ts" />
+/// <reference path="./cypress-expect.d.ts" />