add global in jsdom as well

Author: SimenB

CHANGELOG.md

@@ -7,7 +7,7 @@
 ### Fixes
 
 - `[jest-runtime]` `require.main` is no longer `undefined` when using `jest.resetModules` ([#10626](https://github.com/facebook/jest/pull/10626))
-- `[jest-runtime]` Do not inject `global` variable into module wrapper ([#10644](https://github.com/facebook/jest/pull/10644))
+- `[jest-runtime]` [**BREAKING**] Do not inject `global` variable into module wrapper ([#10644](https://github.com/facebook/jest/pull/10644))
 - `[@jest/types]` Add missing values for `timers` ([#10632](https://github.com/facebook/jest/pull/10632))
 
 ### Chore & Maintenance

packages/jest-environment-jsdom/src/index.ts

@@ -45,6 +45,9 @@ class JSDOMEnvironment implements JestEnvironment {
       throw new Error('JSDOM did not return a Window object');
     }
 
+    // for "universal" code (code should use `globalThis`)
+    global.global = global;
+
     // In the `jsdom@16`, ArrayBuffer was not added to Window, ref: https://github.com/jsdom/jsdom/commit/3a4fd6258e6b13e9cf8341ddba60a06b9b5c7b5b
     // Install ArrayBuffer to Window to fix it. Make sure the test is passed, ref: https://github.com/facebook/jest/pull/7626
     global.ArrayBuffer = ArrayBuffer;