Add MessageChannel, MessageEvent and MessagePort to globals

jestjs · Mar 6, 2022 · b425d8d · b425d8d
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -53,6 +53,7 @@
 - `[jest-each]` `%#` is not replaced with index of the test case ([#12517](https://github.com/facebook/jest/pull/12517))
 - `[jest-environment-jsdom]` Make `jsdom` accessible to extending environments again ([#12232](https://github.com/facebook/jest/pull/12232))
 - `[jest-environment-jsdom]` Log JSDOM errors more cleanly ([#12386](https://github.com/facebook/jest/pull/12386))
+- `[jest-environment-node]` Add MessageChannel, MessageEvent and MessagePort to globals ([#12553](https://github.com/facebook/jest/pull/12553))
 - `[@jest/expect-utils]` [**BREAKING**] Fix false positives when looking for `undefined` prop ([#8923](https://github.com/facebook/jest/pull/8923))
 - `[jest-haste-map]` Don't use partial results if file crawl errors ([#12420](https://github.com/facebook/jest/pull/12420))
 - `[jest-jasmine2, jest-types]` [**BREAKING**] Move all `jasmine` specific types from `@jest/types` to its own package ([#12125](https://github.com/facebook/jest/pull/12125))

diff --git a/packages/jest-environment-node/src/index.ts b/packages/jest-environment-node/src/index.ts
@@ -78,6 +78,18 @@ export default class NodeEnvironment implements JestEnvironment<Timer> {
     if (typeof EventTarget !== 'undefined') {
       global.EventTarget = EventTarget;
     }
+    // MessageChannel is global in Node >= 15
+    if (typeof MessageChannel !== 'undefined') {
+      global.MessageChannel = MessageChannel;
+    }
+    // MessageEvent is global in Node >= 15
+    if (typeof MessageEvent !== 'undefined') {
+      global.MessageEvent = MessageEvent;
+    }
+    // MessagePort is global in Node >= 15
+    if (typeof MessagePort !== 'undefined') {
+      global.MessagePort = MessagePort;
+    }
     // performance is global in Node >= 16
     if (typeof performance !== 'undefined') {
       global.performance = performance;