Add MessageChannel, MessageEvent and MessagePort to globals

jestjs · Mar 6, 2022 · 967d140 · 967d140
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -20,6 +20,7 @@
 - `[jest-environment-node]` [**BREAKING**] Add default `node` and `node-addon` conditions to `exportConditions` for `node` environment ([#11924](https://github.com/facebook/jest/pull/11924))
 - `[jest-environment-node]` [**BREAKING**] Pass global config to Jest environment constructor for `node` environment ([#12461](https://github.com/facebook/jest/pull/12461))
 - `[jest-environment-node]` [**BREAKING**] Second argument `context` to constructor is mandatory ([#12469](https://github.com/facebook/jest/pull/12469))
+- `[jest-environment-node]` Add MessageChannel, MessageEvent and MessagePort to globals ([#](https://github.com/facebook/jest/pull/))
 - `[@jest/expect]` New module which extends `expect` with `jest-snapshot` matchers ([#12404](https://github.com/facebook/jest/pull/12404), [#12410](https://github.com/facebook/jest/pull/12410), [#12418](https://github.com/facebook/jest/pull/12418))
 - `[@jest/expect-utils]` New module exporting utils for `expect` ([#12323](https://github.com/facebook/jest/pull/12323))
 - `[jest-haste-map]` [**BREAKING**] `HasteMap.create` now returns a promise ([#12008](https://github.com/facebook/jest/pull/12008))

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;